2022-2023学年安徽省淮南市中考数学专项提升仿真模拟试题（3月4月）含解析

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2022-2023
ḕᓭὃᦪ⚗ᓣ⚪3ᨴஹ⌱⌱ᐳ13⚪⚪3ᑖᐳ39ᑖ1.ᨵᩩ3,4,ᑣḄ┦!A.37°B.41°C.37°ᡈ4rD.*+,ᫀᙳ/ᨵ02.230OḄ675,9Pᑮᙊ=஺Ḅ?@6,BC9PD஺஺ḄEFᐵHIA.9JᙠOO+B.9Jᙠ஺஺ᑁC.9Jᙠ஺஺᜜D.NOPQ3.R3஺ஹ஺SḄ67ᑖT4U6,ᙊ=?aa=8,ᑣ஺aD©aḄEFᐵHIA.ᑁᑗB.[\C.᜜ᑗD.᜜@4.ᙠaABC]ZC=90°,NA=72°,AB=1O,ᑣACḄ!ᑮ0.1A.9.1B.9.5C.3.1D.3.55.23aᱥcy=-x2+lḄ⚔9P,9AIj▲ᑁlmnoᦪqj+9r9AsXuḄvwc\mnoᦪqjx9B,ᑖTr9BஹAsXuḄᚖcᚖzᑖTCஹD,{|PAஹPD,PD\ABx9E,Z\PADD4PEA[ᔩ/A/co|\A./ᨵ[B.[C.ᨵAB=AD[D.NOPQ6.23஺஺Ḅ67r,ᙊ=஺ᑮcIḄ?@d.RcID஺஺ᨵ\9ᑣᑡ|PḄIA.d=rB.OWdWrC.d'rD.d

1ூ¡⚗£ẚ௃¥¦§ᔁC.x<-l©x>5D.x<—1ᡈx>58.23mnoᦪy=x-h
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2ூ¡⚗£ẚ௃¥¦§ᔁ11.Rmnoᦪ^=/+ÇḄqjḄ0ÈuI92,0©vwxyuḄc,ᑣᐵxXḄÌÉ2+Ê=5Ḅ•A.X]=0,%2=4B.Xj=1,X[=5C.Í=1,X2=—5D.X1=-1X2=512.᝞qmnoᦪy=ax2+bx+cḄqjᙠᑡÎO]Ïজac<0ঝÌax2+bx+c=0Ḅ᪷Ixi=-1,X2=3ঞa+b+c>0ট×x>lyØxḄÙᜧÛÙᜧ.PḄᨵÏ.J/13.᝞qᙠRS/BC]ZJCS=90°,CDLAB,ᚖzDAC=#,BC=2,ᑣsinNNCDḄ®ஹ⚪ᐳ10⚪ᐳ30ᑖ14.23aᱥcy=xz-4x+3,᝞â9P0,5D9QᐵxlaᱥcḄ0Èu0ÈBC9QḄᙶ᪗I.15.æoᦪy=NḄqjᔣèvé2ᓫEëoᦪ¶ḄqjæPD½ᔠ᪀ᡂïqjcy=ðñïqjònóëÀḄ[ᑣô=3

