河北省邢台市2021-2022学年中考数学模拟试卷（一模）含解析版

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ᑣᐸᓫt%ᐗூ@ᫀ௃Y1ᦪᐵ%y=——;
2:kᑜᜩḄᑭ%450ᐗ
ᑣᐸᓫt%x40ᐗ.ூ᪆௃ூ௃⚪ᑖ᪆Y1᪷F⊤{5xZyḄ<
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2᪷Fᑭ=t-st⊤¡ᑭ
ᵫᜩḄᑭ%450ᐗᑡ£f
;£fḄᓽLᑮ12.⚪᪆Y1ᵫ⊤5ᦪFLxy=600,600•.y=-----fx.•.ᡠ;ᦪᐵ%¤=%X(2)ᵫ⚪¦L(x-10)y=450,.,600„ஹ600¨y=-----©ᐭL(x-10)------=450,xxLx=40,«¬
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ᑣᐸᓫt%40ᐗ.23.!ᙽᩞᧇḄ᜜µ┦I·IµABC,¸BC=12cs,¹AD=8cw,¨º»eᡂ¼µ½¾᝞+
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ᵫBCAD8¼µXZÅḄ%32,ᑖ3ᑖÄ;ᓽ.⚪᪆=21⚓/24⚓

21••Ì¸µPQMN¼µ
BC஻PQ,AAAPQ^AABC,.PQAH••!,BCADᵫ8¼µXZÅḄ%32,...ᑖ3জ:PQ%X
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ÎPN=3k,PQ=2k,2k8—3Ïnlᑣ—=-----128L:k=!137248\PN=——cmPQ=—cm13137248ÐÁᡠѼµḄX%6cm,Å%4cmᡈX%—cm,Å%—cm.ூÃÒ௃Ó⚪Ô⌕ὃÖ^×Ø·IµḄÙᵨ
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᪷FN-ᑖs~ÛÜÓ⚪ḄᐵÝ.24.᝞+
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äßAEåæçè0O8DÃ
äßBDåæçéF,ÀLBD=DF,äßCFஹBE.=22⚓/24⚓

22(1);êDB=DE(2);êáëCF%஺0Ḅᑗë.ூ@ᫀ௃(1)êìí᪆(2)êìí᪆.ூ᪆௃ூᑖ᪆௃(1)îêìDB=DE,ï◤êìNDBE=NDEB(2)îêìáëCF%஺OḄᑗë
ï◤êìBCLCFᓽூ௃:(1)
E&ABCḄᑁj,ZBAE=ZCAE,ZEBA=ZEBC,VZBED=ZBAE+ZEBA,ZDBE=ZEBC+ZDBC,ZDBC=ZEAC,NDBE=NDEB,'DB=DE.(2)äßCD.ீDAòᑖNBAC,AZDAB=ZDAC,•*-BD=CDBD=CD,VBD=DF,CD=DB=DF,AZBCF=90°,ABC1CF,.•CF஺OḄᑗë.=23⚓/24⚓

23ூÃÒ௃Ó⚪ὃÖ·IµḄᑁᑗᙊZᑁjᑗëḄᑨm.25.gõ✂ᨵ50øùúûüýþ
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ᜩḄ180ᐗᐰ
ᜩḄ10ᐗᨵ
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40ᐗᑣ3
#✂3Ḅᑭ567ᐗ8(2)0#✂9:ᑭ10640ᐗᑣ67ᐗ8(3)67#✂Ḅᑭ58ூ>ᫀ௃(1)9200ᐗ(2)300ᐗᡈ400ᐗ(3)C350ᐗᑭ5.ூE᪆௃ூGE௃H⚪ᑖ᪆K(1)᪷Mᑭ5=ḄOᑭ5*ᐭḄᦪST(2)U
Ḅaᐗ᪷MWXᐵZ[ᑡ(]^_EST(3)᪷M(1)`abᐵZᑡ(cᦪE᪆[᪷McᦪḄឋeSTᨬghi.H⚪E᪆Kপ0
40ᐗᑣ3
#✂3Ḅᑭ5(180+40-20)x(50-ᔊ)=9200ᐗ;(2)U
Ḅaᐗ᪷M⚪pTK(஺-20)(50-"st=10640,ET:a=300ᡈa=400,>:0#✂9:ᑭ10640ᐗᑣ300ᐗᡈ400ᐗ;(3)Uxᐗᑭ5w,11=(180-20+x)l50-^7ᑣy——X2+34X+8000=——(x-170)-+108901010v)x=170ᓽC350ᐗᑭ5.24⚓/24⚓