寻找数学题
\u5bfb\u627e\u6570\u5b66\u9898\u301020\u9053\u4e8c\u5143\u4e00\u6b21\u65b9\u7a0b\u7ec4\u3011
1\uff0ex\uff0d2y\uff1d3\uff0c2x\uff0by\uff1d\uff0d1\uff08x\uff1d1\uff0f5\uff0cy\uff1d\uff0d7\uff0f5\uff09
2\uff0e2x\uff0dy\uff1d5\uff0c3x\uff0b4y\uff1d2\uff08x\uff1d2\uff0cy\uff1d\uff0d1\uff09
3\uff0ex\uff0dy\uff1d1\uff0c2x\uff0by\uff1d\uff0d4\uff08x\uff1d\uff0d1\uff0cy\uff1d\uff0d2\uff09
4\uff0e3x\uff0dy\uff1d5\uff0c5x\uff0b2y\uff1d12\uff08x\uff1d2\uff0cy\uff1d1\uff09
5\uff0e3x\uff0b2y\uff1d5\uff0c2x\uff0b5y\uff1d7\uff08x\uff1d1\uff0cy\uff1d1\uff09
6\uff0e0\uff0e3x\uff0b0\uff0e2y\uff1d1\uff0c0\uff0e1x\uff0b0\uff0e5y\uff1d1\uff0e2\uff08x\uff1d2\uff0cy\uff1d2
7\uff0ex\uff0by\uff1d39\uff0c2x\uff0b4y\uff1d100\uff08x\uff1d28\uff0cy\uff1d11\uff09
8\uff0e3x\uff0b4y\uff1d22\uff0c4x\uff0dy\uff0d4\uff1d0\uff08x\uff1d2\uff0cy\uff1d4\uff09
9\uff0e3x\uff0d4y\uff1d8\uff0cx\uff0b4y\uff1d4\uff08x\uff1d3\uff0cy\uff1d1\uff0f4\uff09
10\uff0e3\uff08x\uff0d1\uff09\uff1d4\uff08y\uff0d4\uff09\uff0c5\uff08y\uff0d1\uff09\uff1d3\uff08x\uff0b5\uff09
\uff08x\uff1d5\uff0cy\uff1d7\uff09
11\uff0e3x\uff0b2y\uff1d4\uff0c5x\uff0d4y\uff1d14\uff08x\uff1d2\uff0cy\uff1d\uff0d1\uff09
12\uff0e5x\uff0d2y\uff1d1\uff0c6x\uff0by\uff1d8\uff08x\uff1d1\uff0cy\uff1d2\uff09
13\uff0ex\uff0dy\uff1d3\uff0c3x\uff0d8y\uff1d14\uff08x\uff1d2\uff0cy\uff1d\uff0d1\uff09
14\uff0e3x\uff0b4y\uff1d16\uff0c5x\uff0d6y\uff1d33\uff08x\uff1d6\uff0cy\uff1d\uff0d0\uff0e5\uff09
15\uff0ey\uff1dx\uff0b3\uff0c7x\uff0b5y\uff1d9\uff08x\uff1d\uff0d0\uff0e5\uff0cy\uff1d2\uff0e5\uff09
16\uff0e3s\uff0dt\uff1d5\uff0c5s\uff0b2t\uff1d15\uff08s\uff1d25\uff0f11\uff0ct\uff1d20\uff0f11\uff09
17\uff0e3x\uff0b4y\uff1d16\uff0c5x\uff0d6y\uff1d33\uff08x\uff1d6\uff0cy\uff1d\uff0d1\uff0f2\uff09
18\uff0e3u\uff0b2t\uff1d7\uff0c6u\uff0d2t\uff1d11\uff08u\uff1d2\uff0ct\uff1d1\uff0f2\uff09
19\uff0e2a\uff0bb\uff1d3\uff0c3a\uff0bb\uff1d4\uff08a\uff1d1\uff0cb\uff1d1\uff09
20\uff0e2x\uff0d5y\uff1d\uff0d3\uff0c\uff0d4x\uff0by\uff1d\uff0d3\uff08x\uff1d1\uff0cy\uff1d1\uff09
\u301020\u9053\u4e00\u5143\u4e00\u6b21\u4e0d\u7b49\u6570\u7ec4\u3011
1.0.5x\uff0d2\uff1c3\uff08x\uff1c10\uff09
2\uff0e5\uff0bx\uff1e2x\uff0b6\uff0e5\uff08x\uff1c\uff0d1\uff0e5\uff09
3\uff0e0\uff0e5x\uff1c1\uff0f3\uff08x\uff0d1\uff09\uff08x\uff1e\uff0d2\uff09
4\uff0e2\uff0d0\uff0e2x\uff1e0\uff0e3\uff0d4\uff08x\uff1c\uff0d12\uff09
5.{5x-3>x-4 \uff0c1+2/3-x=1\uff09
6.x-2(x-1)x \uff08-1<=X<5\uff09
7.(3x-1)/4>3\uff0c(3x-1)/4<=7\uff0813/3<X<=29/3\uff09
8.2x-3>0 4-3x3/2 \uff09
9.2-5x2x-1\uff08-1/2<=X<1\uff09
10.3-(a-5)>3a-4 (a<3)
11. -5/6x+31+1/3)
12.3-4[1-3(2-x)] => 59 (x<=-3)
13.6\uff081-1/3x\uff09> 2+1/5\uff0810\uff0b15x\uff09 (x=>-2)
14.7/6x-13>3/3x-8 (x>-3)
15.4x-10-4)
16. x-2-2/2-x>x/3-2 (x>2)
17. x-6/2-x-4/3x-3 =>0 \uff08x<=4\uff09
18\uff0e2x\uff0d3\uff1c6\uff0dx\uff0c1\uff0d4x\uff1c5x\uff0d2\uff081\uff0f3\uff1cx\uff1c3\uff09
19\uff0e2x\uff1c1\uff0dx\uff1c5\uff0bx\uff08\uff0d2\uff1cx\uff1c3\uff09