3ூ¡⚗£ẚ௃¥¦§ᔁ16.23aᱥcy=-*x2-3x9(-2,m),BCm=.17.23ᙊḄ67I6cm,ᑣ120஺Ḅᙊ=ᡠ0ḄöIcm.18.ᡧḄ☢ù67cm2,öᐔcm,ᑣlᡧḄ67.119.ᙠv☢ᙶ᪗H]æoᦪy=-2x2Ḅqjᐜᔣèvé1ᓫEüÍᔣ+vé5ᓫEüᡠëqjḄoᦪ⊤ýI.20.᝞qCA1AB,DB1AB,23AC=2,AB=6,9PÁcBD+þ9*CP7s21.23oᦪy=(k-3)x2+2x+\ḄqjDxuᨵ\9ᑣÿḄ
.22.ᓫ15ᐗḄ25ᐗᙳᜩ"#$8%&'1ᐗᙳᜩ"(#$2.Ḅ)ᐗ+ᙳᜩḄᑭ-.23./XOAB./0(1234Ḅ56⚔8A,B9:Ḅ0⚔8Ḅ;<2=OABḄ6ᑁ<70°,ᑣ+0(12Ḅ1ᦪ____.;ஹDE⚪(ᐳ5⚪Iᐳ51ᑖ)24.᝞M00ḄNOABᚖNQCDR8E,8FᙠABḄTUVWXZBCF=NA.(1)YZNVCF.0஺ḄᑗVI(2)஺஺Ḅ]O5,DB=4.Ysin/DḄ.25.᝞MAB.OOḄNOAC.Q]OODJLACR8E,^8DḄᑗV9BATUV_R8F.(1)YZZCDB=ZBFD4

4ூa⚗cẚ௃fghᔁ(2)AB=10,AC=8,YDFḄU.26.jᑭklmn■pqrs)tjuᜧwxmyᜧwḄz{☢.}2ABCD.᝞Mᡠjᚁ☢ABḄU16ZB=60°,jᚁ☢CDḄU16myᜧwḄz{☢}2ABED,CEḄU8.(1)◤myḄᜧwU150Y◤⌕((2)YmyḄᜧwjᚁ☢DEḄᚁ.27.᝞Mᙠ=ABCZC=90°,NBACḄᑖV_BCR8D,DE_LAD,_ABR8E,AE0OḄNO.(1)ᑨBC9஺OḄᐵZḄI(2)YZ=ABDsaDBEI(3)co=2.,AE=4,YCD.328.᝞M1,ᦪyi=(x-2)(x-4)ḄM¡9x¢_RAஹB58(8Aᙠ8BḄ£¤),ᐸt¦¢19x¢_R8C,:Ḅ⚔88D.(1)ᑏ$8DḄᙶ᪗.(2)8Pᙠt¦¢1WR8CWXCP=2CD,/P⚔8Ḅᦪy=ax2+bx+c(a^0)2ḄM¡^8A.জh«ᦪy2=ax2+bx+c(a¥0)ḄM¡^8BI5

5ூa⚗cẚ௃fghᔁঝ8Rᙠᦪyi=(x-2)(x-4)ḄM¡Wᑮx¢Ḅ¶·d,8RḄᙶ᪗,ᦪy2=ax?+bx+c(a0)ḄM¡WᨵXÀᨵ;68ᑮx¢Ḅ¶·ÁR2dIঞ᝞M2,0cm<2,^8M(0,m)rx¢ḄxVᑖÆ_ᦪyi=(x-2)(x-4)ஹy=ax2+bx+c(a/0)ḄM¡R8EஹFஹGஹH(8EஹGᙠt¦¢1£¤)^8Hrx2¢ḄᚖVᚖÍ8N,_ᦪyi=(x-2)(x-4)ḄM¡R8Q,AGHNs^EHQ,YÓᦪmḄ.M1M26

