求关于八年级上册的数学题目+（答案） 求解答，8年级上册的数学题
\u4eba\u6559\u7248\u516b\u5e74\u7ea7\u4e0a\u518c\u6570\u5b66\u7ecf\u5178\u8bd5\u9898\u56de\u7b54\u5373\u53ef\u5f972\u5206\u7ecf\u9a8c\u503c\uff0c\u56de\u7b54\u88ab\u91c7\u7eb31) 3-(a-5)>3a-4 (a<3)
2) -6\u5206\u4e4b5x+31\u53c83\u5206\u4e4b1)
3\uff093-4[1-3(2-x)] \u5927\u4e8e\u7b49\u4e8e 59 (x\u5c0f\u4e8e\u7b49\u4e8e-3)
4\uff096\uff081-3\u5206\u4e4b1x\uff09\u5927\u4e8e\u7b49\u4e8e 2+5\u5206\u4e4b1\uff0810\u2014\u201415x\uff09 (x\u5927\u4e8e\u7b49\u4e8e-2)
5\uff096\u5206\u4e4b7x-13>3\u5206\u4e4b3x-8 (x>-3)
6\uff094x-10-4)
7) x-2-2\u5206\u4e4b2-x>3\u5206\u4e4bx-2 (x>2)
8) x-6\u5206\u4e4b2-x-3\u5206\u4e4b4x-3 \u5927\u4e8e\u7b49\u4e8e0 \uff08x\u5c0f\u4e8e\u7b49\u4e8e4\uff09
9\uff093\u5206\u4e4bx-2\u5206\u4e4bx-1<1
10)2(5-3x)>3(4x+2)
11)1-2\u5206\u4e4b1x>2
12\uff097x-2(x-3)<16
13)3(2x-1)<4(x-1)
14)2-6(x-5)\u5927\u4e8e\u7b49\u4e8e4(3-2x)
15)7+3x<5+4x
16)5-x(x+3)>2-x(x-1)
17)x-2(x+2\u5206\u4e4b1)\u5c0f\u4e8e\u7b49\u4e8e1-3\uff081-x\uff09
18)3(x-1)+2(1-3x)<5
19)3\u5206\u4e4b1x-1<x-3\u5206\u4e4b1
20\uff096\uff081-3\u5206\u4e4b2x\uff09<2+5\u5206\u4e4b1\uff0810-15x\uff09
\u62ec\u53f7\u4e3a\u7b54\u6848
1\u30015\7x+2\3<x+12\21
2\u30014\uff08x 2\uff09\uff1e2\uff083x + 5\uff09
3\u3001\u4ee5\u77e5\u5173\u4e8ex,y\u7684\u65b9\u7a0b\u7ec43x+y=k+1,x+3y=3 \uff0c\u82e50<x+y<1,\u6c42\u6574\u6570k\u7684\u503c.
4\u3001\u5f532(a-3)x-a\u7684\u89e3\u96c6\u3002
5\u3001\u4e24\u4f4d\u8001\u5e08\u51c6\u5907\u5e26\u9886\u7740\u82e5\u5e72\u540d\u5b66\u751f\u5916\u51fa\u65c5\u6e38\uff0c\u7532\u4e59\u4e24\u5bb6\u65c5\u884c\u793e\u62a5\u4ef7\u90fd\u662f100\u5143/\u4eba\uff0c\u4e14\u90fd\u8868\u793a\u63d0\u4f9b\u4f18\u60e0\uff1a\u7532\u65c5\u884c\u793e\u5bf9\u8001\u5e08\u548c\u5b66\u751f\u4e00\u5f8b\u4e03\u6298\uff0c\u4e59\u65c5\u884c\u793e\u5bf9\u8001\u5e08\u5168\u4ef7\uff0c\u5b66\u751f5\u6298\u6536\u8d39\uff0c\u9009\u62e9\u54ea\u5bb6\u65c5\u884c\u793e\u5408\u7b97
6\u3001m\u4e3a\u4f55\u503c\u65f6,\u65b9\u7a0b\u7ec4( 6x+2y=2m+1 4x+3y=11-m)\u7684\u89e3x\u3001y\u90fd\u662f\u6b63\u6570
7\u3001K\u53d6\u4f55\u503c\u65f6\uff0c\u5173\u4e8eX\u7684\u65b9\u7a0b3x-3k=5\uff08x+k\uff09+2\u7684\u89e3\u662f\u6b63\u6570\uff1f
8\u30013x > 2x+1
9\u3001 -2x+3 >-3x+1
10\u3001 3x\uff0d2\uff08x+1\uff09>0
11\u3001\u5df2\u77e5\u5173\u4e8ex\u7684\u65b9\u7a0b3k\uff0d5x\uff1d\uff0d9\u7684\u89e3\u662f\u975e\u8d1f\u6570\uff0c\u6c42k\u7684\u53d6\u503c\u8303\u56f4
12\u3001\u67d0\u5730\u6c14\u8c61\u8d44\u6599\u8868\u660e,\u5c71\u4e0b\u7684\u5e73\u5747\u6c14\u6e29\u4e3a22\u6444\u9002\u5ea6,\u4ece\u5c71\u811a\u4e0b\u8d77,\u6bcf\u5347\u9ad81000\u7c73,\u6c14\u6e29\u5c31\u4e0b\u964d6\u6444\u9002\u5ea6,\u8981\u5728\u5c71\u4e0a\u79cd\u4e00\u79cd\u5e73\u5747\u6c14\u6e29\u662f18\u81f320\u6444\u9002\u5ea6\u4e0b\u751f\u957f\u7684\u690d\u7269,\u90a3\u4e48\u690d\u7269\u5e94\u79cd\u5728\u5c71\u811a\u4e0b\u76841.\u5df2\u77e5\u5173\u4e8eX\u7684\u4e0d\u7b49\u5f0f\u7ec4\uff1aX-A\u22650 \u7684\u6574\u6570\u89e3\u5171\u67095\u4e2a\uff0c\u5219A\u7684\u53d6\u503c\u8303\u56f4\u662f
3-2X\uff1e-1 \uff08 \uff09.
2.\u82e5\u4e0d\u7b49\u5f0f\u7ec42X-A\uff1c1 \u7684\u89e3\u96c6\u4e3a-1\uff1cX\uff1c1\uff0c\u90a3\u4e48\uff08A+1\uff09\uff08B-1\uff09\u7684\u503c\u7b49\u4e8e
X-2B\uff1e3 \uff08 \uff09.
3.\u5f53A\uff1e0\uff0cB\uff1e0\u65f6\uff0c\u4e0d\u7b49\u5f0f\u7ec4 X\uff1cA \u7684\u89e3\u96c6\u4e3aX\uff1c-B\uff08 \uff09.
2\uff0e\u8bbea\uff0cb\uff0cc\u4e3a\u5b9e\u6570\uff0c\u4e14\uff5ca\uff5c+a=0\uff0c\uff5cab\uff5c=ab\uff0c\uff5cc\uff5c-c=0\uff0c\u6c42\u4ee3\u6570\u5f0f\uff5cb\uff5c-\uff5ca\uff0bb\uff5c-\uff5cc-b\uff5c\uff0b\uff5ca-c\uff5c\u7684\u503c\uff0e
3\uff0e\u82e5m\uff1c0\uff0cn\uff1e0\uff0c\uff5cm\uff5c\uff1c\uff5cn\uff5c\uff0c\u4e14\uff5cx\uff0bm\uff5c\uff0b\uff5cx-n\uff5c=m\uff0bn\uff0c \u6c42x\u7684\u53d6\u503c\u8303\u56f4\uff0e
4\uff0e\u8bbe(3x-1)7=a7x7\uff0ba6x6+\u2026+a1x\uff0ba0\uff0c\u8bd5\u6c42a0+a2\uff0ba4\uff0ba6\u7684\u503c\uff0e
5\uff0e\u5df2\u77e5\u65b9\u7a0b\u7ec4
\u6709\u89e3\uff0c\u6c42k\u7684\u503c\uff0e
6\uff0e\u89e3\u65b9\u7a0b2\uff5cx+1\uff5c+\uff5cx-3\uff5c=6\uff0e
7\uff0e\u89e3\u65b9\u7a0b\u7ec4
8\uff0e\u89e3\u4e0d\u7b49\u5f0f\uff5c\uff5cx\uff0b3\uff5c-\uff5cx-1\uff5c\uff5c\uff1e2\uff0e
9\uff0e\u6bd4\u8f83\u4e0b\u9762\u4e24\u4e2a\u6570\u7684\u5927\u5c0f\uff1a
10\uff0ex\uff0cy\uff0cz\u5747\u662f\u975e\u8d1f\u5b9e\u6570\uff0c\u4e14\u6ee1\u8db3\uff1a
x\uff0b3y\uff0b2z=3\uff0c3x\uff0b3y+z=4\uff0c
\u6c42u=3x-2y\uff0b4z\u7684\u6700\u5927\u503c\u4e0e\u6700\u5c0f\u503c\uff0e
11\uff0e\u6c42x4-2x3\uff0bx2+2x-1\u9664\u4ee5x2+x\uff0b1\u7684\u5546\u5f0f\u548c\u4f59\u5f0f\uff0e
12\uff0e\u5982\u56fe1\uff0d88\u6240\u793a\uff0e\u5c0f\u67f1\u4f4f\u5728\u7532\u6751\uff0c\u5976\u5976\u4f4f\u5728\u4e59\u6751\uff0c\u661f\u671f\u65e5\u5c0f\u67f1\u53bb\u770b\u671b\u5976\u5976\uff0c\u5148\u5728\u5317\u5c71\u5761\u6253\u4e00\u6346\u8349\uff0c\u53c8\u5728\u5357\u5c71\u5761\u780d\u4e00\u6346\u67f4\u7ed9\u5976\u5976\u9001\u53bb\uff0e\u8bf7\u95ee\uff1a\u5c0f\u67f1\u5e94\u8be5\u9009\u62e9\u600e\u6837\u7684\u8def\u7ebf\u624d\u80fd\u4f7f\u8def\u7a0b\u6700\u77ed\uff1f
13\uff0e\u5982\u56fe1\uff0d89\u6240\u793a\uff0eAOB\u662f\u4e00\u6761\u76f4\u7ebf\uff0cOC\uff0cOE\u5206\u522b\u662f\u2220AOD\u548c\u2220DOB\u7684\u5e73\u5206\u7ebf\uff0c\u2220COD=55\u00b0\uff0e\u6c42\u2220DOE\u7684\u8865\u89d2\uff0e
14\uff0e\u5982\u56fe1\uff0d90\u6240\u793a\uff0eBE\u5e73\u5206\u2220ABC\uff0c\u2220CBF=\u2220CFB=55\u00b0\uff0c\u2220EDF=70\u00b0\uff0e\u6c42\u8bc1\uff1aBC\u2016AE\uff0e
15\uff0e\u5982\u56fe1\uff0d91\u6240\u793a\uff0e\u5728\u25b3ABC\u4e2d\uff0cEF\u22a5AB\uff0cCD\u22a5AB\uff0c\u2220CDG=\u2220BEF\uff0e\u6c42\u8bc1\uff1a\u2220AGD=\u2220ACB\uff0e