20\uff0e1\uff1c0\uff0e5x\uff0d4\uff1c5\uff0f3\uff0810\uff1cx\uff1c34\uff0f3\uff09
\u301020\u9053\u51e0\u4f55\u63a8\u7406\u9898\u3011
\u8fd9\u4e2a\u6211\u5f04\u4e0d\u4e86
\u56fe\u5f88\u591a\u5b57\u5f88\u591a
\u56fe\u53d1\u5e03\u4e0a\u6765
\u5b57\u4f1a\u6253\u5230\u624b\u62bd\u7ecf\uff08\u539f\u8c05\u6211\u7684\u61d2\u60f0\u54e6\uff5e\uff09
\u522b\u7684\u9898\u76ee\u5c3d\u529b\u5e2e\u4f60\uff01
\u301010\u9053\u4e8c\u5143\u4e00\u6b21\u65b9\u7a0b\u89e3\u5e94\u7528\u9898\u3011
1\uff0e\u7532\u4e59\u4e8c\u4eba\u5404\u6709\u4e66\u82e5\u5e72\u672c\uff0c\u5982\u679c\u7532\u9001\u4e5910\u672c\uff0c\u90a3\u4e48\u4e8c\u4eba\u6570\u76f8\u7b49\uff0c\u5982\u679c\u4e59\u9001\u753210\u672c\uff0c\u90a3\u4e48\u7532\u7684\u4e66\u5c31\u662f\u4e59\u7684\u4e66\u76842\u500d\uff0c\u95ee\u5404\u6709\u591a\u5c11\u672c\u4e66
\u89e3\uff1a\u7532x\u4e59y
x\uff0d10\uff1dy\uff0b10
2\uff08y\uff0d10\uff09\uff1dx\uff0b10
x\uff1d70\uff0cy\uff1d50
2\uff0e\u7532\u4e59\u4e24\u5730\u76f8\u8ddd21\u5343\u7c73\uff0c\u5982\u679c\u76f8\u5411\u800c\u884c1\u5c0f\u65f6\u76f8\u9047\uff0c\u5982\u679c\u540c\u5411\u800c\u884c7\u5c0f\u65f6\u4e59\u8ffd\u4e0a\u7532\u3002\u95ee\u7532\u4e59\u901f\u5ea6
\u89e3\uff1a\u7532xkm\uff0fh\uff0c\u4e59y
\uff08x\uff0by\uff09\uff1d21
7\uff08y\uff0dx\uff09\uff1d21
x\uff1d9\uff0cy\uff1d12
3.\u4e00\u4e2a\u957f\u65b9\u5f62\uff0c\u628a\u957f\u51cf\u5c113cm\u5bbd\u589e\u52a02cm\u5c31\u6210\u4e86\u6b63\u65b9\u5f62\uff0c\u4e142\u56fe\u5f62\u9762\u79ef\u76f8\u7b49\uff0c\u7403\u957f\u548c\u5bbd\u3002
\u89e3\uff1a\u957fx\u5bbdy
x\uff0d3\uff1dy\uff0b2
xy\uff1d\uff08x\uff0d3\uff09\uff08y\uff0b2\uff09
x\uff1d9\uff0cy\uff1d4
4\uff0e4\u8f86\u5c0f\u8f66\u548c5\u8f86\u5927\u8f66\u5ba2\u8fd0\u8d27\u726927t\uff0c6\u8f86\u5c0f\u8f66\u548c10\u8f86\u5927\u8f66\u5ba2\u8fd0\u8d27\u726951t\uff0e\u5927\u8f66\u5c0f\u8f66\u6bcf\u8f86\u5206\u522b\u53ef\u4ee5\u4e91\u8d27\u7269\u591a\u5c11t\uff1f
\u89e3\uff1a\u5927x\u5c0fy
4x\uff0b5y\uff1d27
6x\uff0b10y\uff1d51
x\uff1d1\uff0e5\uff0cy\uff1d4\uff0e5
5\uff0e150\u4eba\u8003\u8bd5\uff0c\u5e73\u5747\u520655\uff0c\u53ca\u683c\u751f\u5e73\u5747\u520677\uff0c\u4e0d\u53ca\u683c\u7684\u5e73\u5747\u520647\u3002\u95ee\u53ca\u683c\u5e03\u51e0\u4e2a\u5404\u6709\u591a\u5c11\u4eba\uff1f
\u89e3\uff1a\u53ca\u683cx\u4e0d\u53ca\u683cy
x\uff0by\uff1d150
77x\uff0b47y\uff1d55\uff0a150
x\uff1d110\uff0cy\uff1d40
6.\u8f66\u95f4\u5171\u670990\u4eba\uff0c\u4e00\u5929\u6bcf\u4eba\u53ef\u505a12\u4e2a\u7532\u96f6\u4ef6\u621615\u4e2a\u4e59\u96f6\u4ef6\uff0c\u600e\u6837\u5b89\u6392\u624d\u53ef\u8ba9\u96f6\u4ef6\u6b63\u597d\u914d\u5957\uff081\u7532\u914d1\u4e59\uff09
\u89e3\uff1ax\u4eba\u505a\u7532y\u4eba\u505a\u4e59
x\uff0by\uff1d90
12x\uff1d15y
x\uff1d50\uff0cy\uff1d40
7\uff0e\u6bcf3m\u5e03\u6599\u53ef\u4ee5\u505a\u4e0a\u88632\u4ef6\u6216\u88e4\u5b503\u6761\uff0c\u95ee600\u7c73\u5e03\u6599\u53ef\u4ee5\u505a\u51e0\u5957\uff1f\uff081\u88631\u88e41\u5957\uff09
\u89e3\uff1a\u8bbe\u505ax\u4ef6\u4e0a\u8863y\u4ef6\u88e4\u5b50
