数学题！快快！）（*—……%￥#·！·#￥￥%…………——**（（ 6年级的数学题!!!快快!
\u5feb\u5feb\uff01\uff01\uff01\uff01\uff01\uff01\u5c0f\u5b66\u6570\u5b66\u9898\u5feb\u6765\u89e3\uff01\uff01\u6211\u8981\u6b7b\u4e86\uff011. \u56e0\u4e3a\u751f\u4ea7\u6548\u7387=\u4ea7\u91cf/\u4eba\u5458,\u597d\u90a3\u4e48\u5b83\u8bf4\u4ea7\u91cf\u589e\u52a0\u4e8640%\u6211\u4eec\u628a\u539f\u4ea7\u91cf\u770b\u505a\u5355\u4f4d1,\u73b0\u4ea7\u91cf\u5c31\u662f1+40%=1.4\u4eba\u5458\u51cf\u5c11\u4e8620%,\u5458\u4eba\u6570\u4e3a1,\u73b0\u4eba\u6570\u5c31\u662f1-20%=0.8\u30021.4/0.8=1.75=175%
2 \u89e3\uff1a\u8bbe\u4ed6\u4eec\u5404\u6350\u51fa\u4e86X\u672c\u4e66
\uff08140-X\uff09=0.8\uff08170-X\uff09
X=20
2X=40
\u7b54\uff1a\u5171\u6350\u51fa\u4e8640\u672c
\u56de\u7b54\u8005\uff1a \u4e00\u98de\u51b2\u59293385 - \u804c\u573a\u65b0\u4eba \u4e09\u7ea7 2009-10-3 15:19
\u68c0\u4e3e \u89e3\uff1a\uff081\uff09.\u751f\u4ea7\u6548\u7387 w=\u4ea7\u91cf/\u751f\u4ea7\u6295\u5165\uff0c\u4e5f\u5c31\u76f8\u5f53\u4e8e\u4eba\u5458\u6570\u91cf
w=\uff081+0.4\uff09/\uff081-0.2\uff09=1.75
\uff082\uff09.\u5047\u8bbe\u5404\u6350\u51fa\u4e86x\u672c\uff0c\u90a3\u4e48\uff1a
\uff08140-x\uff09=0.8*\uff08170-x\uff09\uff0c \u89e3\u5f97x=20
\u90a3\u4e48\u4e00\u517140\u672c
\u56de\u7b54\u8005\uff1a \u9ed1\u864e\u7684\u4e3b\u4eba\u521a\u54e5 - \u4ec0\u957f \u4e94\u7ea7 2009-10-3 15:20
\u68c0\u4e3e 175%
40\u672c
\u6b7b\u4e86\u4e48?
\u6211\u7684\u7b54\u6848\u8fd8\u53ca\u65f6\u5427\uff1f
\u4e0d\u6025\u7684\u8bdd
\u6211\u518d\u5199\u4e2a\u9898\u76ee\u89e3\u6790\u548c\u8fc7\u7a0b
ok\uff1f
\u67d0\u573a\u6539\u8fdb\u751f\u4ea7\u6280\u672f\u540e\uff0c\u751f\u4ea7\u4eba\u5458\u51cf\u5c11\u4e8620%\uff0c\u800c\u4ea7\u91cf\u5374\u589e\u957f\u4e8640%\u3002\u73b0\u5728\u7684\u751f\u4ea7\u6548\u7387\u662f\u539f\u6765\u7684\u767e\u5206\u4e4b\u51e0\uff1f
\u751f\u4ea7\u4eba\u5458\u51cf\u5c11\u4e8620%\uff1a\u5c31\u662f\u8bf4\u5728\u539f\u6765\u201c1\u201d\uff08100%\uff09\u7684\u57fa\u7840\u4e0a\u5c11\u4e8620%
\u90a3\u4e48\u662f\uff1a100%-20%=80%
\u800c\u4ea7\u91cf\u5374\u589e\u957f\u4e8640%\uff1a\u4e5f\u662f\u8bf4\u5728\u539f\u6765\u201c1\u201d\uff08100%\uff09\u7684\u57fa\u7840\u4e0a\u591a\u4e8640%
\u90a3\u4e48\u662f\uff1a100%+40%=140%