16\uff0e\u5982\u56fe1\uff0d92\u6240\u793a\uff0e\u5728\u25b3ABC\u4e2d\uff0c\u2220B=\u2220C\uff0cBD\u22a5AC\u4e8eD\uff0e\u6c42
17\uff0e\u5982\u56fe1\uff0d93\u6240\u793a\uff0e\u5728\u25b3ABC\u4e2d\uff0cE\u4e3aAC\u7684\u4e2d\u70b9\uff0cD\u5728BC\u4e0a\uff0c\u4e14BD\u2236DC=1\u22362\uff0cAD\u4e0eBE\u4ea4\u4e8eF\uff0e\u6c42\u25b3BDF\u4e0e\u56db\u8fb9\u5f62FDCE\u7684\u9762\u79ef\u4e4b\u6bd4\uff0e
18\uff0e\u5982\u56fe1\uff0d94\u6240\u793a\uff0e\u56db\u8fb9\u5f62ABCD\u4e24\u7ec4\u5bf9\u8fb9\u5ef6\u957f\u76f8\u4ea4\u4e8eK\u53caL\uff0c\u5bf9\u89d2\u7ebfAC\u2016KL\uff0cBD\u5ef6\u957f\u7ebf\u4ea4KL\u4e8eF\uff0e\u6c42\u8bc1\uff1aKF=FL\uff0e
19\uff0e\u4efb\u610f\u6539\u53d8\u67d0\u4e09\u4f4d\u6570\u6570\u7801\u987a\u5e8f\u6240\u5f97\u4e4b\u6570\u4e0e\u539f\u6570\u4e4b\u548c\u80fd\u5426\u4e3a999\uff1f\u8bf4\u660e\u7406\u7531\uff0e
20\uff0e\u8bbe\u6709\u4e00\u5f208\u884c\u30018\u5217\u7684\u65b9\u683c\u7eb8\uff0c\u968f\u4fbf\u628a\u5176\u4e2d32\u4e2a\u65b9\u683c\u6d82\u4e0a\u9ed1\u8272\uff0c\u5269\u4e0b\u768432\u4e2a\u65b9\u683c\u6d82\u4e0a\u767d\u8272\uff0e\u4e0b\u9762\u5bf9\u6d82\u4e86\u8272\u7684\u65b9\u683c\u7eb8\u65bd\u884c\u201c\u64cd\u4f5c\u201d\uff0c\u6bcf\u6b21\u64cd\u4f5c\u662f\u628a\u4efb\u610f\u6a2a\u884c\u6216\u8005\u7ad6\u5217\u4e0a\u7684\u5404\u4e2a\u65b9\u683c\u540c\u65f6\u6539\u53d8\u989c\u8272\uff0e\u95ee\u80fd\u5426\u6700\u7ec8\u5f97\u5230\u6070\u6709\u4e00\u4e2a\u9ed1\u8272\u65b9\u683c\u7684\u65b9\u683c\u7eb8\uff1f
21\uff0e\u5982\u679c\u6b63\u6574\u6570p\u548cp+2\u90fd\u662f\u5927\u4e8e3\u7684\u7d20\u6570\uff0c\u6c42\u8bc1\uff1a6\uff5c(p\uff0b1)\uff0e
22\uff0e\u8bben\u662f\u6ee1\u8db3\u4e0b\u5217\u6761\u4ef6\u7684\u6700\u5c0f\u6b63\u6574\u6570\uff0c\u5b83\u4eec\u662f75\u7684\u500d\u6570\uff0c\u4e14\u6070\u6709
23\uff0e\u623f\u95f4\u91cc\u51f3\u5b50\u548c\u6905\u5b50\u82e5\u5e72\u4e2a\uff0c\u6bcf\u4e2a\u51f3\u5b50\u67093\u6761\u817f\uff0c\u6bcf\u628a\u6905\u5b50\u67094\u6761\u817f\uff0c\u5f53\u5b83\u4eec\u5168\u88ab\u4eba\u5750\u4e0a\u540e\uff0c\u5171\u670943\u6761\u817f(\u5305\u62ec\u6bcf\u4e2a\u4eba\u7684\u4e24\u6761\u817f)\uff0c\u95ee\u623f\u95f4\u91cc\u6709\u51e0\u4e2a\u4eba\uff1f
24\uff0e\u6c42\u4e0d\u5b9a\u65b9\u7a0b49x-56y+14z=35\u7684\u6574\u6570\u89e3\uff0e
25\uff0e\u7537\u3001\u5973\u54048\u4eba\u8df3\u96c6\u4f53\u821e\uff0e
(1)\u5982\u679c\u7537\u5973\u5206\u7ad9\u4e24\u5217\uff1b
(2)\u5982\u679c\u7537\u5973\u5206\u7ad9\u4e24\u5217\uff0c\u4e0d\u8003\u8651\u5148\u540e\u6b21\u5e8f\uff0c\u53ea\u8003\u8651\u7537\u5973\u5982\u4f55\u7ed3\u6210\u821e\u4f34\uff0e
\u95ee\u5404\u6709\u591a\u5c11\u79cd\u4e0d\u540c\u60c5\u51b5\uff1f
26\uff0e\u75311\uff0c2\uff0c3\uff0c4\uff0c5\u8fd95\u4e2a\u6570\u5b57\u7ec4\u6210\u7684\u6ca1\u6709\u91cd\u590d\u6570\u5b57\u7684\u4e94\u4f4d\u6570\u4e2d\uff0c\u6709\u591a\u5c11\u4e2a\u5927\u4e8e34152\uff1f
27\uff0e\u7532\u706b\u8f66\u957f92\u7c73\uff0c\u4e59\u706b\u8f66\u957f84\u7c73\uff0c\u82e5\u76f8\u5411\u800c\u884c\uff0c\u76f8\u9047\u540e\u7ecf\u8fc71.5\u79d2(s)\u4e24\u8f66\u9519\u8fc7\uff0c\u82e5\u540c\u5411\u800c\u884c\u76f8\u9047\u540e\u7ecf6\u79d2\u4e24\u8f66\u9519\u8fc7\uff0c\u6c42\u7532\u4e59\u4e24\u706b\u8f66\u7684\u901f\u5ea6\uff0e
28\uff0e\u7532\u4e59\u4e24\u751f\u4ea7\u5c0f\u961f\u5171\u540c\u79cd\u83dc\uff0c\u79cd\u4e864\u5929\u540e\uff0c\u7531\u7532\u961f\u5355\u72ec\u5b8c\u6210\u5269\u4e0b\u7684\uff0c\u53c8\u75282\u5929\u5b8c\u6210\uff0e\u82e5\u7532\u5355\u72ec\u5b8c\u6210\u6bd4\u4e59\u5355\u72ec\u5b8c\u6210\u5168\u90e8\u4efb\u52a1\u5feb3\u5929\uff0e\u6c42\u7532\u4e59\u5355\u72ec\u5b8c\u6210\u5404\u7528\u591a\u5c11\u5929\uff1f
29\uff0e\u4e00\u8239\u5411\u76f8\u8ddd240\u6d77\u91cc\u7684\u67d0\u6e2f\u51fa\u53d1\uff0c\u5230\u8fbe\u76ee\u7684\u5730\u524d48\u6d77\u91cc\u5904\uff0c\u901f\u5ea6\u6bcf\u5c0f\u65f6\u51cf\u5c1110\u6d77\u91cc\uff0c\u5230\u8fbe\u540e\u6240\u7528\u7684\u5168\u90e8\u65f6\u95f4\u4e0e\u539f\u901f\u5ea6\u6bcf\u5c0f\u65f6\u51cf\u5c114\u6d77\u91cc\u822a\u884c\u5168\u7a0b\u6240\u7528\u7684\u65f6\u95f4\u76f8\u7b49\uff0c\u6c42\u539f\u6765\u7684\u901f\u5ea6\uff0e
30\uff0e\u67d0\u5de5\u5382\u7532\u4e59\u4e24\u4e2a\u8f66\u95f4\uff0c\u53bb\u5e74\u8ba1\u5212\u5b8c\u6210\u7a0e\u5229750\u4e07\u5143\uff0c\u7ed3\u679c\u7532\u8f66\u95f4\u8d85\u989d15\uff05\u5b8c\u6210\u8ba1\u5212\uff0c\u4e59\u8f66\u95f4\u8d85\u989d10\uff05\u5b8c\u6210\u8ba1\u5212\uff0c\u4e24\u8f66\u95f4\u5171\u540c\u5b8c\u6210\u7a0e\u5229845\u4e07\u5143\uff0c\u6c42\u53bb\u5e74\u8fd9\u4e24\u4e2a\u8f66\u95f4\u5206\u522b\u5b8c\u6210\u7a0e\u5229\u591a\u5c11\u4e07\u5143\uff1f
31\uff0e\u5df2\u77e5\u7532\u4e59\u4e24\u79cd\u5546\u54c1\u7684\u539f\u4ef7\u4e4b\u548c\u4e3a150\u5143\uff0e\u56e0\u5e02\u573a\u53d8\u5316\uff0c\u7532\u5546\u54c1\u964d\u4ef710\uff05\uff0c\u4e59\u5546\u54c1\u63d0\u4ef720\uff05\uff0c\u8c03\u4ef7\u540e\u7532\u4e59\u4e24\u79cd\u5546\u54c1\u7684\u5355\u4ef7\u4e4b\u548c\u6bd4\u539f\u5355\u4ef7\u4e4b\u548c\u964d\u4f4e\u4e861\uff05\uff0c\u6c42\u7532\u4e59\u4e24\u79cd\u5546\u54c1\u539f\u5355\u4ef7\u5404\u662f\u591a\u5c11\uff1f
32\uff0e\u5c0f\u7ea2\u53bb\u5e74\u6691\u5047\u5728\u5546\u5e97\u4e70\u4e862\u628a\u513f\u7ae5\u7259\u5237\u548c3\u652f\u7259\u818f\uff0c\u6b63\u597d\u628a\u5e26\u53bb\u7684\u94b1\u7528\u5b8c\uff0e\u5df2\u77e5\u6bcf\u652f\u7259\u818f\u6bd4\u6bcf\u628a\u7259\u5237\u591a1\u5143\uff0c\u4eca\u5e74\u6691\u5047\u5979\u53c8\u5e26\u540c\u6837\u7684\u94b1\u53bb\u8be5\u5546\u5e97\u4e70\u540c\u6837\u7684\u7259\u5237\u548c\u7259\u818f\uff0c\u56e0\u4e3a\u4eca\u5e74\u7684\u7259\u5237\u6bcf\u628a\u6da8\u52301.68\u5143\uff0c\u7259\u818f\u6bcf\u652f\u6da8\u4ef730\uff05\uff0c\u5c0f\u7ea2\u53ea\u597d\u4e702\u628a\u7259\u5237\u548c2\u652f\u7259\u818f\uff0c\u7ed3\u679c\u627e\u56de4\u89d2\u94b1\uff0e\u8bd5\u95ee\u53bb\u5e74\u6691\u5047\u6bcf\u628a\u7259\u5237\u591a\u5c11\u94b1\uff1f\u6bcf\u652f\u7259\u818f\u591a\u5c11\u94b1\uff1f