x\uff1dy
3\uff0f2x\uff0by\uff1d600
x\uff1d240\uff0cy\uff1d240\u53ef\u505a240\u5957
8.\u5317\u4eac\u548c\u4e0a\u6d77\u90fd\u6709\u67d0\u79cd\u4eea\u5668\u53ef\u4f9b\u5916\u5730\u4f7f\u7528\uff0c\u5176\u4e2d\u5317\u4eac\u53ef\u63d0\u4f9b10\u53f0\uff0c\u4e0a\u6d77\u53ef\u63d0\u4f9b4\u53f0\uff0c\u5df2\u77e5\u91cd\u5e86\u9700\u89818\u53f0\uff0c\u6b66\u6c49\u9700\u89816\u53f0\uff0c\u4ece\u5317\u4eac\u3001\u4e0a\u6d77\u5c06\u4eea\u5668\u8fd0\u5f80\u91cd\u5e86\u3001\u6b66\u6c49\u7684\u8d39\u7528\u5982\u4e0b\u8868\u6240\u793a\uff0c\u6709\u5173\u90e8\u95e8\u8ba1\u5212\u75288000\u5143\u8fd0\u9001\u8fd9\u4e9b\u4eea\u5668\uff0e\u8bf7\u4f60\u8bbe\u8ba1\u4e00\u79cd\u65b9\u6848\uff0c\u4f7f\u6b66\u6c49\u3001\u91cd\u5e86\u80fd\u5f97\u5230\u6240\u9700\u7684\u4eea\u5668\uff0c\u800c\u4e14\u8fd0\u8d39\u6b63\u597d\u591f\u7528\uff0c\u53c8\u80fd\u5426\u4fee\u6539\u65b9\u6848\uff0c\u964d\u4f4e\u6574\u4e2a\u8fd0\u8d39\uff1f
\u6b66\u6c49 \u91cd\u5e86
\u5317\u4eac 400 800
\u4e0a\u6d77 300 500
\u89e3\uff1a\u8bbe\u5317\u4eac\u8fd0\u5f80\u6b66\u6c49x\u53f0\uff0c\u4e0a\u6d77\u8fd0\u6b66\u6c49y\u53f0\uff0c\u7531\u9898\u610f\u5f97
x\uff0by\uff1d6
400x\uff0b800\uff0810\uff0dx\uff09\uff0b300y\uff0b500\uff084\uff0dy\uff09\uff1d8000
x\uff1d4\uff0cy\uff1d2
\u5373\u5317\u4eac\u8fd0\u5f80\u6b66\u6c494\u53f0\uff0c\u8fd0\u5f80\u91cd\u5e866\u53f0\uff0c\u4e0a\u6d77\u8fd0\u5f80\u6b66\u6c492\u53f0\uff0c\u8fd0\u5f80\u91cd\u5e862\u53f0\uff0e\u4ece\u8fd0\u8d39\u8868\u4e2d\u53ef\u4ee5\u770b\u51fa\u5317\u4eac\u8fd0\u5f80\u91cd\u5e86\u7684\u5355\u4f4d\u8fd0\u8d39\u6700\u9ad8\uff0c\u8003\u8651\u8fd0\u8d39\u51cf\u5c11\u5317\u4eac\u8fd0\u5f80\u91cd\u5e86\u7684\u53f0\u6570\uff0c\u5982\u5317\u4eac\u8fd0\u5f80\u91cd\u5e86\u7684\u53f0\u6570\u51cf\u5c11\u4e3a5\u53f0\uff0c\u6b64\u65f6\uff0c\u603b\u8fd0\u8d39\u4e3a
400\u00d75\uff0b800\u00d75\uff0b300\uff0b500\u00d73=7800\uff0c\u6bd4\u539f\u6765\u964d\u4f4e\u4e86200\u5143\uff0c\u8fd8\u53ef\u4ee5\u4f5c\u9002\u5f53\u8c03\u6574\uff0c\u7ee7\u7eed\u964d\u4f4e\u603b\u8fd0\u8d39\uff0e
10\uff0e\u5b66\u6821\u56fe\u4e66\u9986\u642c\u8fc1\uff0c\u516b\u5e74\u7ea7(3)\u73ed\u5b66\u751f\u53c2\u52a0\u4e86\u642c\u8fc1\u56fe\u4e66\u4e0e\u6574\u7406\u56fe\u4e66\u7684\u4efb\u52a1\uff0c\u5f00\u59cb\u65f6\uff0c\u53c2\u52a0\u642c\u8fd0\u56fe\u4e66\u7684\u4eba\u6570\u6bd4\u6574\u7406\u56fe\u4e66\u7684\u4eba\u6570\u76842\u500d\u5c114\u4eba\uff1b\u540e\u6765\uff0c\u4ece\u642c\u8fd0\u56fe\u4e66\u7684\u540c\u5b66\u4e2d\u8c03\u51fa4\u4eba\u53c2\u52a0\u6574\u7406\u56fe\u4e66\u5de5\u4f5c\uff0c\u8fd9\u65f6\u4e24\u90e8\u5206\u4eba\u6570\u76f8\u7b49\uff0c\u6c42\u642c\u4e66\u3001\u6574\u4e66\u5404\u591a\u5c11\u4eba\u3002
\u8bbe\u53c2\u52a0\u642c\u8fd0\u56fe\u4e66\u3001\u6574\u7406\u56fe\u4e66\u7684\u4eba\u6570\u5206\u522b\u4e3ax\uff0cy
x\uff0d2y\uff1d\uff0d4
x\uff0dy\uff1d8
x\uff1d20\uff0cy\uff1d12
\u301010\u9053\u4e00\u5143\u4e00\u6b21\u4e0d\u7b49\u5f0f\u89e3\u5e94\u7528\u9898\u3011