\u751f\u4ea7\u6548\u7387=\u4ea7\u91cf\u00f7\u4eba\u5458
\u4e5f\u5c31\u662f\u8bf4\uff1a140%\u00f780%=175%
\u597d\u4e86\uff0c\u4e0b\u4e00\u4e2a
\u5c0f\u519b\u6709\u8bfe\u5916\u4e66140\u672c\uff0c
\u5c0f\u6797\u6709\u8bfe\u5916\u4e66170\u672c\uff0c
\u518d\u50cf\u707e\u533a\u6350\u4e66\u7684\u6d3b\u52a8\u4e2d\uff0c
\u4ed6\u4eec\u6350\u51fa\u4e86\u76f8\u540c\u7684\u4eec\u6570\u540e\uff0c
\u5c0f\u519b\u7684\u8bfe\u5916\u4e66\u662f\u5c0f\u679780%\uff1a\u662f\u5728\u8bf4 \u4ed6\u4eec\u73b0\u5728\u4e66\u7684\u6bd4\u662f\uff1a8\uff1a10
4\uff1a5
140+170=310
\u79bb310\u6700\u8fd1\u76849\u7684\u500d\u6570\u662f270=9\u00d730
\u90a3\u4e48310-270=40
\u597d\u4e86 ok\u4e86
\u56de\u7b54\u8005\uff1a \u72c2\u70ab\u98ce\u66b4 - \u521d\u5165\u6c5f\u6e56 \u56db\u7ea7 2009-10-3 15:29
\u68c0\u4e3e \u89e3\uff1a1\u3001\u8bbe\u67d0\u573a\u539f\u6709\u751f\u4ea7\u4eba\u5458X\u4eba\uff0c\u539f\u6709\u4ea7\u91cfY\uff0c\u5219\u539f\u6765\u7684\u751f\u4ea7\u6548\u7387\u4e3aY/X\uff0c\u73b0\u5728\u7684\u751f\u4ea7\u6548\u7387\u4e3a\uff08Y+Y*40%\uff09/\uff08X-X*20%\uff09\uff0c\u90a3\u4e48[\uff08Y+Y*40%\uff09/\uff08X-X*20%\uff09]/\uff08Y/X\uff09*100%=175%\u3002
\u7b54\uff1a\u73b0\u5728\u7684\u751f\u4ea7\u6548\u7387\u662f\u539f\u6765\u7684175%\u3002
2\u3001\u8bbe\u5c0f\u519b\u548c\u5c0f\u6797\u5206\u522b\u6350\u51fa\u4e86X\u672c\u4e66\uff0c\u5219\uff08140-X\uff09/\uff08170-X\uff09=80%\uff0c\u89e3\u65b9\u7a0b\u5f97X=20\uff0c\u52192X=2*20=40\u3002
\u7b54\uff1a\u5c0f\u519b\u548c\u5c0f\u6797\u5171\u6350\u51fa\u4e8640\u672c\u8bfe\u5916\u4e66\u3002
\u56de\u7b54\u8005\uff1a qltkbd - \u89c1\u4e60\u4e3b\u7ba1 \u4e94\u7ea7 2009-10-3 15:47
\u68c0\u4e3e \u5e7c\u7a1a\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff011
\u56de\u7b54\u8005\uff1a dongshuyu2009 - \u9b54\u6cd5\u5b66\u5f92 \u4e00\u7ea7 2009-10-3 15:52
\u68c0\u4e3e 40
\u56de\u7b54\u8005\uff1a 60.191.8.* 2009-10-3 16:30
\u68c0\u4e3e \u5feb\u5feb\uff01\uff01\uff01\uff01\uff01\uff01\u5c0f\u5b66\u6570\u5b66\u9898\u5feb\u6765\u89e3\uff01\uff01\u6211\u8981\u6b7b\u4e86\uff01
\u56de\u7b54\u8005\uff1a lsh2009a - \u89c1\u4e60\u4e3b\u7ba1 \u4e94\u7ea7 2009-10-3 16:45
\u68c0\u4e3e 175% 40
\u56de\u7b54\u8005\uff1a \u65e0\u654c\u5de8\u7075\u795e - \u4f0d\u957f \u56db\u7ea7 2009-10-3 16:58