33\uff0e\u67d0\u5546\u573a\u5982\u679c\u5c06\u8fdb\u8d27\u5355\u4ef7\u4e3a8\u5143\u7684\u5546\u54c1\uff0c\u6309\u6bcf\u4ef612\u5143\u5356\u51fa\uff0c\u6bcf\u5929\u53ef\u552e\u51fa400\u4ef6\uff0c\u636e\u7ecf\u9a8c\uff0c\u82e5\u6bcf\u4ef6\u5c11\u53561\u5143\uff0c\u5219\u6bcf\u5929\u53ef\u591a\u5356\u51fa200\u4ef6\uff0c\u95ee\u6bcf\u4ef6\u5e94\u51cf\u4ef7\u591a\u5c11\u5143\u624d\u53ef\u83b7\u5f97\u6700\u597d\u7684\u6548\u76ca\uff1f
34\uff0e\u4eceA\u9547\u5230B\u9547\u7684\u8ddd\u79bb\u662f28\u5343\u7c73\uff0c\u4eca\u6709\u7532\u9a91\u81ea\u884c\u8f66\u75280\uff0e4\u5343\u7c73/\u5206\u949f\u7684\u901f\u5ea6\uff0c\u4eceA\u9547\u51fa\u53d1\u9a76\u5411B\u9547\uff0c25\u5206\u949f\u4ee5\u540e\uff0c\u4e59\u9a91\u81ea\u884c\u8f66\uff0c\u75280\uff0e6\u5343\u7c73/\u5206\u949f\u7684\u901f\u5ea6\u8ffd\u7532\uff0c\u8bd5\u95ee\u591a\u5c11\u5206\u949f\u540e\u8ffd\u4e0a\u7532\uff1f
35\uff0e\u73b0\u6709\u4e09\u79cd\u5408\u91d1\uff1a\u7b2c\u4e00\u79cd\u542b\u94dc60\uff05\uff0c\u542b\u953040\uff05\uff1b\u7b2c\u4e8c\u79cd\u542b\u953010\uff05\uff0c\u542b\u954d90\uff05\uff1b\u7b2c\u4e09\u79cd\u542b\u94dc20\uff05\uff0c\u542b\u953050\uff05\uff0c\u542b\u954d30\uff05\uff0e\u73b0\u5404\u53d6\u9002\u5f53\u91cd\u91cf\u7684\u8fd9\u4e09\u79cd\u5408\u91d1\uff0c\u7ec4\u6210\u4e00\u5757\u542b\u954d45\uff05\u7684\u65b0\u5408\u91d1\uff0c\u91cd\u91cf\u4e3a1\u5343\u514b\uff0e
(1)\u8bd5\u7528\u65b0\u5408\u91d1\u4e2d\u7b2c\u4e00\u79cd\u5408\u91d1\u7684\u91cd\u91cf\u8868\u793a\u7b2c\u4e8c\u79cd\u5408\u91d1\u7684\u91cd\u91cf\uff1b
(2)\u6c42\u65b0\u5408\u91d1\u4e2d\u542b\u7b2c\u4e8c\u79cd\u5408\u91d1\u7684\u91cd\u91cf\u8303\u56f4\uff1b
(3)\u6c42\u65b0\u5408\u91d1\u4e2d\u542b\u9530\u7684\u91cd\u91cf\u8303\u56f4
\u52fe\u80a1\u5b9a\u7406\u9898\u76ee
\u60ac\u8d4f\u5206\uff1a0 - \u89e3\u51b3\u65f6\u95f4\uff1a2009-4-11 16:41
\u5982\u56fe\uff0c\u5728Rt\u25b3ABC\u4e2d\uff0c\u2220C=90\u00b0\uff0cAD\u3001BE\u5206\u522b\u662f\u8fb9BC\u3001AC\u4e0a\u7684\u4e2d\u7ebf\uff0c\u4e14AD=8\uff0cBE=6\uff0c\u6c42AB\u3002
1.\u5df2\u77e5\uff0ca,b,c\u5206\u522b\u662f\u25b3ABC\u7684\u4e09\u8fb9\uff0c\u4e14|a-3|+\uff0810-2b)²+c²-8c+16=0\uff0c\u8bd5\u5224\u65ad\u25b3ABC\u7684\u5f62\u72b6\u3002
2.\u5728Rt\u25b3ABC\u4e2d\uff0c\u2220C=90\u00b0\uff0cD,E\u5206\u522b\u4e3aBC\u548cAC\u7684\u4e2d\u70b9\uff0cAD=5\uff0cBE=2\u6839\u53f710\uff0c\u6c42AB\u7684\u957f\u3002
-\u221a1 2/3 \u00f7\u221a5/54
\u221a2/3 \u00f7\u221a1/3
\u221a2x\u7684\u5e73\u65b9y\u7684\u5e73\u65b9/5 \u00f7(\u221a-xy/m\u76843\u5e73\u65b9)
\u221a3b\u7684\u5e73\u65b9\u00f73\u221ab/2\u00b71/2\u221a2b/3
1.225
2.1/10 6\u6b21\u65b9\uff08\u662f10\u76846\u6b21\u65b9\uff0c\u4e0d\u4f1a\u6253= =\uff09
3.121/144
4.9/361
\u53ef\u4ee5\u4f7f\u7528\u5982\u4e0b\u65b9\u6cd5\u6765\u8ba1\u7b97\u6b63\u6570a\u7684\u5e73\u65b9\u6839 \uff0c\u8ba1\u7b97\u7684\u65b9\u6cd5\u662f\u8fd9\u6837\u7684\uff1a\u4efb\u610f\u9009\u5b9a\u4e00\u4e2a\u6b63\u6570 \uff0c\u4ece \u51fa\u53d1\u6309\u4e0b\u9762\u516c\u5f0f\u8ba1\u7b97 \uff1a \uff0c\u540c\u6837\uff0c\u4ece \u8ba1\u7b97 \uff1a \uff0c\u5e76\u9010\u6b65\u9012\u63a8\u51fa \uff1a \uff0c\u5f53n\u503c\u8f83\u5927\u65f6\uff0c\u80fd\u5f97\u5230 \u7684\u8f83\u7cbe\u786e\u7684\u8fd1\u4f3c\u503c \u3002\u6839\u636e\u4e0a\u8ff0\u65b9\u6cd5\u8bbe\u8ba1\u4e00\u4e2a\u8ba1\u7b97\u7684\u7b97\u6cd5\uff0c\u8ba1\u7b97\u6b63\u6570a\u7684\u5e73\u65b9\u6839\u3002
\u7528VB\u8bed\u8a00
\u4e00\u3001\u586b\u7a7a\u9898\uff1a
1\uff0e\u4e00\u4e2a\u6b63\u6570a\u7684\u5e73\u65b9\u6839\uff0c\u7528\u7b26\u53f7\u201c________\u201d\u8868\u793a\uff0c\u5176\u4e2da\u53eb\u505a________\uff0c\u6839\u6307\u6570\u662f________\uff0e
2\uff0e\u5e73\u65b9\u6839\u7b49\u4e8e\u5b83\u672c\u8eab\u7684\u6570\u662f________\uff0c\u7b97\u672f\u5e73\u65b9\u6839\u7b49\u4e8e\u5b83\u672c\u8eab\u7684\u6570\u662f________\uff0e
3\uff0e________\u7684\u5e73\u65b9\u6839\u6709\u4e24\u4e2a\uff0c________\u7684\u5e73\u65b9\u6839\u53ea\u6709\u4e00\u4e2a\uff0c\u5e76\u4e14________\u6ca1\u6709\u5e73\u65b9\u6839\uff0e
4\uff0e0.25\u7684\u7b97\u672f\u5e73\u65b9\u6839\u662f________\uff0e
5\uff0e9\u7684\u7b97\u672f\u5e73\u65b9\u6839\u662f________\uff0c \u7684\u7b97\u672f\u5e73\u65b9\u6839\u662f________\uff0e
6\uff0e36\u7684\u5e73\u65b9\u6839\u662f________\uff0c\u82e5 \uff0c\u5219x\uff1d________\uff0e
7\uff0e \u7684\u5e73\u65b9\u6839\u662f________\uff0c \u7684\u5e73\u65b9\u6839\u662f________\uff0c \u7684\u7b97\u672f\u5e73\u65b9\u6839\u662f________\uff0e
8\uff0e81\u7684\u5e73\u65b9\u6839\u662f________\uff0c\u7b97\u672f\u5e73\u65b9\u6839\u662f________\uff0c\u7b97\u672f\u5e73\u65b9\u6839\u7684\u76f8\u53cd\u6570\u662f________\uff0c\u5e73\u65b9\u6839\u7684\u5012\u6570\u662f________\uff0c\u5e73\u65b9\u6839\u7684\u7edd\u5bf9\u503c\u662f________\uff0e
9\uff0e \uff0c\u5219x\uff1d________\uff0e
10\uff0e\u5f53 a________\u65f6\uff0c \u6709\u610f\u4e49\uff0e
\u4e8c\u3001\u5224\u65ad\u5e76\u52a0\u4ee5\u8bf4\u660e\uff0e
1\uff0e \u7684\u5e73\u65b9\u662f9\uff1b\uff08 \uff09
2\uff0e1\u7684\u5e73\u65b9\u6839\u662f1\uff1b\uff08 \uff09
3\uff0e0\u7684\u5e73\u65b9\u6839\u662f0\uff1b\uff08 \uff09
4\uff0e\u65e0\u7406\u6570\u5c31\u662f\u5e26\u6839\u53f7\u7684\u6570\uff1b\uff08 \uff09
5\uff0e \u7684\u5e73\u65b9\u6839\u662f \uff1b\uff08 \uff09
6\uff0e \u662f25\u7684\u4e00\u4e2a\u5e73\u65b9\u6839\uff1b\uff08 \uff09