\u6211\u5df2\u7ecf\u6253\u5b57\u6253\u4e0d\u52a8\u4e86\u2026\u2026
\u6211\u5c31\u5728\u7f51\u4e0a\u5e2e\u4f60\u6311\u4e86\u51e0\u9053\u4e60\u9898\uff0c\u590d\u5236\u8fc7\u6765\u7684
\u6211\u5168\u90fd\u770b\u4e86\u4e00\u4e0b\uff0c\u90fd\u662f\u53ef\u4ee5\u7684\u9898\u76ee
\u2014\u2014\u5c31\u662f\u6ca1\u7b54\u6848\uff08\u4e0d\u8fc7\u4e0d\u662f\u5f88\u96be\u554a\u2026\u2026\u5982\u679c\u4e0d\u4f1a\u53d1\u6d88\u606f\u95ee\u6211\uff01\uff09
\u5e0c\u671b\u4f60\u80fd\u63a5\u53d7\u554a
\u7a0b\u5e94\u7528\u9898\uff1a
1\u3001\u4e00\u4e2a\u957f\u65b9\u5f62\u8db3\u7403\u573a\u7684\u957f\u4e3aX\u7c73\uff0c\u5bbd\u4e3a70\u7c73\uff0c\u5982\u679c\u5b83\u7684\u5468\u957f\u5927\u4e8e350\u7c73\uff0c\u9762\u79ef\u5c0f\u4e8e7650\u5e73\u65b9\u7c73\uff0c\u6c42X\u7684\u53d6\u503c\u8303\u56f4\uff0c\u5e76\u5224\u65ad\u8fd9\u4e2a\u7403\u573a\u662f\u5426\u53ef\u4ee5\u4f5c\u4e3a\u56fd\u9645\u8db3\u7403\u6bd4\u8d5b\uff08\u6ce8\uff1a\u7528\u4e8e\u56fd\u9645\u6bd4\u8d5b\u7684\u8db3\u7403\u573a\u7684\u957f\u5728100\u81f3110\u7c73\u4e4b\u95f4\uff0c\u5bbd\u572864\u81f375\u7c73\u4e4b\u95f4\u3002\uff09
2\u3001\u5728\u5bb9\u5668\u91cc\u670918\u6444\u793a\u5ea6\u7684\u6c346\u7acb\u65b9\u7c73\uff0c\u73b0\u5728\u8981\u628a8\u7acb\u65b9\u7c73\u7684\u6c34\u6ce8\u5165\u91cc\u9762\uff0c\u4f7f\u5bb9\u5668\u91cc\u6df7\u5408\u7684\u6c34\u7684\u6e29\u5ea6\u4e0d\u4f4e\u4e8e30\u6444\u793a\u5ea6\uff0c\u4e14\u4e0d\u9ad8\u4e8e36\u6444\u793a\u5ea6\uff0c\u6c42\u6ce8\u5165\u76848\u7acb\u65b9\u7c73\u7684\u6c34\u7684\u6e29\u5ea6\u5e94\u8be5\u5728\u4ec0\u4e48\u8303\u56f4\uff1f
3\u3001\u6709\u7ea2\u3001\u767d\u989c\u8272\u7684\u7403\u82e5\u5e72\u4e2a\uff0c\u5df2\u77e5\u767d\u7403\u7684\u4e2a\u6570\u6bd4\u7ea2\u7403\u5c11\uff0c\u4f46\u767d\u7403\u7684\u4e24\u500d\u6bd4\u7ea2\u7403\u591a\uff0c\u82e5\u628a\u6bcf\u4e00\u4e2a\u767d\u7403\u90fd\u8bb0\u4f5c\u65702\uff0c\u6bcf\u4e00\u4e2a\u7ea2\u7403\u90fd\u8bb0\u4f5c\u65703\uff0c\u5219\u603b\u6570\u4e3a60\uff0c\u6c42\u767d\u7403\u548c\u7ea2\u7403\u5404\u51e0\u4e2a\uff1f
4\u3001\u4e00\u6b21\u8003\u8bd5\u5171\u670925\u9053\u9009\u62e9\u9898\uff0c\u505a\u5bf9\u4e00\u9898\u5f974\u5206\uff0c\u505a\u9519\u4e00\u9898\u51cf2\u5206\uff0c\u4e0d\u505a\u5f970\u5206\uff0c\u82e5\u5c0f\u660e\u60f3\u786e\u4fdd\u8003\u8bd5\u6210\u7ee9\u572860\u5206\u4ee5\u4e0a\uff0c\u90a3\u4e48\uff0c\u4ed6\u81f3\u5c11\u505a\u5bf9X\u9898\uff0c\u5e94\u6ee1\u8db3\u7684\u4e0d\u7b49\u5f0f\u662f\u4ec0\u4e48\uff1f
5\u3001\u67d0\u516c\u53f8\u9700\u523b\u5f55\u4e00\u6279\u5149\u76d8\uff08\u603b\u6570\u4e0d\u8d85\u8fc7100\u5f20\uff09\uff0c\u82e5\u8bf7\u4e13\u4e1a\u516c\u53f8\u523b\u5f55\uff0c\u6bcf\u5f20\u970010\u5143\uff08\u5305\u62ec\u7a7a\u767d\u5149\u76d8\u8d39\uff09\uff1b\u82e5\u516c\u53f8\u81ea\u523b\uff0c\u9664\u8bbe\u5907\u79df\u7528\u8d39200\u5143\u4ee5\u5916\uff0c\u6bcf\u5f20\u8fd8\u9700\u6210\u672c5\u5143\uff08\u7a7a\u767d\u5149\u76d8\u8d39\uff09\u3002\u95ee\u523b\u5f55\u8fd9\u6279\u5149\u76d8\uff0c\u662f\u8bf7\u4e13\u5bb6\u516c\u53f8\u523b\u5f55\u8d39\u7528\u7701\uff0c\u8fd8\u662f\u81ea\u523b\u8d39\u7528\u7701\uff1f
