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七年級數(shù)學配套練習冊答案(文件)

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【正文】 AB,△OAC,△OBD,△ 440176。.176。.176。.176?!螪AE=10176。(2)(,),(,0),(0,),(0,0),(,1).(1,1)為原點O′,x′軸∥x軸,y′軸∥y軸,分別以向右、向上為正向,單位長度不變,B,C坐標分別是A(2,1),B(2,2),C(1,2). 176。.2.∠DCE=∠ 176。..(1)∠DOC=∠B=∠E;(2)不一定;.(a+1)2(a1)2.*,5,:D點在B,C之間和D點在B,建立直角坐標系,以垂足為原點,以直線BC為x軸,以高所在直線為y軸.第五篇:人教版六年級下數(shù)學配套練習冊答案1負數(shù)答案試一試正數(shù):++815/+ 負數(shù):25189。120220 +3360600(1)5(2)東5(3)+1(4)162折扣成數(shù)答案填一填 90 %%% 20 %%%九九七五七五 五五六三六三解決問題(1)28001955 = 25(元)答:劉老師花的錢多,多25元。(1 + 20%)= 3(萬噸)答:產(chǎn)量是30萬噸。4000(400015 = 3985(元)答:爸爸這個月的實際收入為3985元。4000 3 % = 12000 % = 510(元)答:得到的利息是510元。 2 = 7000(元)答:當時存了7000元。原價: 247。20160六80%7/10五200168 1425(二)判一判。525 247。50000 + 50000 5 % = 57850(元)答:今年李奶奶一共可以拿到57850元錢。 30000 100% = 1500 247。(30160 = 1440(人)答:參加保險的學生有1440人。+6,+1/5,+63,1/+63方向距離62 = = (二)判一判。..(1)22x23,21;(2)2y2+19y,=、三等門票33張,或購二等門票7張、:分三種情況分別列二元一次方程組,其中購一等門票、176。(2)2。.,3,.(1)3,,2n+ ,,診所(6,9),商店(7,3),學校(1,1)..(1)(C,4),(A,4),(0,3),(0,1),(A,0),(C,0),(D,1),(D,3)。72176?!螩=140176。.1.√;;√;√;√;.,圓內(nèi),:AB,BC,CD,AD,BD,AC;半圓:ABC,ADC;優(yōu)?。築AD,CAD,BAC,ABD,ACB;劣弧:AB,BC,CD,AD,:2π(80+10)8=2π(80+10+x)10,x=(厘米).第2課時 1.;.(1π4).176。144176。.提示:延長BO交AC于D,∠BOC=∠BDC+12∠C=∠A+12∠B+12∠C=90176。.8.(1)105176。.提示:∠APD=∠A2+∠.(1)125176。△ADC,△BDC。(5).2.△ABC,△BDC,△BEC。(3)12x(2a1)=(x+1)(2x3)=12時,原式==(312+1)(36+1)(33+1)(331)=28(312+1)(36+1)(331).=12(ab)2=1.(1)√。(2)76 900。(3).(1)2a3x2(2+a)(2a)。34=4(ab)2(a+b),(x+1)(x1).3.(a1)(x+y)(xy)..(1)m(m2+1)(m+1)(m1).(2)2x3(3y+1)(3y1).(3)(x+2)2(x2)2.(4)(x+1)=12(3)(mn)2。(3)2xy(1+2x4x2)。(4)916s2+st+.(a+b)2=4ab+(ab)+2ab+b2=9,a22ab+b2==14(949)=+b2=92ab=+b2+c2++z2+.(1)2a2b2b4。(4).(1)(300+3)(3003)=90 0009=89 991。(2)103。(2)10 099。(2).(1)yx。(2)12x3+14x24x。(2).(1)14x5y4z2。(2)(3)x12。(2)3.(1)(ab)5。(3)m=2,n==1,y=:按丙的方法,35x=3,25y=4,得x=5,y=.(1)x=1,y=8。.∥CD,所以∠AEF=∠2,∠AEG=∠3,因為∠AEG=∠1+∠2,所以∠3=∠1+∠176。.8.∠1=115176。.第九章綜合練習176。∠FBC=30176。.∥∥MN,DE∥:由AD∥BC,得∠A+∠B=180176。.176。.176。=70176。.∠COF+∠DOE=100176。,∠EOF=170176。A,O,∠BOE=x176。.176。.4.(1)54176。,30176。.176。30′,∠2=45176。.6.(1)相等;(2)180176。(2)176。55′;(3)125176。9′36″。12′。;(2)不變;提示:90+2x2x=45。 1.(1)42176。第三篇:人教版七年級下冊英語配套練習冊答案單詞:(七下冊u1)country, Canada, Japan, Australia, French, language, pal, live, United, Singapore 選擇:ABDBBCAACD 句型:is from, Where from, What language(s), Where does, Does speak 翻譯:Where is from is from, does live lives, language speak speaks, Chinese speaks Japanese 對話:EFBDA Section B 單詞:write,favorite,difficult,world, wants, 介詞: for, in ,to, from in, in, with, at, from in, to on 選擇:CCAAC BCABC CBBDB翻譯:speak speaks French, think interesting, a little,writes to his parents about, playing sports onu2A答案,restaurant,supermarket,bridge,post office, Avenue, neighborhood 2:CBCBCCDCCC 3Where are ,is a long bridge, Yes, there is, Are there any, There are two small restaurants in the 1:small, quiet,beginning, through,dirty,hungry,way,garden,visit,tour,supermarket,airport,district,place,tour 2:BABBABCBAC 3:Go down/turn left,have a good trip,know/arriving,with/next to,tell/the way 4:is,post office,between,across from,down/along,on,school U3答案:gi
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