7\uff0e\u6b63\u6570\u7684\u5e73\u65b9\u6839\u6bd4\u5b83\u7684\u5e73\u65b9\u5c0f\uff1b\uff08 \uff09
8\uff0e\u9664\u96f6\u5916\uff0c\u4efb\u4f55\u6570\u90fd\u6709\u4e24\u4e2a\u5e73\u65b9\u6839\uff1b\uff08 \uff09
9\uff0e \u7684\u5e73\u65b9\u6839\u662f \uff1b\uff08 \uff09
10\uff0e \u6ca1\u6709\u5e73\u65b9\u6839\uff1b\uff08 \uff09
11\uff0e\u96f6\u662f\u6700\u5c0f\u7684\u5b9e\u6570\uff1b\uff08 \uff09
12\uff0e23\u662f \u7684\u7b97\u672f\u5e73\u65b9\u6839\uff0e\uff08 \uff09
\u4e09\u3001\u9009\u62e9\u9898\uff1a
1\uff0e\u4e0b\u5217\u8bf4\u6cd5\u6b63\u786e\u7684\u662f\uff08 \uff09\uff0e
A\uff0e \u7684\u7b97\u672f\u5e73\u65b9\u6839\u662f B\uff0e \u7684\u5e73\u65b9\u6839\u662f
C\uff0e \u7684\u7b97\u672f\u5e73\u65b9\u6839\u662f D\uff0e \u7684\u5e73\u65b9\u6839\u662f
2\uff0e\u5728\u56db\u4e2a\u65700\uff0c \uff0c2\uff0c \u4e2d\uff0c\u6709\u5e73\u65b9\u6839\u7684\u662f\uff08 \uff09\uff0e
A\uff0e0\u4e0e B\uff0e0\uff0c \u4e0e
C\uff0e0\u4e0e D\uff0e0\uff0c2\u4e0e
3\uff0e\u82e5 \uff0c\u5219x\u4e3a\uff08 \uff09\uff0e
A\uff0e1 B\uff0e C\uff0e D\uff0e
4\uff0e \u7684\u5e73\u65b9\u6839\u662f\uff08 \uff09\uff0e
A\uff0e3 B\uff0e C\uff0e9 D\uff0e
5\uff0e \u7684\u7b97\u672f\u5e73\u65b9\u6839\u662f\uff08 \uff09\uff0e
A\uff0e16 B\uff0e C\uff0e4 D\uff0e
6\uff0e\u5982\u679c \u6709\u610f\u4e49\uff0c\u5219x\u7684\u53d6\u503c\u8303\u56f4\u662f\uff08 \uff09\uff0e
A\uff0ex\u22650 B\uff0ex\uff1e0 C\uff0ex\uff1e D\uff0ex\u2265
7\uff0e\u5982\u679c\u4e00\u4e2a\u81ea\u7136\u6570\u7684\u5e73\u65b9\u6839\u662f (a\u22650)\uff0c\u5219\u4e0b\u4e00\u4e2a\u81ea\u7136\u6570\u7684\u5e73\u65b9\u6839\u4e3a\uff08 \uff09\uff0e
A\uff0e B\uff0e C\uff0e D\uff0e
8\uff0e\u4e0b\u5217\u53d9\u8ff0\u6b63\u786e\u7684\u662f\uff08 \uff09\uff0e
A\uff0e \u662f7\u7684\u4e00\u4e2a\u5e73\u65b9\u6839 B\uff0e11\u7684\u5e73\u65b9\u6839\u662f
C\uff0e\u5982\u679cx\u6709\u7b97\u672f\u5e73\u65b9\u6839\uff0c\u5219x\uff1e0 D\uff0e
9\uff0e\u8ba1\u7b97 \u7684\u5e73\u65b9\u6839\uff0c\u4e0b\u5217\u8868\u8fbe\u5f0f\u6b63\u786e\u7684\u662f\uff08 \uff09\uff0e
A\uff0e B\uff0e
C\uff0e D\uff0e
10\uff0e\u4e0b\u5217\u5404\u5f0f\u4e2d\u6b63\u786e\u7684\u662f\uff08 \uff09\uff0e
A\uff0e B\uff0e
C\uff0e D\uff0e
\u56db\u3001\u5206\u522b\u6c42\u51fa\u4e0b\u5217\u5404\u6570\u7684\u5e73\u65b9\u6839\uff0e
1\uff0e36 2\uff0e0.0081 3\uff0e169 4\uff0e
5\uff0e 6\uff0e40000 7\uff0e 8\uff0e
\u4e94\u3001\u5206\u522b\u6c42\u51fa\u4e0b\u5217\u5404\u6570\u7684\u7b97\u672f\u5e73\u65b9\u6839\uff0e
1\uff0e0.0169 2\uff0e225 3\uff0e100
4\uff0e 5\uff0e16 6\uff0e25
\u516d\u3001x\u4e3a\u4f55\u503c\u65f6\uff0c\u4e0b\u5217\u5404\u5f0f\u6709\u610f\u4e49\uff1f
1\uff0e 2\uff0e 3\uff0e 4\uff0e
5\uff0e 6\uff0e 7\uff0e 8\uff0e
9\uff0e 10\uff0e
1/2x=2/x+3
\u5bf9\u89d2\u76f8\u4e58
4x=x+3
3x=3
x=1
\u5206\u5f0f\u65b9\u7a0b\u8981\u68c0\u9a8c
\u7ecf\u68c0\u9a8c\uff0cx=1\u662f\u65b9\u7a0b\u7684\u89e3
x/(x+1)=2x/(3x+3)+1
\u4e24\u8fb9\u4e583(x+1)
3x=2x+(3x+3)
3x=5x+3
2x=-3
x=-3/2
\u5206\u5f0f\u65b9\u7a0b\u8981\u68c0\u9a8c
\u7ecf\u68c0\u9a8c\uff0cx=-3/2\u662f\u65b9\u7a0b\u7684\u89e3
2/x-1=4/x^2-1
\u4e24\u8fb9\u4e58(x+1)(x-1)
2(x+1)=4
2x+2=4
2x=2
x=1
\u5206\u5f0f\u65b9\u7a0b\u8981\u68c0\u9a8c
\u7ecf\u68c0\u9a8c\uff0cx=1\u4f7f\u5206\u6bcd\u4e3a0\uff0c\u662f\u589e\u6839\uff0c\u820d\u53bb
\u6240\u4ee5\u539f\u65b9\u7a0b\u65e0\u89e3
5/x^2+x - 1/x^2-x=0
\u4e24\u8fb9\u4e58x(x+1)(x-1)
5(x-1)-(x+1)=0
5x-5-x-1=0
4x=6
x=3/2
\u5206\u5f0f\u65b9\u7a0b\u8981\u68c0\u9a8c
\u7ecf\u68c0\u9a8c\uff0cx=3/2\u662f\u65b9\u7a0b\u7684\u89e3
5x/(3x-4)=1/(4-3x)-2
\u4e583x-4
5x=-1-2(3x-4)=-1-6x+8
11x=7
x=7/11
\u5206\u5f0f\u65b9\u7a0b\u8981\u68c0\u9a8c
\u7ecf\u68c0\u9a8c
x=7/11\u662f\u65b9\u7a0b\u7684\u89e3
1/(x+2) + 1/(x+7) = 1/(x+3) + 1/(x+6)
\u901a\u5206
(x+7+x+2)/(x+2)(x+7)=(x+6+x+3)/(x+3)(x+6)
(2x+9)/(x^2-9x+14)-(2x+9)/(x^2+9x+18)=0
(2x+9)[1/(x^2-9x+14)-1/(x^2+9x+18)]=0
\u56e0\u4e3ax^2-9x+14\u4e0d\u7b49\u4e8ex^2+9x+18
\u6240\u4ee51/(x^2-9x+14)-1/(x^2+9x+18)\u4e0d\u7b49\u4e8e0
\u6240\u4ee52x+9=0
x=-9/2
\u5206\u5f0f\u65b9\u7a0b\u8981\u68c0\u9a8c
\u7ecf\u68c0\u9a8c
x=-9/2\u662f\u65b9\u7a0b\u7684\u89e3
7/(x^2+x)+1/(x^2-x)=6/(x^2-1)
\u4e24\u8fb9\u540c\u4e58x(x+1)(x-1)
7(x-1)+(x+1)=6x
8x-6=6x
2x=6
x=3
\u5206\u5f0f\u65b9\u7a0b\u8981\u68c0\u9a8c
\u7ecf\u68c0\u9a8c\uff0cx=3\u662f\u65b9\u7a0b\u7684\u89e3
\u5316\u7b80\u6c42\u503c\u3002[X-1-\uff088/X+1\uff09]/[X+3/X+1] \u5176\u4e2dX=3-\u6839\u53f72
[X-1-\uff088/X+1\uff09]/[(X+3)/(X+1)]
={[(X-1)(X+1)-8]/(X+1)}/[(X+3)/(X+1)]
=(X^2-9)/(X+3)
=(X+3)(X-3)/(X+3)
=X-3
=-\u6839\u53f72
8/(4x^2-1)+(2x+3)/(1-2x)=1
8/(4x^2-1)-(2x+3)/(2x-1)=1
8/(4x^2-1)-(2x+3)(2x+1)/(2x-1)(2x+1)=1
[8-(2x+3)(2x+1)]/(4x^2-1)=1
8-(4x^2+8x+3)=(4x^2-1)
8x^2+8x-6=0
4x^2+4x-3=0
(2x+3)(2x-1)=0
x1=-3/2
x2=1/2
\u4ee3\u5165\u68c0\u9a8c\uff0cx=1/2\u4f7f\u5f97\u5206\u6bcd1-2x\u548c4x^2-1=0\u3002\u820d\u53bb
\u6240\u4ee5\u539f\u65b9\u7a0b\u89e3:x=-3/2
(x+1)/(x+2)+(x+6)/(x+7)=(x+2)/(x+3)+(x+5)/(x+6)
1-1/(x+2)+1-1/(x+7)=1-1/(x+3)+1-1/(x+6)
-1/(x+2)-1/(x+7)=-1/(x+3)-1/(x+6)
1/(x+2)+1/(x+7)=1/(x+3)+1/(x+6)
1/(x+2)-1/(x+3)=1/(x+6)-1/(x+7)
(x+3-(x+2))/(x+2)(x+3)=(x+7-(x+6))/(x+6)(x+7)
1/(x+2)(x+3)=1/(x+6)(x+7)
(x+2)(x+3)=(x+6)(x+7)
x^2+5x+6=x^2+13x+42
8x=-36
x=-9/2
\u7ecf\u68c0\u9a8c\uff0cx=-9/2\u662f\u65b9\u7a0b\u7684\u6839\u3002
(2-x)/(x-3)+1/(3-x)=1
(2-x)/(x-3)-1/(x-3)=1
(2-x-1)/(x-3)=1
1-x=x-3
x=2
\u5206\u5f0f\u65b9\u7a0b\u8981\u68c0\u9a8c
\u7ecf\u68c0\u9a8c\uff0cx=2\u662f\u65b9\u7a0b\u7684\u6839
\u9898\u76ee\uff0c\u25b3ABC\u7684\u8fb9AB\u3001AC\u4e0a\u7684\u4e24\u5b9a\u70b9\uff0c\u5728BC\u4e0a\u6c42\u4e00\u70b9M\u4f7f\u25b3MEF\u7684\u5468\u957f\u6700\u77ed.