6\u3001\u67d0\u6821\u529e\u5382\u751f\u4ea7\u4e86\u4e00\u6279\u65b0\u4ea7\u54c1\uff0c\u73b0\u6709\u4e24\u79cd\u9500\u552e\u65b9\u6848\uff0c\u65b9\u6848\u4e00\uff1a\u5728\u8fd9\u5b66\u671f\u5f00\u5b66\u65f6\u552e\u51fa\u8be5\u6279\u4ea7\u54c1\uff0c\u53ef\u83b7\u522930000\u5143\uff0c\u7136\u540e\u5c06\u8be5\u6279\u4ea7\u54c1\u7684\u6295\u5165\u8d44\u91d1\u548c\u5df2\u83b7\u522930000\u5143\u8fdb\u884c\u518d\u6295\u8d44\uff0c\u5230\u8fd9\u5b66\u671f\u7ed3\u675f\u65f6\u518d\u6295\u8d44\u53c8\u53ef\u83b7\u52294.8\uff05;\u65b9\u6848\u4e8c:\u5728\u8fd9\u5b66\u671f\u7ed3\u7ed3\u675f\u65f6\u552e\u51fa\u8be5\u6279\u4ea7\u54c1,\u53ef\u83b7\u522935940\u5143,\u4f46\u8981\u4ed8\u6295\u5165\u8d44\u91d1\u76840.2\uff05\u4f5c\u4fdd\u7ba1\u8d39\uff0c\u95ee\uff1a
\uff081\uff09\u5f53\u8be5\u6279\u4ea7\u54c1\u6295\u5165\u8d44\u91d1\u662f\u591a\u5c11\u5143\u65f6\uff0c\u65b9\u6848\u4e00\u548c\u65b9\u6848\u4e8c\u7684\u83b7\u5229\u662f\u4e00\u6837\u7684\uff1f
\uff082\uff09\u6309\u6240\u9700\u6295\u5165\u8d44\u91d1\u7684\u591a\u5c11\u8ba8\u8bba\u65b9\u6848\u4e00\u548c\u65b9\u6848\u4e8c\u54ea\u4e2a\u83b7\u5229\u591a\u3002
7\u3001\u67d0\u5bbe\u9986\u4e00\u697c\u5ba2\u623f\u6bd4\u4e8c\u697c\u5c115\u95f4\uff0c\u67d0\u65c5\u6e38\u56e2\u670948\u4eba\uff0c\u82e5\u5168\u90e8\u5b89\u6392\u5728\u4e00\u697c\uff0c\u6bcf\u95f44\u4eba\uff0c\u623f\u95f4\u4e0d\u591f\uff0c\u6bcf\u95f45\u4eba\uff0c\u623f\u95f4\u6ca1\u6709\u4f4f\u6ee1\uff1b\u82e5\u5b89\u6392\u4f4f\u5728\u4e8c\u697c\uff0c\u6bcf\u95f43\u4eba\u623f\u95f4\u4e0d\u591f\uff0c\u6bcf\u95f44\u4eba\uff0c\u6709\u623f\u95f4\u6ca1\u4f4f\u6ee1\uff0c\u95ee\u5bbe\u9986\u4e00\u697c\u6709\u5ba2\u623f\u51e0\u95f4\uff1f
8\u3001\u67d0\u6821\u51c6\u5907\u5728\u7532\u3001\u4e59\u4e24\u5bb6\u516c\u53f8\u4e3a\u6bd5\u4e1a\u73ed\u5b66\u751f\u5236\u4f5c\u4e00\u6279\u7eaa\u5ff5\u518c\uff0e\u7532\u516c\u53f8\u63d0\u51fa\uff1a\u6bcf\u518c\u6536\u6750\u6599\u8d395\u5143\uff0c\u53e6\u6536\u8bbe\u8ba1\u8d391500\u5143\uff1b\u4e59\u516c\u53f8\u63d0\u51fa\uff1a\u6bcf\u518c\u6536\u6750\u6599\u8d398\u5143\uff0c\u4e0d\u6536\u8bbe\u8ba1\u8d39\uff0e
\uff081\uff09\u8bf7\u5199\u51fa\u5236\u4f5c\u7eaa\u5ff5\u518c\u7684\u518c\u6570\u4e0e\u7532\u516c\u53f8\u7684\u6536\u8d39\u7684\u51fd\u6570\u5173\u7cfb\u5f0f\uff1b
\uff082\uff09\u8bf7\u5199\u51fa\u5236\u4f5c\u7eaa\u5ff5\u518c\u7684\u518c\u6570\u4e0e\u4e59\u516c\u53f8\u7684\u6536\u8d39\u7684\u51fd\u6570\u5173\u7cfb\u5f0f\uff1b
\uff083\uff09\u5982\u679c\u5b66\u6821\u6d3e\u4f60\u53bb\u7532\u3001\u4e59\u4e24\u5bb6\u516c\u53f8\u8ba2\u505a\u7eaa\u5ff5\u518c\uff0c\u4f60\u4f1a\u9009\u62e9\u54ea\u5bb6\u516c\u53f8\uff1f
9\u3001\u67d0\u6570\u76842\u500d\u52a0\u4e0a5\u4e0d\u5927\u4e8e\u8fd9\u4e2a\u6570\u76843\u500d\u51cf\u53bb4\uff0c\u90a3\u4e48\u8be5\u6570\u7684\u8303\u56f4\u662f\uff1f
