江苏省无锡锡东片2021-2022学年中考数学模拟试题含解析及点睛

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100+-X20
=2240,2ᓄîx2-10x+24=0,xi=4,X2=6.

17ÁᓟÃ᪶᪻ÆÇ4ᐗᡈ6ᐗ.(2)ᵫ(1)89ÁᓟÃ᪶᪻8ÆÇ4ᐗᡈ6ᐗ.••,⌕Ê8ËÌᑭVÍÎÁᓟÃ᪶᪻ÆÇ6ᐗ.54c!ÏÇ60-6=54(ᐗ)—xl00%=90%.60ÐÑᢥ;ÏÇḄÓᢚtÏ.422ஹ(1)AᙠX]1Õᳮᵫ᪆U(2)§W£4.ூ᪆௃(1)ᵫ⚪5BஹAᙶ᪗ØAḄÙᙶ᪗x=-lÚᐭ᪆y=2x+45tyḄ(ᓽ85tAᙠX]1Õ;(2)WX]1ÝÞD!m1Ḅ᪆Úᐭᦪ(tᓽ8ூ௃(1)c!AᙠX]1Õ.VBC=AB=2,OBC,.,.B(—1,0),A(-B2).ØAḄÙᙶ᪗x=-lÚᐭ᪆y=2x+4,y=2,VAḄßᙶ᪗2,•••c!AᙠX]1Õ.(2)ᵫ⚪85D(l,2),*M(—2,0),WX]1ÝÞD!m1Ḅ᪆y=kx+t(k#)),_2k+t=0,»5à[k+t=2,4t=3-ᵫ(1)9WX]1ÝÞA!t=4.•••WX]1`ADᨵâᐳ!tḄã(å:ᐰt".ூ௃

18⚪ὃḄTÝ&I¼ßᦪÛᔠ⚪⚪Ḅᐵ(&pqḄrsI¼ßᦪÛᔠ⚪.23ஹÑ{ï<ðñᨵI{GḄᭆ᳛.ூ᪆௃ூᑖ᪆௃ô᪛ö;÷Æᡠᨵ9ø^Ḅùúᦪûº“ðñᨵI{G”Ḅùúᦪᯠ§᪷-ᭆ᳛.ூ௃ô᪛ö;ýGþ/K/N/1\ýGþýGþýGþᐳᨵ9
ḄᦪᐸᨵḄᦪ5,ᡠᨵḄᭆ᳛*.9ூ௃⚪ὃ#$ᑡ⊤'(᪛*+',ᑭᵨᑡ⊤'ᡈ᪛*+'01ᡠᨵḄn,23⌱56ᔠ89AᡈBḄᦪ:m,ᯠ<ᑭᵨᭆ᳛=>?@89Aᡈ89BḄᭆ᳛.ᭆ᳛=ᡠBCDᦪ(ECDᦪF.24ஹCᑮᙢ☢ADḄKL,(272+2)m.ூM᪆௃O᪀⌼RSRT2ᑭᵨ┦RSRVᦪᐵXY5BE,CFḄZ[\Y5]ᫀ.ூ_M௃`BaBE_LADbE,aBF஻AD,`CaCF_LBFbF,DEAᙠRtAABE•:ZA=30°,AB=4m,BE=2m,ᵫ⚪eY,BF/7AD,fgNFBA=NA=30஺ᙠR3CBFVZABC=75°,AZCBF=45°,-VBC=4m,--.CF=sin45°*BC=2V27?7,

19ACᑮᙢ☢ADḄKL,æ272+2”.ூ௃ὃ#MRSRTijkl┦RSRVᦪmM⚪Ḅᐵn.