\u4e09\u89d2\u5f62ABC,AEC\u662f\u7b49\u8fb9\u4e09\u89d2\u5f62\u3002\u6c42\u8bc1DC=BE
\u95ee\u9898\u8865\u5145\uff1a\u76f4\u7ebfCD\u4e0eBE\u4ea4\u4e0e\u70b9O\uff0c\u8fde\u63a5DB\uff0cBC\uff0cEC\u3002DB\u662f\u7b49\u8fb9\u4e09\u89d2\u5f62ABD\u7684\u5176\u4e2d\u4e00\u8fb9\uff0cCE\u662f\u7b49\u8fb9\u4e09\u89d2\u5f62ACE\u7684\u5176\u4e2d\u4e00\u8fb9\u3002\u6c42\u8bc1CD\u7b49\u4e8eBE\u3002
\u5728\u25b3ABC\u4e2d\uff0cAB=AC,E\u662fAC\u53cd\u5411\u5ef6\u957f\u7ebf\u4e0a\u4e00\u70b9\uff0c\u5728AB\u4e0a\u622a\u53d6AF=AE,\u8bf7\u95ee\uff1aEF\u4e0eBC\u662f\u600e\u6837\u7684\u4f4d\u7f6e\u5173\u7cfb\uff1f\u8bf4\u660e\u7406\u7531
\u4e00\u4e2a\u4e24\u4f4d\u6570\uff0c\u4e2a\u4f4d\u6570\u4e3aA\uff0c\u5341\u4f4d\u6570\u6bd4\u4e2a\u4f4d\u6570\u59273\uff0c\u5219\u8fd9\u4e2a\u4e24\u4f4d\u6570\u4e3a\uff08 \uff09
\u5c0f\u660e\u886c\u8863\u4e0a\u7684\u6570\u5b57\u662f81\uff0c\u5219\u6b64\u6570\u5b57\u5728\u955c
\u516b\u5e74\u7ea7\u4e0a\u671f\u6570\u5b66\u671f\u4e2d\u8bd5\u5377
\uff08\u8003\u8bd5\u65f6\u95f4\uff1a120\u5206\u949f\uff09 \u51fa\u5377\uff1a\u65b0\u4e2d\u795d\u6bc5
\u586b\u7a7a\u9898\uff081\uff5e10\u9898 \u6bcf\u7a7a1\u5206\uff0c11\uff5e14\u9898 \u6bcf\u7a7a2\u5206\uff0c\u517128\u5206\uff09
1\u3001\uff081\uff09\u5728\u25a1ABCD\u4e2d\uff0c\u2220A=44\uff0c\u5219\u2220B= \uff0c\u2220C= \u3002
\uff082\uff09\u82e5\u25a1ABCD\u7684\u5468\u957f\u4e3a40cm\uff0c AB:BC=2:3\uff0c \u5219CD= \uff0c AD= \u3002
2\u3001\u82e5\u4e00\u4e2a\u6b63\u65b9\u4f53\u68f1\u957f\u6269\u59272\u500d\uff0c\u5219\u4f53\u79ef\u6269\u5927 \u500d\u3002
\u8981\u4f7f\u4e00\u4e2a\u7403\u7684\u4f53\u79ef\u6269\u592727\u500d\uff0c\u5219\u534a\u5f84\u6269\u5927 \u500d\u3002
3\u3001\u5bf9\u89d2\u7ebf\u957f\u4e3a2\u7684\u6b63\u65b9\u5f62\u8fb9\u957f\u4e3a \uff1b\u5b83\u7684\u9762\u79ef\u662f \u3002
4\u3001\u5316\u7b80\uff1a\uff081\uff09 \uff082\uff09 , \uff083\uff09 = ______\u3002
5\u3001\u4f30\u7b97\uff1a\uff081\uff09 \u2248_____\uff08\u8bef\u5dee\u5c0f\u4e8e1\uff09\uff0c\uff082\uff09 \u2248_____\uff08\u7cbe\u786e\u52300.1\uff09\u3002
6\u30015\u7684\u5e73\u65b9\u6839\u662f \uff0c \u7684\u5e73\u65b9\u6839\u662f \uff0c\uff0d8\u7684\u7acb\u65b9\u6839\u662f \u3002
7\u3001\u5982\u56fe1,64\u3001400\u5206\u522b\u4e3a\u6240\u5728\u6b63\u65b9\u5f62\u7684\u9762\u79ef\uff0c\u5219\u56fe\u4e2d\u5b57\u6bcd\u6240\u4ee3\u8868\u7684\u6b63\u65b9\u5f62\u9762\u79ef\u662f \u3002
8\u3001\u5982\u56fe2\uff0c\u76f4\u89d2\u4e09\u89d2\u5f62\u4e2d\u672a\u77e5\u8fb9\u7684\u957f\u5ea6 = \u3002
9\u3001\u5df2\u77e5 ,\u5219\u7531\u6b64 \u4e3a\u4e09\u8fb9\u7684\u4e09\u89d2\u5f62\u662f \u4e09\u89d2\u5f62\u3002
10\u3001\u949f\u8868\u4e0a\u7684\u5206\u9488\u7ed5\u5176\u8f74\u5fc3\u65cb\u8f6c,\u5206\u9488\u7ecf\u8fc715\u5206\u540e,\u5206\u9488\u8f6c\u8fc7\u7684\u89d2\u5ea6\u662f \u3002
11\u3001\u5982\u56fe3\uff0c\u4e00\u76f4\u89d2\u68af\u5f62,\u2220B=90\u00b0,AD\u2016BC,AB=BC=8,CD=10,\u5219\u68af\u5f62\u7684\u9762\u79ef\u662f \u3002
12\u3001\u5982\u56fe4\uff0c\u5df2\u77e5 ABCD\u4e2dAC\uff1dAD\uff0c\u2220B\uff1d72\u00b0\uff0c\u5219\u2220CAD\uff1d_________\u3002
13\u3001\u56fe5\u4e2d\uff0c\u7532\u56fe\u600e\u6837\u53d8\u6210\u4e59\u56fe\uff1a__ __ ___________________________ _\u3002
14\u3001\u7528\u4e24\u4e2a\u4e00\u6837\u4e09\u89d2\u5c3a\uff08\u542b30\u00b0\u89d2\u7684\u90a3\u4e2a\uff09\uff0c\u80fd\u62fc\u51fa______\u79cd\u5e73\u884c\u56db\u8fb9\u5f62\u3002
\u4e8c\u3001\u9009\u62e9\u9898\uff0815\uff5e25\u9898 \u6bcf\u98982\u5206\uff0c\u517122\u5206\uff09
15\u3001\u4e0b\u5217\u8fd0\u52a8\u662f\u5c5e\u4e8e\u65cb\u8f6c\u7684\u662f( )
A.\u6eda\u52a8\u8fc7\u7a0b\u4e2d\u7684\u7bee\u7403 B.\u949f\u8868\u7684\u949f\u6446\u7684\u6446\u52a8
C.\u6c14\u7403\u5347\u7a7a\u7684\u8fd0\u52a8 D.\u4e00\u4e2a\u56fe\u5f62\u6cbf\u67d0\u76f4\u7ebf\u5bf9\u6298\u8fc7\u7a0b
16\u3001\u5982\u56fe6\uff0c\u662f\u6211\u6821\u7684\u957f\u65b9\u5f62\u6c34\u6ce5\u64cd\u573a\uff0c\u5982\u679c\u4e00\u5b66\u751f\u8981\u4eceA\u89d2\u8d70\u5230C\u89d2\uff0c\u81f3\u5c11\u8d70\uff08 \uff09
A.140\u7c73 B.120\u7c73 C.100\u7c73 D.90\u7c73
17\u3001\u4e0b\u5217\u8bf4\u6cd5\u6b63\u786e\u7684\u662f( )
A. \u6709\u7406\u6570\u53ea\u662f\u6709\u9650\u5c0f\u6570 B. \u65e0\u7406\u6570\u662f\u65e0\u9650\u5c0f\u6570
C. \u65e0\u9650\u5c0f\u6570\u662f\u65e0\u7406\u6570 D. \u662f\u5206\u6570
18\u3001\u4e0b\u5217\u6761\u4ef6\u4e2d\uff0c\u4e0d\u80fd\u5224\u5b9a\u56db\u8fb9\u5f62ABCD\u4e3a\u5e73\u884c\u56db\u8fb9\u5f62\u7684\u6761\u4ef6\u662f\uff08 \uff09
A. AB\u2016CD\uff0cAB=CD B. AB\u2016CD\uff0cAD\u2016BC
C. AB=AD, BC=CD D. AB=CD AD=BC
19\u3001\u4e0b\u5217\u6570\u7ec4\u4e2d\uff0c\u4e0d\u662f\u52fe\u80a1\u6570\u7684\u662f\uff08 \uff09
A 3\u30014\u30015 B 9\u300112\u300115 C 7\u300124\u300125 D 1.5\u30012\u30012.5
20\u3001\u548c\u6570\u8f74\u4e0a\u7684\u70b9\u6210\u4e00\u4e00\u5bf9\u5e94\u5173\u7cfb\u7684\u6570\u662f\uff08 \uff09
A.\u81ea\u7136\u6570 B.\u6709\u7406\u6570 C.\u65e0\u7406\u6570 D. \u5b9e\u6570
21\u3001\u5c0f\u4e30\u7684\u5988\u5988\u4e70\u4e86\u4e00\u90e829\u82f1\u5bf8(74cm)\u7684\u7535\u89c6\u673a,\u4e0b\u5217\u5bf929\u82f1\u5bf8\u7684\u8bf4\u6cd5
\u4e2d\u6b63\u786e\u7684\u662f\uff08 \uff09
A. \u5c0f\u4e30\u8ba4\u4e3a\u6307\u7684\u662f\u5c4f\u5e55\u7684\u957f\u5ea6; B \u5c0f\u4e30\u7684\u5988\u5988\u8ba4\u4e3a\u6307\u7684\u662f\u5c4f\u5e55\u7684\u5bbd\u5ea6;
C. \u5c0f\u4e30\u7684\u7238\u7238\u8ba4\u4e3a\u6307\u7684\u662f\u5c4f\u5e55\u7684\u5468\u957f;D. \u552e\u8d27\u5458\u8ba4\u4e3a\u6307\u7684\u662f\u5c4f\u5e55\u5bf9\u89d2\u7ebf\u7684\u957f\u5ea6.