10\u3001\u67d0\u79cd\u5546\u54c1\u7684\u8fdb\u4ef7\u4e3a800\u5143\uff0c\u51fa\u552e\u65f6\u6807\u4ef7\u4e3a1200\u5143\uff0c\u540e\u6765\u7531\u4e8e\u8be5\u5546\u54c1\u79ef\u538b\uff0c\u5546\u573a\u51c6\u5907\u6253\u6298\u51fa\u552e\uff0c\u4f46\u8981\u4fdd\u8bc1\u5229\u6da6\u4e0d\u5e95\u4e8e12%\uff0c\u81f3\u591a\u53ef\u6253\u51e0\u6298\uff1f
1.\u7532\u7269\u4f53\u7684\u91cd\u529b\u662f\u4e59\u7269\u4f53\u76843\u500d\uff0c\u5b83\u4eec\u5728\u540c\u4e00\u9ad8\u5ea6\u5904\u540c\u65f6\u81ea\u7531\u4e0b\u843d\uff0c\u5219\u4e0b\u5217\u8bf4\u6cd5\u4e2d\u6b63\u786e\u7684\u662f
A.\u7532\u6bd4\u4e59\u5148\u7740\u5730 B.\u7532\u6bd4\u4e59\u7684\u52a0\u901f\u5ea6\u5927
C.\u7532\u3001\u4e59\u540c\u65f6\u7740\u5730 D.\u65e0\u6cd5\u786e\u5b9a\u8c01\u5148\u7740\u5730
2.\u5173\u4e8e\u81ea\u7531\u843d\u4f53\u8fd0\u52a8\uff0c\u4e0b\u5217\u8bf4\u6cd5\u6b63\u786e\u7684\u662f
A.\u67d0\u6bb5\u65f6\u95f4\u7684\u5e73\u5747\u901f\u5ea6\u7b49\u4e8e\u521d\u901f\u5ea6\u4e0e\u672b\u901f\u5ea6\u548c\u7684\u4e00\u534a
B.\u67d0\u6bb5\u4f4d\u79fb\u7684\u5e73\u5747\u901f\u5ea6\u7b49\u4e8e\u521d\u901f\u5ea6\u4e0e\u672b\u901f\u5ea6\u548c\u7684\u4e00\u534a
C.\u5728\u4efb\u4f55\u76f8\u7b49\u65f6\u95f4\u5185\u901f\u5ea6\u53d8\u5316\u76f8\u540c
D.\u5728\u4efb\u4f55\u76f8\u7b49\u65f6\u95f4\u5185\u4f4d\u79fb\u53d8\u5316\u76f8\u540c
3.\u81ea\u7531\u843d\u4f53\u8fd0\u52a8\u5728\u4efb\u4f55\u4e24\u4e2a\u76f8\u90bb\u76841s\u5185\uff0c\u4f4d\u79fb\u7684\u589e\u91cf\u4e3a
A.1m B.5m C.10m D.\u4e0d\u80fd\u786e\u5b9a
4.\u7532\u7269\u4f53\u7684\u91cd\u91cf\u6bd4\u4e59\u7269\u4f53\u59275\u500d\uff0c\u7532\u4eceH\u9ad8\u5904\u81ea\u7531\u843d\u4e0b\uff0c\u4e59\u4ece2H\u9ad8\u5904\u4e0e\u7532\u7269\u4f53\u540c\u65f6\u81ea\u7531\u843d\u4e0b\uff0c\u5728\u5b83\u4eec\u843d\u5730\u4e4b\u524d\uff0c\u4e0b\u5217\u8bf4\u6cd5\u4e2d\u6b63\u786e\u7684\u662f
A.\u4e24\u7269\u4f53\u4e0b\u843d\u8fc7\u7a0b\u4e2d\uff0c\u5728\u540c\u4e00\u65f6\u523b\u7532\u7684\u901f\u5ea6\u6bd4\u4e59\u7684\u901f\u5ea6\u5927
B.\u4e0b\u843d1s\u672b\uff0c\u5b83\u4eec\u7684\u901f\u5ea6\u76f8\u540c
C.\u5404\u81ea\u4e0b\u843d1m\u65f6\uff0c\u5b83\u4eec\u7684\u901f\u5ea6\u76f8\u540c
D.\u4e0b\u843d\u8fc7\u7a0b\u4e2d\u7532\u7684\u52a0\u901f\u5ea6\u6bd4\u4e59\u7684\u52a0\u901f\u5ea6\u5927
5.\u4ece\u67d0\u9ad8\u5904\u91ca\u653e\u4e00\u7c92\u5c0f\u77f3\u5b50\uff0c\u7ecf\u8fc71s\u4ece\u540c\u4e00\u5730\u70b9\u518d\u91ca\u653e\u53e6\u4e00\u7c92\u5c0f\u77f3\u5b50\uff0c\u5219\u5728\u5b83\u4eec\u843d\u5730\u4e4b\u524d\uff0c\u4e24\u7c92\u77f3\u5b50\u95f4\u7684\u8ddd\u79bb\u5c06
A.\u4fdd\u6301\u4e0d\u53d8 B.\u4e0d\u65ad\u589e\u5927 C.\u4e0d\u65ad\u51cf\u5c0f D.\u6709\u65f6\u589e\u5927\uff0c\u6709\u65f6\u51cf\u5c0f
6.\u957f\u4e3a5m\u7684\u7ad6\u76f4\u6746\u4e0b\u7aef\u8ddd\u79bb\u4e00\u7ad6\u76f4\u96a7\u9053\u53e3\u4e3a5m\uff0c\u82e5\u8fd9\u4e2a\u96a7\u9053\u957f\u4e5f\u4e3a5m\uff0c\u8ba9\u8fd9\u6839\u6746\u81ea\u7531\u4e0b\u843d\uff0c\u5b83\u901a\u8fc7\u96a7\u9053\u7684\u65f6\u95f4\u4e3a
