谁会啊,谢了,数学题,?!??!!?!;;;;;:
\u6570\u5b66\u9898\uff0c\u8c01\u4f1a\u554a\uff1f\u56e0\u4e3aAF=CE \u6240\u4ee5\u56db\u8fb9\u5f62ACEF\u662f\u5e73\u884c\u56db\u8fb9\u5f62\uff1b
\u4e09\u89d2\u5f62ACE\u53ea\u8981\u662f\u7b49\u8fb9\u4e09\u89d2\u5f62\u90a3\u4e48ACEF\u5c31\u662f\u6b63\u65b9\u5f62
\u4e24\u4eba\u5408\u4f5c8\u5929\u5b8c\u6210\uff1a\u65452\u4eba\u6bcf\u5929\u53ef\u5b8c\u62101/8;
\u4e59\u4e2a\u4eba12\u5929\u5b8c\u6210\uff1a\u6545\u4e59\u6bcf\u5929\u53ef\u5b8c\u62101/12,\u5bf9\u5e94\u7532\u6bcf\u5929\u53ef\u5b8c\u62101/8-1/12=1/24;
\u4e24\u4eba\u5408\u4f5c\u540e\u4e59\u79bb\u5f00\uff0c\u7532\u53c8\u75283\u5929\uff1a\u7532\u4e09\u5929\u5b8c\u62101/24*3=1/8
\u5269\u4e0b1-1/8=7/8\u4e3a2\u4eba\u5408\u4f5c\u5b8c\u6210\uff1b\u5171(7/8)/(1/8)=7\u5929\u3002
30度18分36秒=30度+(18/60)度+(36/3600)度=30度+0.3度+0.01度=30.31度
143.16度=143度(0.16*60)分=143度9.6分=143度9分(0.6*60)秒=143度9分36秒
。
绛旓細= (3/10)(3/10)^(1/2) + 3 - 3^(1/2)
绛旓細鍥炵瓟锛49x^2-16=0 (7x+4)(7x-4)=0 7x+4=0鎴7x-4=0 x1=-4/7, x2=4/7 8x^3=-125 x^3=-125/8 x=-5/2
绛旓細鐢变袱涓瀭鐩存潯浠跺彲寰桟E骞宠MN 鎵浠ヨECB=瑙2 鎵浠ヨECB=瑙1 鎵浠D骞宠浜嶣C 鎵浠ヨB=瑙扐ED 鎵浠ヨEDC=瑙扐+瑙扐ED=瑙扐+瑙払 鎵浠ヨACB+瑙扙DC=瑙扐CB+瑙扐+瑙払=180
绛旓細鍥炵瓟锛欵C=2 AB:BC:CD=4:5:7 CD=14 鎵浠 AB=8 BC=10 E鏄腑鐐 鎵浠 AE=ED=16 ED-CD=16-14=2
绛旓細鍥炵瓟锛氬厛鍘诲垎姣嶅緱:(x-1)-2*0.3x=6*0.1x+0.2 x-1-0.6x=0.6x+0.2 x-1=1.2x+0.2 -1.2=0.2x x=-6
绛旓細1銆22x*2=(27-x)*16 2銆佽X绔嬫柟绫虫潗鏂欏仛妗岄潰锛孻绔嬫柟绫虫潗鏂欏仛妗岃吙锛屽垯鏈夛細X+Y=15鈶 50X*4=300Y鈶 灏嗏憼浠e叆鈶″緱锛200(15-Y)=300Y锛3000-200Y=300Y锛3000=500Y锛孻=6绔嬫柟绫筹紝X=15-6=9绔嬫柟绫炽
绛旓細鍥炵瓟锛6)12 5 7)4 5 8)8 9) [1]0.8 [2]1.25 [3]1.6 [4]0
绛旓細鍦嗗湀= 2锛 涓夎褰=5锛 浜旇鏄=9 寰楀厛纭畾浜旇鏄熺瓑浜庡嚑锛 鐒跺悗鍐嶅線鍓嶆帹鐞嗭紝灏辫繋鍒冭岃В浜
绛旓細绗簩閬撻浼氫笉浼氭妱閿欎簡锛0.027寮骞虫柟鏄紑涓嶅嚭鏉ョ殑锛屽簲璇ユ槸寮绔嬫柟鍚
绛旓細鎶婁袱涓柟绋嬬浉鍔狅紝寰3x+3y=9 鍒檟+y= 3.