22\u3001\u5c0f\u521a\u51c6\u5907\u6d4b\u91cf\u4e00\u6bb5\u6cb3\u6c34\u7684\u6df1\u5ea6,\u4ed6\u628a\u4e00\u6839\u7af9\u7aff\u63d2\u5230\u79bb\u5cb8\u8fb91.5m\u8fdc\u7684\u6c34\u5e95,\u7af9\u7aff\u9ad8\u51fa\u6c34\u97620.5m,\u628a\u7af9\u7aff\u7684\u9876\u7aef\u62c9\u5411\u5cb8\u8fb9,\u7aff\u9876\u548c\u5cb8\u8fb9\u7684\u6c34\u9762\u521a\u597d\u76f8\u9f50,\u5219\u6cb3\u6c34\u7684\u6df1\u5ea6\u4e3a\uff08 \uff09
A. 2m; B. 2.5m; C. 2.25m; D. 3m.
23\u3001\u5bf9\u89d2\u7ebf\u4e92\u76f8\u5782\u76f4\u4e14\u76f8\u7b49\u7684\u56db\u8fb9\u5f62\u4e00\u5b9a\u662f\uff08 \uff09
A\u3001\u6b63\u65b9\u5f62 B\u3001\u77e9\u5f62 C\u3001\u83f1\u5f62 D\u3001\u65e0\u6cd5\u786e\u5b9a\u5176\u5f62\u72b6
24\u3001\u4e0b\u5217\u8bf4\u6cd5\u4e0d\u6b63\u786e\u7684\u662f\uff08 \uff09
A. 1\u7684\u5e73\u65b9\u6839\u662f\u00b11 B. \u20131\u7684\u7acb\u65b9\u6839\u662f\uff0d1
C. \u662f2\u7684\u5e73\u65b9\u6839 D. \u20133\u662f \u7684\u5e73\u65b9\u6839
25\u3001\u5e73\u884c\u56db\u8fb9\u5f62\u7684\u4e24\u6761\u5bf9\u89d2\u7ebf\u548c\u4e00\u8fb9\u7684\u957f\u53ef\u4f9d\u6b21\u53d6\uff08 \uff09
A. 6\uff0c6\uff0c6 B. 6\uff0c4\uff0c3 C. 6\uff0c4\uff0c6 D. 3\uff0c4\uff0c5
\u4e09\u3001\u89e3\u7b54\u9898\uff0826\uff5e33\u9898 \u517150\u5206\uff09
26\u3001\uff084\u5206\uff09\u628a\u4e0b\u5217\u5404\u6570\u586b\u5165\u76f8\u5e94\u7684\u96c6\u5408\u4e2d\uff08\u53ea\u586b\u5e8f\u53f7\uff09
\uff081\uff093.14\uff082\uff09- \uff083\uff09- \uff084\uff09 \uff085\uff090
\uff086\uff091.212212221\u2026 \uff087\uff09 \uff088\uff090.15
\u65e0\u7406\u6570\u96c6\u5408{ \u2026 }\uff1b
\u6709\u7406\u6570\u96c6\u5408{ \u2026 }
27\u3001\u5316\u7b80\uff08\u6bcf\u5c0f\u98983\u5206 \u517112\u5206\uff09
\uff081\uff09\uff0e \uff082\uff09\uff0e
\uff083\uff09\uff0e \uff084\uff09\uff0e
28\u3001\u4f5c\u56fe\u9898\uff086\u5206\uff09
\u5982\u56fe\uff0c\u6b63\u65b9\u5f62\u7f51\u683c\u4e2d\u7684\u6bcf\u4e2a\u5c0f\u6b63\u65b9\u5f62\u8fb9\u957f\u90fd\u662f1\uff0c\u4efb\u610f\u8fde\u7ed3\u8fd9\u4e9b\u5c0f\u6b63\u65b9\u5f62\u7684\u9876\u70b9\uff0c\u53ef\u5f97\u5230\u4e00\u4e9b\u7ebf\u6bb5\u3002\u8bf7\u5728\u56fe\u4e2d\u753b\u51fa \u8fd9\u6837\u7684\u7ebf\u6bb5\u3002
29\u3001\uff085\u5206\uff09\u7528\u5927\u5c0f\u5b8c\u5168\u76f8\u540c\u7684250\u5757\u6b63\u65b9\u5f62\u5730\u677f\u7816\u94fa\u4e00\u95f4\u9762\u79ef\u4e3a40\u5e73\u65b9\u7c73\u7684\u5ba2\u5385\uff0c\u8bf7\u95ee\u6bcf\u4e00\u5757\u6b63\u65b9\u5f62\u5730\u677f\u7816\u7684\u8fb9\u957f\u662f\u591a\u5c11\u5398\u7c73\uff1f
30\u3001\uff085\u5206\uff09\u4e00\u9ad8\u5c42\u4f4f\u5b85\u5927\u53a6\u53d1\u751f\u706b\u707e\uff0c\u6d88\u9632\u8f66\u7acb\u5373\u8d76\u5230\u8ddd\u5927\u53a69\u7c73\u5904\uff08\u8f66\u5c3e\u5230\u5927\u53a6\u5899\u9762\uff09\uff0c\u5347\u8d77\u4e91\u68af\u5230\u706b\u707e\u7a97\u53e3\u5982\u56fe\uff0c\u5df2\u77e5\u4e91\u68af\u957f15\u7c73\uff0c\u4e91\u68af\u5e95\u90e8\u8ddd\u5730\u97622\u7c73\uff0c\u95ee\u53d1\u751f\u706b\u707e\u7684\u4f4f\u6237\u7a97\u53e3\u8ddd\u79bb\u5730\u9762\u591a\u9ad8\uff1f
31\u3001\uff086\u5206\uff09\u5c0f\u73cd\u60f3\u51fa\u4e86\u4e00\u4e2a\u6d4b\u91cf\u6c60\u5858\u5bbd\u5ea6AB\u7684\u65b9\u6cd5\uff1a\u5148\u5206\u522b\u4ece\u6c60\u5858\u7684\u4e24\u7aefA\u3001B\u5f15\u4e24\u6761\u76f4\u7ebfAC\u3001BC\u76f8\u4ea4\u4e8e\u70b9C\uff0c\u7136\u540e\u5728BC\u4e0a\u53d6\u4e24\u70b9E\u3001G\uff0c\u4f7fBE\uff1dCG\uff0c\u518d\u5206\u522b\u8fc7E\u3001G\u4f5cEF\u2016GH\u2016AB\uff0c\u4ea4AC\u4e8eF\u3001H\u3002\u6d4b\u91cf\u51faEF\uff1d10 m\uff0cGH\uff1d4 m\uff08\u5982\u56fe\uff09\uff0c\u4e8e\u662f\u5c0f\u73cd\u5c31\u5f97\u51fa\u4e86\u7ed3\u8bba\uff1a\u6c60\u5858\u7684\u5bbdAB\u4e3a14 m \u3002\u4f60\u8ba4\u4e3a\u5979\u8bf4\u7684\u5bf9\u5417\uff1f\u4e3a\u4ec0\u4e48\uff1f
32\u3001\uff085\u5206\uff09\u5df2\u77e5\u56db\u8fb9\u5f62ABCD\uff0c\u4ece\u4e0b\u5217\u6761\u4ef6\u4e2d\u4efb\u53d63\u4e2a\u6761\u4ef6\u7ec4\u5408\uff0c\u4f7f\u56db\u8fb9\u5f62ABCD\u4e3a\u77e9\u5f62\uff0c\u628a\u6240\u6709\u7684\u60c5\u51b5\u5199\u51fa\u6765\uff1a\uff08\u53ea\u586b\u5199\u5e8f\u53f7\u5373\u53ef\uff09
\uff081\uff09AB\u2016CD \uff082\uff09BC\u2016AD \uff083\uff09AB=CD \uff084\uff09\u2220A=\u2220C \uff085\uff09\u2220B=\u2220D
\uff086\uff09\u2220A=90 \uff087\uff09AC=BD \uff088\uff09\u2220B=90\uff089\uff09OA=OC \uff0810\uff09OB=OD
\u8bf7\u4f60\u5199\u51fa5\u7ec4 \u3001 \u3001 \u3001 \u3001 \u3002
33\u3001\uff087\u5206\uff09\u5c0f\u4e1c\u5728\u5b66\u4e60\u4e86 \u540e, \u8ba4\u4e3a \u4e5f\u6210\u7acb,\u56e0\u6b64\u4ed6\u8ba4\u4e3a\u4e00\u4e2a\u5316\u7b80\u8fc7\u7a0b: = \u662f\u6b63\u786e\u7684\u3002
\uff083\u5206\uff09\u4f60\u8ba4\u4e3a\u4ed6\u7684\u5316\u7b80\u5bf9\u5417?\u5982\u679c\u4e0d\u5bf9\uff0c\u8bf7\u5199\u51fa\u6b63\u786e\u7684\u5316\u7b80\u8fc7\u7a0b
\u4e00\uff0e\u586b\u7a7a\uff1a
1\uff0e64\u7684\u5e73\u65b9\u6839\u662f______, \u7acb\u65b9\u6839\u662f__________.
2\uff0e\u82e5\u4e00\u4e2a\u591a\u8fb9\u5f62\u7684\u5185\u89d2\u548c\u662f\u5916\u89d2\u548c\u76845\u500d\uff0c\u5219\u8fd9\u4e2a\u591a\u8fb9\u5f62\u662f_________\u8fb9\u5f62\uff0c\u5176\u5185\u89d2\u548c\u4e3a________.
3.\u6570\u636e6\u30018\u30019\u30018\u300110\u30018\u30019\u30016\u7684\u5e73\u5747\u6570\u4e3a_________,\u4f17\u6570\u662f______,\u4e2d\u4f4d\u6570\u662f___________.
4\uff0e\u82e5\u6b63\u6bd4\u4f8b\u51fd\u6570\u3001\u4e00\u6b21\u51fd\u6570y=kx+2\u90fd\u7ecf\u8fc7\u70b9\uff08-2\uff0c-4\uff09\uff0c\u5219\u6b63\u6bd4\u4f8b\u51fd\u6570\u4e3a___________________,\u4e00\u6b21\u51fd\u6570\u4e3a___________________\u3002
5\uff0e\u5df2\u77e5\u4e8c\u5143\u4e00\u6b21\u65b9\u7a0b\u7ec4{ \uff0c\u5219x-y=_________,x+y=__________.