7.\u56fe1\u6240\u793a\u7684\u5404v\uff0dt\u56fe\u8c61\u80fd\u6b63\u786e\u53cd\u6620\u81ea\u7531\u843d\u4f53\u8fd0\u52a8\u8fc7\u7a0b\u7684\u662f
8.\u7532\u3001\u4e59\u4e24\u7269\u4f53\u5206\u522b\u4ece10m\u548c20m\u9ad8\u5904\u540c\u65f6\u81ea\u7531\u843d\u4e0b\uff0c\u4e0d\u8ba1\u7a7a\u6c14\u963b\u529b\uff0c\u4e0b\u9762\u63cf\u8ff0\u6b63\u786e\u7684\u662f
A.\u843d\u5730\u65f6\u7532\u7684\u901f\u5ea6\u662f\u4e59\u76841/2
B.\u843d\u5730\u7684\u65f6\u95f4\u7532\u662f\u4e59\u76842\u500d
C.\u4e0b\u843d1s\u65f6\u7532\u7684\u901f\u5ea6\u4e0e\u4e59\u7684\u901f\u5ea6\u76f8\u540c
D.\u7532\u3001\u4e59\u4e24\u7269\u4f53\u5728\u6700\u540e1s\u5185\u4e0b\u843d\u7684\u9ad8\u5ea6\u76f8\u7b49
\u4e8c\u3001\u586b\u7a7a\u9898
9.\u4ece\u9ad8h\u5904\u81ea\u7531\u4e0b\u843d\u7684\u7269\u4f53\uff0c\u843d\u5230\u5730\u9762\u6240\u7528\u7684\u65f6\u95f4\u662ft=_____\uff0c\u843d\u5730\u65f6\u7684\u901f\u5ea6v=___
\u7269\u4f53\u843d\u4e0b h/3\u65f6\u548c\u843d\u4e0b\u5168\u7a0b\u65f6\u7684\u901f\u5ea6\u4e4b\u6bd4\u662f______\uff0c\u5404\u81ea\u6240\u7ecf\u5386\u7684\u65f6\u95f4\u4e4b\u6bd4\u662f______.
10.\u81ea\u7531\u4e0b\u843d\u7684\u7269\u4f53\u5728\u5934ts\u5185\uff0c\u5934 2ts\u5185\u548c\u5934 3ts\u5185\u4e0b\u843d\u7684\u9ad8\u5ea6\u4e4b\u6bd4\u662f______\uff1b\u5728\u7b2c 1\u4e2ats\u5185\u3001\u7b2c2\u4e2ats\u5185\u3001\u7b2c3\u4e2ats\u5185\u4e0b\u843d\u7684\u9ad8\u5ea6\u4e4b\u6bd4\u53c8\u662f______.
11.\u7269\u4f53\u4ece\u9ad8270m\u5904\u81ea\u7531\u4e0b\u843d\uff0c\u628a\u5b83\u8fd0\u52a8\u7684\u603b\u65f6\u95f4\u5206\u6210\u76f8\u7b49\u76843\u6bb5\uff0c\u5219\u8fd93\u6bb5\u65f6\u95f4\u5185\u4e0b\u843d\u7684\u9ad8\u5ea6\u5206\u522b\u4e3a______m\u3001______m\u548c______m\uff1b\u82e5\u628a\u4e0b\u843d\u7684\u603b\u9ad8\u5ea6\u5206\u6210\u76f8\u7b49\u7684\u4e09\u6bb5\uff0c\u5219\u7269\u4f53\u4f9d\u6b21\u4e0b\u843d\u8fd93\u6bb5\u9ad8\u5ea6\u6240\u7528\u7684\u65f6\u95f4\u4e4b\u6bd4\u4e3a____________.
12.\u4e00\u7269\u4f53\u4ece45m\u9ad8\u5904\u81ea\u7531\u4e0b\u843d\uff0c\u5728\u6700\u540e1s\u901a\u8fc7\u7684\u9ad8\u5ea6\u662f______s\uff0c\u6700\u540e1s\u7684\u521d\u901f\u5ea6\u662f______m/s\uff0c\u6700\u540e 1s\u5185\u7684\u5e73\u5747\u901f\u5ea6\u662f______m/s\u3002
\u4e09\u3001\u8ba1\u7b97\u9898
13.\u4e00\u53ea\u7403\u4ece\u9ad8\u5904\u81ea\u7531\u4e0b\u843d\uff0c\u4e0b\u843d0.5s\u65f6\uff0c\u4e00\u9897\u5b50\u5f39\u4ece\u5176\u6b63\u4e0a\u65b9\u5411\u4e0b\u5c04\u51fb\uff0c\u8981\u4f7f\u7403\u5728\u4e0b\u843d1.8m\u65f6\u88ab\u51fb\u4e2d\uff0c\u5219\u5b50\u5f39\u53d1\u5c04\u7684\u521d\u901f\u5ea6\u662f\u591a\u5927\uff1f
14.\u5c4b\u6a90\u5b9a\u65f6\u6ef4\u51fa\u6c34\u6ef4\uff0c\u5f53\u7b2c5\u6ef4\u6b63\u6b32\u6ef4\u4e0b\u65f6\uff0c\u7b2c1\u6ef4\u5df2\u521a\u597d\u5230\u8fbe\u5730\u9762\uff0c\u800c\u7b2c3\u6ef4\u4e0e\u7b2c2\u6ef4\u6b63\u5206\u522b\u4f4d\u4e8e\u9ad81m\u7684\u7a97\u6237\u7684\u4e0a\u3001\u4e0b\u6cbf\uff0c\u5982\u56fe2\u6240\u793a\uff0c\u95ee\uff1a
\uff081\uff09\u6b64\u5c4b\u6a90\u79bb\u5730\u9762\u591a\u5c11m\uff1f