\u68c0\u4e3e 2:\u8bbe\u5404\u6350\u51fa\u7684\u672c\u4e66\u662fX\uff0c\u7b97\u5f0f\u4e3a:140-X=(170-X\uff09x0.8 \u89e3\u5f97X\u4e3a20 \u6240\u4ee5\u5171\u6350\u51fa\u4e8640\u672c
\u56de\u7b54\u8005\uff1a \u7ee7\u7eed\u5fd8\u8bb0\u4f60\u2640\u661f - \u4e2d\u7ea7\u5f1f\u5b50 \u4e8c\u7ea7 2009-10-3 17:48
\u7b2c\u4e00\u4e2a\u5706\u67f1\u8868\u9762\u79ef s\u4fa7\uff1a6*3.14*5=94.2\u5e73\u65b9\u5398\u7c73
r:6/2=3\u5398\u7c73 s\u5e95\uff1a3*3*3.14=28.26\u5e73\u65b9\u5398\u7c73
s\u8868\uff1a94.2+28.26*2=150.72\u5e73\u65b9\u5398\u7c73
\u7b2c\u4e8c\u4e2a\u5706\u67f1\u8868\u9762\u79ef s\u4fa7\uff1a4*3.14*5=62.8\u5e73\u65b9\u5398\u7c73
r:4/2=2\u5398\u7c73 s\u5e95\uff1a2*2*3.14=12.56\u5e73\u65b9\u5398\u7c73
s\u8868\uff1a62.8+12.56*2=87.92\u5e73\u65b9\u5398\u7c73
\u7b2c\u4e09\u4e2a\u5706\u67f1\u8868\u9762\u79ef s\u4fa7\uff1a2*3.14*5=31.4\u5e73\u65b9\u5398\u7c73
r:2/2=1\u5398\u7c73 s\u5e95\uff1a1*1*3.14=3.14\u5e73\u65b9\u5398\u7c73
s\u8868\uff1a31.4+3.14*2=37.68\u5e73\u65b9\u5398\u7c73
150.72+87.92+37.68=276.32\u5e73\u65b9\u5398\u7c73
276.32-(28.26*2+12.56*2+3.14*2)=188.4\u5e73\u65b9\u5398\u7c73
\u5e0c\u671b\u53ef\u4ee5\u5e2e\u5230\u4f60
NO2:196.7度
NO3：题目可能有问题，如果没有问题的话，则以定其中一种水果的价格
第一题：A:30kg,B:40kg,C:50kg
第二题：198度电
第三题：还在算
全列方程
绛旓細绗竴涓渾鏌辫〃闈㈢Н s渚э細6*3.14*5=94.2骞虫柟鍘樼背 r:6/2=3鍘樼背 s搴曪細3*3*3.14=28.26骞虫柟鍘樼背 s琛細94.2+28.26*2=150.72骞虫柟鍘樼背 绗簩涓渾鏌辫〃闈㈢Н s渚э細4*3.14*5=62.8骞虫柟鍘樼背 r:4/2=2鍘樼背 s搴曪細2*2*3.14=12.56骞虫柟鍘樼背 s琛細62.8+12.56*2=87.92骞虫柟鍘樼背 绗笁涓...
绛旓細瑙ｇ瓟锛(1)a1=2, b1=4 2*4=2+a2锛屽垯a2=6 6^2=4*b2锛屽垯b2=9 2*9=6+a3锛屽垯a3=12 12^2=9*b3锛屽垯b3=16 鐢盿1=2=1*2锛 a2=6=2*3, a3=12=3*4 鐚滄祴 an=n(n+1)鐢眀1=4=2^2, b2=9=3^2, b3=16=4^2 鐚滄祴 bn=(n+1)^2 璇佹槑锛歛(n)+a(n+1)=n(n+1)+(n+...
绛旓細鍖栫畝姣旓細3:10 10:1 3:4 8:1 姹傛瘮鍊硷細7:100=0.07 27:14绾︾瓑浜1.93 8:5=1.6 1:20=0.05 鎴戞摝锛岃兘鐪嬪浘鐗囧惂锛
绛旓細绗竴棰 璁惧皬鏉閲忎负x 鍒欏ぇ鏉殑鏄4x 3脳4x+2x=1400 14x=1400 x=100 鏁 灏忔澂瀹归噺涓100姣崌澶ф澂瀹归噺涓400姣崌 绗簩棰 璁惧皬浠撳簱鐨勪负x 鍒欏ぇ鐨勪负3x 4脳3x锛3x=1200 15x=1200 x=80 3x=240 鏁 姣忎釜澶т粨搴撹繍杩240 绗笁棰 璁剧粌涔犳湰浠烽挶涓簒 鍒欑瑪璁版湰涓簒+2.8 3x+2(x+2.8)=11.6 ...
绛旓細浠ゆ鏂瑰舰ABCD鐨勮竟闀夸负1锛岀敱浜庡洓涓鐨勪笁瑙掑舰鍏ㄧ瓑锛屽垯闈㈢Н涓鏍凤紝鍒欒鍏朵腑涓涓夎褰㈢殑涓鏉¤竟鐨勯暱搴︿负x锛岄偅涔堝彟澶栦竴鏉＄殑杈圭殑闀垮害涓1-x锛涜璁╁洓杈瑰舰EFGH鐨勯潰绉渶灏忥紝鍒欏洓涓笁瑙掑舰鐨勯潰绉箣鍜屾渶澶э紝鐢变簬鍥涗釜涓夎褰㈢殑闈㈢Н鐩稿悓锛屽垯鍙姹傚緱浣垮叾涓竴涓笁瑙掑舰闈㈢Н鏈澶х殑鐐广備笁瑙掑舰鐨勯潰绉疭=1/2(1-x)x...