6. 1- \u7684\u76f8\u53cd\u6570\u662f__________, \u7edd\u5bf9\u503c\u662f_______________.
7\u3001\u5982\u53f3\u56fe\uff0c\u76f4\u7ebfL\u4e00\u6b21\u51fd\u6570y=kx+b\u7684\u56fe\u8c61\uff0c\u5219b= \uff0c
k= \uff0c\u5f53x_____________\u65f6\uff0cy<0\u3002
8\uff0e\u83f1\u5f62\u7684\u4e00\u6761\u5bf9\u89d2\u7ebf\u4e0e\u4e00\u6761\u8fb9\u957f\u76f8\u7b49\uff0c\u5219\u8fd9\u4e2a\u83f1\u5f62\u76f8\u90bb\u4e24
\u4e2a\u5185\u89d2\u7684\u5ea6\u6570\u5206\u522b\u4e3a________________________\u3002
9\uff0e\u80fd\u591f\u94fa\u6ee1\u5730\u9762\u7684\u6b63\u591a\u8fb9\u5f62\u53ea\u6709________________________________________.
10\uff0e\u70b9P\uff082\uff0c-3\uff09\u5230x\u8f74\u7684\u8ddd\u79bb\u4e3a____________\u4e2a\u5355\u4f4d\uff0c\u5b83\u5173\u4e8ey\u8f74\u5bf9\u79f0\u7684\u70b9\u5750\u6807\u4e3a______________________\u3002
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12\uff0eRt\u25b3ABC\u4e2d\uff0c\u2220C=90º,AC=25,BC=60,\u5219\u659c\u8fb9AB\u7684\u957f\u4e3a________\u3002
\u4e8c\uff0e\u9009\u62e9\u9898\uff1a
1\uff0e-27\u7684\u7acb\u65b9\u6839\u4e0e9\u7684\u5e73\u65b9\u6839\u7684\u548c\u662f\uff1a \uff08 \uff09
A\uff0e 0 B . 6 C . -6 D . 0\u6216-6
2\uff0e\u5df2\u77e5\u83f1\u5f62\u7684\u5468\u957f\u4e3a9.6\uff0c\u4e24\u4e2a\u90bb\u89d2\u7684\u6bd4\u662f1\uff1a2\uff0c\u8fd9\u4e2a\u83f1\u5f62\u7684\u8f83\u77ed\u5bf9\u89d2\u7ebf\u7684\u957f\u662f\uff08 \uff09
A\uff0e 2.1 B . 2.2 C . 2.3 D . 2.4
3\uff0e\u4e0b\u5217\u8bf4\u6cd5\u4e2d\u6b63\u786e\u7684\u662f \uff08 \uff09
A\uff0e \u56db\u8fb9\u76f8\u7b49\u7684\u56db\u8fb9\u5f62\u662f\u6b63\u65b9\u5f62 B . \u56db\u4e2a\u5185\u89d2\u76f8\u7b49\u7684\u56db\u8fb9\u5f62\u662f\u6b63\u65b9\u5f62 C . \u5bf9\u89d2\u7ebf\u5782\u76f4\u7684\u5e73\u884c\u56db\u8fb9\u5f62\u662f\u6b63\u65b9\u5f62 D . \u5bf9\u89d2\u7ebf\u5782\u76f4\u7684\u77e9\u5f62\u662f\u6b63\u65b9\u5f62
4\uff0e\u4e00\u6b21\u51fd\u6570y=-x+2\u7684\u56fe\u8c61\u4e0e\u4e24\u6761\u5750\u6807\u8f74\u6240\u56f4\u6210\u7684\u4e09\u89d2\u5f62\u7684\u9762\u79ef\u4e3a\uff08 \uff09 A\uff0e1 B . 2 C . 3 D . 4
5\uff0e\u5728\u4e0b\u5217\u65b9\u7a0b\u7ec4\u4e2d\uff0c\u4ee5{ \u4e3a\u89e3\u7684\u662f \uff08 \uff09
A\uff0e{ B .{ C .{ D . {
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A\uff0e 30o B . 45o C . 60o D . 75o
7\uff0e\u4e00\u4e2a\u6247\u5f62 \uff08 \uff09
A\uff0e \u662f\u8f74\u5bf9\u79f0\u56fe\u5f62\uff0c\u4f46\u4e0d\u662f\u65cb\u8f6c\u5bf9\u79f0\u56fe\u5f62
B . \u662f\u65cb\u8f6c\u5bf9\u79f0\u56fe\u5f62\uff0c\u4f46\u4e0d\u662f\u8f74\u5bf9\u79f0\u56fe\u5f62
C . \u662f\u8f74\u5bf9\u79f0\u56fe\u5f62\uff0c\u4e5f\u662f\u65cb\u8f6c\u5bf9\u79f0\u56fe\u5f62
D . \u65e2\u4e0d\u662f\u8f74\u5bf9\u79f0\u56fe\u5f62\uff0c\u4e5f\u4e0d\u662f\u65cb\u8f6c\u5bf9\u79f0\u56fe\u5f62
8\uff0e\u4e0b\u5217\u4e94\u4e2a\u547d\u9898\uff1a
\u2460 0\u662f\u6700\u5c0f\u7684\u5b9e\u6570\uff1b
\u2461 \u6570\u8f74\u4e0a\u7684\u6240\u6709\u7684\u70b9\u90fd\u8868\u793a\u5b9e\u6570\uff1b
\u2462 \u65e0\u7406\u6570\u5c31\u662f\u5e26\u6839\u53f7\u7684\u6570\uff1b
\u2463 \u4e00\u4e2a\u5b9e\u6570\u7684\u5e73\u65b9\u6839\u6709\u4e24\u4e2a\uff0c\u5b83\u4eec\u662f\u4e92\u4e3a\u76f8\u53cd\u6570\uff1b
\u2464 \u7684\u7acb\u65b9\u6839\u662f\u00b1 \u3002
\u5176\u4e2d\u6b63\u786e\u7684\u4e2a\u6570\u662f\uff08 \uff09\u3002
A\uff0e 0 B . 1 C . 4 D . 3
9\uff0e\u5982\u4e0b\u56fe\uff0c\u540c\u4e00\u5750\u6807\u7cfb\u4e2d\uff0c\u76f4\u7ebfl1: y=2x-3\u548cl2: y=-3x+2\u7684\u56fe\u8c61\u5927\u81f4\u53ef\u80fd\u662f\uff08 \uff09\u3002
A B C D
10\uff0e\u5e73\u884c\u56db\u8fb9\u5f62\u5185\u89d2\u5e73\u5206\u7ebf\u56f4\u6210\uff08 \uff09
A\uff0e \u83f1\u5f62 B . \u5e73\u884c\u56db\u8fb9\u5f62 C . \u77e9\u5f62 D . \u6b63\u65b9\u5f62
11\u3001\u4e00\u6b21\u51fd\u6570y=-2x-3\u4e0d\u7ecf\u8fc7\uff08 \uff09
\uff08A\uff09 \u7b2c\u4e00\u8c61\u9650 (B) \u7b2c\u4e8c\u8c61\u9650 (C) \u7b2c\u4e09\u8c61\u9650 (D) \u7b2c\u56db\u8c61\u9650
12\uff0eRt\u25b3ABC\u4e2d\uff0c\u2220B=90º,AC=5,BC=4,\u5219\u4e09\u89d2\u5f62\u7684\u5468\u957f\u4e3a\uff08 \uff09\u3002
A\uff0e10 B\uff0e11 C\uff0e12 D\uff0e13
\u4e09\uff0e\u89e3\u7b54\u9898\uff1a
1\uff0e \u5316\u7b80\u8ba1\u7b97\uff1a
\uff081\uff09 - +2 \uff082\uff09
\uff083\uff092a (4) (
2.\u89e3\u65b9\u7a0b\u7ec4\uff1a
\uff081\uff09{ \uff082\uff09{
\uff083\uff09\uff5b \uff084\uff09{
3\uff0e\u5982\u56fe\uff0c\u8ba9\u5b57\u6bcd\u201cF\u201d\u7ed5\u70b9O\u9006\u65f6\u9488\u65cb\u8f6c90o\uff0c\u4f5c\u51fa\u65cb\u8f6c\u540e\u7684\u56fe\u6848\u3002
. O
4\uff0e\u67d0\u517b\u6b96\u573a\u6709\u732a\u3001\u9e2d\u82e5\u5e72\u53ea\uff0c\u5171\u6709\u5934330\u4e2a\uff0c\u811a816\u53ea\uff0c\u6c42\u8be5\u517b\u6b96\u573a\u517b\u6b96\u732a\u3001\u9e2d\u5404\u591a\u5c11\u53ea\uff1f
5\uff0e \u5df2\u77e5\u6b63\u6bd4\u4f8b\u51fd\u6570\u7ecf\u8fc7\uff081\uff09\u7b2c\u4e8c\u3001\u56db\u8c61\u9650\uff0c\u5219k\u5982\u4f55\uff1f\uff083\u5206\uff09
\uff082\uff09\u70b9\uff082\uff0c1\uff09\uff0c\u6c42\u5b83\u7684\u8868\u8fbe\u5f0f\u3002\uff084\u5206\uff09
6.\u25b3ABC\u4e2d\uff0c\u2220C=90o\uff0cc=2,(a+b)2 =6\uff0c\u6c42\u6b64\u4e09\u89d2\u5f62\u7684\u9762\u79ef\u3002
7\uff0e\u6839\u636e\u4e0b\u56fe\uff0c\u8bf4\u660e\u56fe\u5f622\u30013\u30014\u30015\u30016\u5206\u522b\u53ef\u4ee5\u770b\u6210\u662f\u7531\u56fe\u5f621\u7ecf\u8fc7\u56fe\u5f62\u7684\u4ec0\u4e48\u8fd0\u52a8\u800c\u5f97\u5230\u7684\u3002\u82e5\u662f\u8f74\u5bf9\u79f0\uff0c\u8bf7\u6307\u51fa\u5bf9\u79f0\u8f74\uff1b\u82e5\u662f\u5e73\u79fb\uff0c\u8bf7\u6307\u51fa\u5e73\u79fb\u7684\u65b9\u5411\u4e0e\u8ddd\u79bb\uff1b\u82e5\u662f\u65cb\u8f6c\uff0c\u8bf7\u6307\u51fa\u65cb\u8f6c\u7684\u4e2d\u5fc3\u4e0e\u65cb\u8f6c\u7684\u89d2\u5ea6\uff1b\u82e5\u662f\u51e0\u4e2a\u8fd0\u52a8\u7684\u7ed3\u679c\uff0c\u8bf7\u52a0\u4ee5\u8bf4\u660e\u3002
8\uff0e\u8bf7\u7528\u4e24\u79cd\u8fb9\u957f\u76f8\u540c\u7684\u6b63\u591a\u8fb9\u5f62\u8fdb\u884c\u5bc6\u94fa\u3002
\u7b54\u6848
\u4e00\uff0e\uff081\uff09\u00b18 \uff0c4\uff082\uff0912\uff0c1800o \uff083\uff098\uff0c8\uff0c9 \uff084\uff09y=2x,y=3x+2 (5)-1,5
(6) -1, -1 (7)3, , >2 (8)60o,120o (9)\u6b63\u4e09\u89d2\u5f62\uff0c\u6b63\u65b9\u5f62\uff0c\u6b63\u516d\u8fb9\u5f62
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\u4e09\uff0e1.\uff081\uff09 \uff082\uff092- \uff083\uff0912a3 (4)4
2.(1) \uff5b (2) \uff5b (3) \uff5b (4) \uff5b
4.\u732a78\u53ea\uff0c\u9e2d252\u53ea\u30025\uff0e\uff081\uff09k<0 (2)y= x
6. 7. \u56fe2\uff1a\u6c34\u5e73\u7ffb\u8f6c\uff0c\u518d\u7ad6\u76f4\u7ffb\u8f6c\uff0c\u6700\u540e\u518d\u5e73\u79fb\uff1b\u56fe3\uff1a\u5e73\u79fb\uff1b \u56fe4\uff1a\u7ad6\u76f4\u7ffb\u8f6c\uff1b\u56fe5\uff1a\u6c34\u5e73\u7ffb\u8f6c\u3001\u5e73\u79fb\uff1b \u56fe6\uff1a\u7ad6\u76f4\u7ffb\u8f6c\uff0c\u5e73\u79fb\u3002
\u6c42\u516b\u5e74\u7ea7\u4e0a\u518c\u4eba\u6559\u7248\u6570\u5b66\u8bd5\u9898+\u7b54\u6848 2010-2-18 13:35 \u63d0\u95ee\u8005: \u6620\u5e94 | \u60ac\u8d4f\u5206:15 \u9898\u578b\u8981\u4e2d\u7b49\u96be\u5ea6\u7684,\u8981\u8d34\u5408\u77e5\u8bc6\u70b9,\u8c22\u8c22 \u6211\u6765\u5e2e\u4ed6\u89e3\u7b54 ...