\uff082\uff09\u6ef4\u6c34\u7684\u65f6\u95f4\u95f4\u9694\u662f\u591a\u5c11\uff1f
\u81ea\u7531\u843d\u4f53\u8fd0\u52a845\u5206\u949f\u7ec3\u4e60\u9898(B)
\u4e00\u3001\u9009\u62e9\u9898
1\u3001\u5c0f\u7403\u81ea\u67d0\u4e00\u9ad8\u5ea6\u81ea\u7531\u843d\u4e0b\uff0c\u5b83\u843d\u5730\u65f6\u7684\u901f\u5ea6\u4e0e\u843d\u5230\u4e00\u534a\u9ad8\u5ea6\u65f6\u7684\u901f\u5ea6\u4e4b\u6bd4\u662f
A. \u22361 B. \u22362 C.2\u22361 D.4\u22361
2\u3001\u628a\u81ea\u7531\u843d\u4f53\u7269\u4f53\u7684\u603b\u4f4d\u79fb\u5206\u6210\u76f8\u7b49\u7684\u4e09\u6bb5\uff0c\u5219\u6309\u7531\u4e0a\u5230\u4e0b\u7684\u987a\u5e8f\u7ecf\u8fc7\u8fd9\u4e09\u6bb5\u4f4d\u79fb\u6240\u9700\u65f6\u95f4\u4e4b\u6bd4\u662f
A.1\u22363\u22365 B.1\u22364\u22369 C.1\u2236 \u2236 D.1\u2236( -1)\u2236( - )
3\u3001\u4ece\u540c\u4e00\u9ad8\u5ea6\u5904\uff0c\u5148\u540e\u91ca\u653e\u4e24\u4e2a\u91cd\u7269\uff0c\u7532\u91ca\u653e\u4e00\u6bb5\u65f6\u95f4\u540e\uff0c\u518d\u91ca\u653e\u4e59\uff0c\u5219\u4ee5\u4e59\u4e3a\u53c2\u7167\u7269\uff0c\u7532\u7684\u8fd0\u52a8\u5f62\u5f0f\u4e3a
A.\u81ea\u7531\u843d\u4f53\u8fd0\u52a8 B.\u5300\u52a0\u901f\u76f4\u7ebf\u8fd0\u52a8a\uff1cg
C.\u5300\u52a0\u901f\u76f4\u7ebf\u8fd0\u52a8a\uff1eg D.\u5300\u901f\u76f4\u7ebf\u8fd0\u52a8
4\u3001\u5c0f\u7403\u81ea\u8ddd\u5730\u976217m\u7684\u9ad8\u5ea6\u81ea\u7531\u4e0b\u843d\uff0c\u7a7a\u6c14\u963b\u529b\u4e0d\u8ba1\uff0c\u5219\u5c0f\u7403\u5728\u843d\u5730\u524d\u901a\u8fc7\u6700\u540e1m\u6240\u7528\u7684\u65f6\u95f4\u662f\u5b83\u901a\u8fc7\u6700\u521d1m\u6240\u7528\u65f6\u95f4\u7684
A\uff0e\uff08 -4\uff09\u500d B. \u500d C\uff0e \u500d D. \u500d
5\u3001\u5728\u67d0\u9ad8\u5ea6h1\u5904\u81ea\u7531\u843d\u4e0b\u4e00\u7269\u4f53A\uff0c1s\u540e\u4ece\u53e6\u4e00\u8f83\u4f4e\u9ad8\u5ea6h2¬\u5904\u81ea\u7531\u843d\u4e0b\u53e6\u4e00\u7269\u4f53B\u3002\u82e5A\u4ece\u5f00\u59cb\u4e0b\u843d\u5904\u7b97\u8d77\u4e0b\u843d45m\u540e\u8d76\u4e0a\u7269\u4f53B\uff0c\u5e76\u4e14\u518d\u8fc71s\u843d\u5730\uff0c\u5219\u7269\u4f53B\u4ece\u4e0b\u843d\u5230\u7740\u5730\u6240\u7ecf\u5386\u7684
2.已知14*(a^2+b^2+c^2)=(a+2b+3c)^2,求证：a:b:c=1:2:3
注：①请写出详细步骤！！
②此2题为八年级启东中学作业本(华东师大版)P59的24和25题
答;1,解:将两式相加
x^2+xy+y=14
y^2+xy+x=28得:
x^2+xy+y+y^2+xy+x=28+14
(x^2+2xy+y^2)+(x+y)-42=0
(x+y)^2+(x+y)-42=0(将(x+y)看成一个整体,分解因式得)
(x+y+7)(x+y-6)=0
即:x+y= -7或x+y=6
2,证明:
14*(a^2+b^2+c^2)=(a+2b+3c)^2
14a^2+14b^2+14c^2=a^2+4ab+4b^2+12bc+9c^2+6ac
14a^2+14b^2+14c^2-a^2-4ab-4b^2-12bc-9c^2-6ac=0
13a^2+10b^2+5c^2-4ab-12bc-6ac=0
注意到要证明的结果是a:b:c=1:2:3即:c=3a,所以上式可以化简为:
(9a^2-6ac+c^2)+(4a^2-4ab+b^2)+(9b^2-12bc+4c^2)
(3a-c)^2+(2a-b)^2+(3b-2c)^2=0
3a-c=0
2a-b=0
3b-2c=0
即:c=3a
b=2a
所以:a:b:c=a:2a:3a=1:2:3
甲、乙两件服装的成本共500元，商店老板为获取利润，决定将服装按50%的利润定价，乙服装按40%的利润定价，在实际出售时，应顾客要求，两件服装均按9折出售，这样商店共获利157元，求甲、乙 两件服装的成本各是多少元？
甲、乙两件服装的成本共500元，商店老板为获取利润，决定将服装按50%的利润定价，乙服装按40%的利润定价，在实际出售时，应顾客要求，两件服装均按9折出售，这样商店共获利157元，求甲、乙 两件服装的成本各是多少元？
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