绛旓細n(n-1)/2=465 n(n-1)=930 n^2-n-930=0 (n-31)(n+30)=0 n=31.鍗虫渶灏戞湁31鏉.=== 浠呬緵鍙傝:涓ゆ潯鐩寸嚎鍙湁涓涓氦鐐癸紝绗3鏉＄洿绾垮拰鍓嶄袱鏉＄洿绾块兘鐩镐氦锛屽鍔犱簡2涓氦鐐癸紝寰1锛2 锛涚4鏉＄洿绾垮拰鍓3鏉＄洿绾块兘鐩镐氦锛屽鍔犱簡3涓氦鐐癸紝寰1锛2锛3 锛涚5鏉＄洿绾垮拰鍓4鏉＄洿绾块兘鐩镐氦锛屽鍔犱簡4...
绛旓細8銆佷功鍖呴噷鏈鏁板銆佽鏂囥佽嫳璇拰鍝佸痉涔﹀悇涓鏈紝浠庝腑浠绘剰鎷垮嚭涓鏈垨鍑犳湰銆備竴鍏辨湁澶氬皯绉嶄笉鍚岀殑缁撴灉锛9銆34涓悓瀛︽鍦ㄨ繘琛屼箳涔撶悆鍗曟墦銆佸弻鎵撴瘮璧涳紝姝ｅソ鐢ㄤ簡12寮犱箳涔撶悆妗屻備綘鑳界畻鍑鸿繘琛屼箳涔撶悆鍗曟墦鍜屽弻鎵撶殑鐞冩鍚勬湁鍑犲紶鍚楋紵10銆佸箍鐢电珯鏄1璺溅鍜2璺溅鍏敤鐨勭珯鍙帮紝1璺溅姣忛殧12鍒嗛挓闈犱竴娆＄珯鍙帮紝2璺溅姣忛殧...
绛旓細1銆侀鐑熶负鍦嗘煴褰紝鍖呰绾搁潰绉嵆涓哄渾鏌变晶闈㈢Н锛屽嵆鍦嗘煴鍛ㄩ暱*鐑熷嵎闀垮害銆傛墍浠ワ紝S1=蟺*0.8*5.5锛孲2=蟺*0.8*3銆傝嫢鏈20涓囧彧棣欑儫锛屽嵆涓20涓*S1骞虫柟鍘樼背鍜20涓*S2骞虫柟鍘樼背锛屾崲绠楁垚骞虫柟绫炽傦紙涓骞虫柟绫崇瓑浜1涓囧钩鏂瑰帢绫筹級2銆佸渾鏌辩殑搴曢潰绉+渚ч潰鍗充负鎶规按娉ラ儴鍒嗛潰绉紝搴曢潰绉=蟺*R^2=4蟺銆備晶闈㈢Н=鍛ㄩ暱*...
绛旓細1銆6,5,4鏈灏忓叕鍊嶆暟涓60.鍒60鍒嗛挓锛岀敳鍋氫簡10涓紝涔欏仛浜12涓紝涓欏仛浜15涓10+12+15=37 370梅37=10 鐢诧細10x10=100 涔欙細12x10=120 涓欙細15x10=150 2銆佽涔欐湁A鍏嬨傦紙4A-13锛/(A+13)=7/5 瑙ｅ緱A= 12 鐢=4A=48 3銆7A=3B锛(A+70)/(B+70)=7/4 瑙ｅ緱锛欰...
绛旓細1銆(1)鍥犱负BC=2AD,E鏄疊C涓偣 鎵浠E=CE=AD 鍙堝洜涓篈D骞宠浜嶣E 鎵浠DBE銆丄ECE鏄钩琛屽洓杈瑰舰 鎵浠D=AE=2锛孉B=DE=2 鎵浠D=AB 鎵浠ユ褰BCD鏄瓑鑵版褰 (2)AB鍨傜洿浜嶢C鏃跺洓杈瑰舰AECD鏄彵褰傚洜涓篈B鍨傜洿浜嶢C,AB骞宠浜嶥E锛屾墍浠C鍨傜洿浜嶥E 鍦ㄥ钩琛屽洓杈瑰舰AECD涓紝鍥犱负AC鍨傜洿浜嶥E锛屾墍浠ュ钩琛屽洓杈瑰舰AE...