1.在等腰三角形ABC中，AB=AC=10cm，BC=12cm，求BC边上的高AD的长。
解：
连结AD.
因为等腰三角形的底边的高、中线和顶角的角平分线是合一的
所以BD=6.又∠BDA=90°
由勾股定理得出AD的高为8
2.直角三角形两直角边的长分别为5cm和12cm，求直角三角形斜边上的高。
解：由题知△ABC是Rt△
∵△ABC两直角边分别为5、12
∴由勾股定理得斜边长为√（根号）5^2+12^2
=√169
=13(cm)
用面积法，该三角形面积为（5*12）/2＝30（cm^2)
所以斜边上的高为（30*2）/13＝60/13（cm)
答：斜边上的高为60/13cm。
3、
一辆汽车以16千米每小时的速度离开甲城市，向东南方向行驶。另一辆车在同时以十二千米每小时的速度离开甲城市向西南方向行驶，他们离开城市3小时候相距多远？
解：
做个坐标轴，东南方向就是45度，且西南也是45°，
那么两个加起来是90°
可用勾股定理可得：16*3=48km/h 20*3=60km/h
则他们相距=根号下48+根号下60=6倍根号3
我是八年级的，如果你要我给的题目的话，就加我百度号，在上面留言，我发给你，好吗
出几道2次根式如:X"+7X+3=0用公式法,答案,X1=(-7+根号37)/2或,X2=(-7-根号37)/2
网上应该能搜到的
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绛旓細1銆佷竴鍒楄揣杞﹂暱600绫筹紝浠54鍗冪背/鏃剁殑閫熷害鍚戜笢鍖閫熻椹讹紝涓鍒楀杞﹂暱400绫筹紝浠72鍗冪背/鏃剁殑閫熷害鍦ㄥ彟涓骞宠杞ㄩ亾涓婂悜涓滃寑閫熻椹讹紝璇曢棶瀹㈣溅瑕佽秴杩囪揣杞︽墍闇鐨勬渶鐭椂闂存槸澶氬皯绉掞紵2銆佸鏍＄敤涓绗旈挶涔板鍝侊紝鑻ヤ互1鏀挗绗斿拰2鏈棩璁版湰涓轰竴浠藉鍝侊紝鍒欏彲涔60浠藉鍝侊紱鑻ヤ互1鏀挗绗斿拰3鏈棩璁版湰涓轰竴浠藉鍝侊紝鍒欏彲涔50...
绛旓細涓夈佽В绛旈(鍏46鍒) 19.(6鍒)涓涓嚫澶氳竟褰,闄や簡涓涓唴瑙掑,鍏朵綑鍚勫唴瑙掔殑鍜屼负2 750掳,姹傝繖涓杈瑰舰鐨勮竟鏁. 20.(6鍒)濡傚浘鎵绀,鍦ㄢ柍ABC涓,AB=AC,AC杈涓婄殑涓嚎鎶婁笁瑙掑舰鐨勫懆闀垮垎涓24 cm鍜30 cm鐨勪袱閮ㄥ垎,姹備笁瑙掑舰鍚勮竟鐨勯暱.21.(6鍒)鏈変汉璇,鑷繁鐨勬瀛愬ぇ,涓姝ヨ兘璧板洓绫冲,浣犵浉淇″悧?鐢ㄤ綘瀛﹁繃鐨勬暟...
绛旓細4锛3x-(2x-4y-6x)+3(-2z+2y)锛5锛(-x2+4+3x4-x3)-(x2+2x-x4-5)锛6锛庤嫢A=5a2-2ab+3b2锛孊=-2b2+3ab-a2锛岃绠桝+B锛7锛5m2n+(-2m2n)+2mn2-(+m2n)锛8锛2(x2-2xy+y2-3)+(-x2+y2)-(x2+2xy+y2)锛9锛2(a2-ab-b2)-3(4a-2b)+2(7a2-4ab+b2)锛10锛姹(3x...
绛旓細锛2锛夋澶栵紝浣犺繕鑳芥壘鍒版洿鐪侀挶鐨勮喘涔版柟妗堝悧锛燂紙鍐欏嚭鏂规鍗冲彲锛3.濡傚浘锛屽湪鐭╁舰ABCD涓紝AB=6锛孊C=8锛屽皢鐭╁舰ABCD娌緾E鎶樺彔鍚庯紝浣跨偣D鎭板ソ钀藉湪瀵硅绾緼C涓婄殑鐐笷澶锛1锛夋眰EF鐨勯暱锛2锛夋眰姊舰ABCE鐨勯潰绉 4.鐢层佷箼涓や釜宸ョ▼闃熷叡鍚屽畬鎴愪竴椤瑰伐绋涔欓槦鍏堝崟鐙仛...
绛旓細鎷滄墭鍟,鎶婂師鏉ュ啓杩囩殑涓浜鍏勾绾т笂鐨搴旂敤棰樺強绛旀鍐欎笅鏉,鎬ョ潃浜や綔涓氬憿銆30閬撳氨鍙互浜!!鎷滄墭鍟!!... 鎷滄墭鍟,鎶婂師鏉ュ啓杩囩殑涓浜涘叓骞寸骇涓婄殑搴旂敤棰樺強绛旀鍐欎笅鏉,鎬ョ潃浜や綔涓氬憿銆30閬撳氨鍙互浜!!鎷滄墭鍟!! 灞曞紑 4涓洖绛 #鐑# 浜屾鎰熸煋鏂板啝鍚庝細鍙戠敓浠涔?
绛旓細浜烘暀鐗鍏勾绾т笂鍐屾暟瀛鏈熸湯璇曞嵎锛氫竴銆侀夋嫨棰橈紙姣忓皬棰3鍒嗭紝鍏30鍒嗭級锛1锛庝笅鍒楄繍绠楁纭殑鏄紙 锛堿锛 = -2 B锛 =3 C锛 D锛 =3 2锛庤绠楋紙ab2锛3鐨勭粨鏋滄槸锛 锛堿锛巃b5 B锛巃b6 C锛巃3b5 D锛巃3b6 3锛庤嫢寮忓瓙 鍦ㄥ疄鏁拌寖鍥村唴鏈夋剰涔夛紝鍒檟鐨勫彇鍊艰寖鍥存槸锛 锛堿锛巟>5...
绛旓細鍒嗘暟璁＄畻棰 17/32 鈥 3/4 脳 9/24 3 脳 2/9 + 1/3 5/7 脳 3/25 + 3/7 3/14 脳脳 2/3 + 1/6 1/5 脳 2/3 + 5/6 9/22 + 1/11 梅 1/2 5/3 脳 11/5 + 4/3 45 脳 2/3 + 1/3 脳 15 7/19 + 12/19 脳 5/6 1/4 + 3/4 梅 2/3 8/7 脳 21/...
绛旓細璇佹槑1锛氳繃M浣淢N鈯D浜D浜嶯 鈭礛D骞冲垎鈭燗DC 鈭碝A=MN 鈭礛A=MB 鈭碝N=MB 鈭碈M骞冲垎鈭燘CD 璇佹槑2锛氳繃P浣淧X鈯D浜嶺,PY鈯E浜嶻锛孭Z鈯C浜嶼 鈭礏P骞冲垎鈭燚BC,鈭碢X=PZ,鈭礟C骞冲垎鈭燘CE,鈭碢Y=PZ 鈭碢X=PY 鈭寸偣P鍦ㄢ垹BAC骞冲垎绾涓 鈭碘垹A=180掳-(鈭燗BC+鈭燗CB)鈭燗BC=180掳-鈭燚BC,鈭燗CB=180掳-...
绛旓細鎯宠鎻愰珮鏁板鐨勬垚缁,闄や簡涓婅璁ょ湡鍚,鏇撮噸瑕佺殑鏄鍋氬熀纭鍗曞厓娴嬭瘯棰樼洰銆備笅闈㈢敱鎴戜负浣犳暣鐞嗙殑浜烘暀鐗鍏勾绾ф暟瀛︿笂鍐绗簩鍗曞厓娴嬭瘯鍗,甯屾湜瀵瑰ぇ瀹舵湁甯姪! 浜烘暀鐗堝叓骞寸骇鏁板涓婂唽绗簩鍗曞厓娴嬭瘯鍗 涓銆侀夋嫨棰 1.姝ｄ笁瑙掑舰鈻矨BC鐨勮竟闀夸负3,渚濇鍦ㄨ竟AB銆丅C銆丆A涓婂彇鐐笰1銆丅1銆丆1,浣緼A1=BB1=CC1=1,鍒欌柍A1B1C1鐨勯潰绉槸( ...