6ூa⚗cẚ௃fghᔁ2022-2023
ḕᓭὃᦪ⚗ᓣ⚪3ᨴஹ⌱⌱Õᐳ13Ö⚪IÖ⚪3ᑖᐳ39ᑖ×1.6N<;<2ᨵ5ᩩ1U3,4,ᑣÚÖḄ┦<ÜÕ×A.37°B.41°C.37°ᡈ41°D./WEᫀᙳäᨵtூ0åEᫀ௃CூæD௃h⚪D᪆জ3ஹ4.N<1♦.•5N<13,4,é1U=-^32+42=5,3ÚÖḄ┦<ᡠtḄN<13,ᑣᐸ0QëIঝé1U4,ᑣÚÖ1=542-3?=2.65,ÚÖ1ᡠt┦<0QÜ=íî=0,6625,4ᑭᵨðñᘤYó<Ü37஺ᡈ41°.ᦑ⌱C.2.OOḄ]O5,8öᑮᙊø஺Ḅ¶·6,ùú8ö9஺஺Ḅᐵ.Õ×A.8öᙠ஺஺WB.8öᙠOOᑁC.8öᙠ0஺᜜D.üýå)ூ0åEᫀ௃CூæD௃þ஺ᱏ6>5,ᡠ஺஺Ḅᐵᙠᙊ᜜.ᦑ⌱C.ᙊḄᐵ.3.஺4ஹ0aḄᑖ"#4$6,ᙊ%&aa=8,ᑣ0a஺aḄᐵ*A.ᑁᑗB./0C.᜜ᑗD.᜜2ூ456ᫀ௃B7

7ூ9⚗;ẚ௃=>?ᔁூAB௃?⚪ᑖ᪆஺஺1ஹ஺஺2ḄEᑖ"#4$6,ᙊ%&஺1஺2=2,஺01ஹ஺஺2ḄF$#5,GH#1,I1<஺G2=2<5,ᡠJᙊ/0ὃJᙊḄᐵLὃMJᙊḄᐵNᑭᵨJᙊḄᙊ%&$JᙊḄFHᡈὅF$NᩭᑨUJᙊḄ4.ᙠAABCVNZC=90°,ZA=72°,AB=10,ᑣWACḄXY#(ᑮ0.1)()A.9.1B.9.5C.3.1D.3.5ூ456ᫀ௃CூAB௃ᑖ᪆ᙠRtZ\ABCVN᪷]^_`ᦪḄbcN᧕eABஹACf/AḄᐵNgIhije6ᫀ.B6B᪷]⚪kᑣAC=AB?cosA=10xcos720=3.1lᦑ⌱C.5.mnoᱥqy=-x2+lḄ⚔#P,As▲ᑁuvw`ᦪxsyzN{A|x}Ḅ~q0vw`ᦪxsB,ᑖ"{BஹA|X}ḄᚖqNᚖᑖ"#CஹD,PAஹPD,PD0ABE,ZXPAD4PEA/ᔩ()ுA.ᨵ/B./C,GᨵAB=AD/D.5bூ456ᫀ௃BPFPAூAB௃?⚪ᑖ᪆A(x,-x2+l)᪷]⚪kjPAஹPDஹPEḄNIe=,PAPD8

8ூ9⚗;ẚ௃=>?ᔁ/APE=NDPA,NZXPADs/iPEA.ᦑ⌱B.ὃvw`ᦪᔠ⚪.6.mn஺஺Ḅ#r,ᙊ%஺ᑮEqIḄ&2#d.EqI00ᨵ0Nᑣᑡ45Ḅ*A.d=rB.0rD.d5C.x<-l®x>5D.x<-lᡈx>5ூ456ᫀ௃DூAB௃ᑭᵨvw`ᦪḄ¯°ឋNjexsx}Ḅ²z£0ᙶ᪗Nxsjeax2+bx+c<0ḄBᵫxse¯°}x=2,ᐸVz£Ḅᙶ᪗#*5,0
,xsx}Ḅ²z£0ᙶ᪗#*-1,0
.ᵫxsjnax2+bx+c<0ḄBᓽy<0ḄBNᡈx>5.ᦑ⌱D.8.mnvw`ᦪy=x-h
2+1h#µᦪNᙠ¶·¸xḄ¹1SXS3Ḅº»Nᐸ¯¼Ḅ`ᦪyḄᨬ§#5,ᑣhḄ#*9

9ூ9⚗;ẚ௃=>?ᔁA.1ᡈ-5B.-1ᡈ5C.1ᡈ-3D.1ᡈ3ூ456ᫀ௃Bூᑖ᪆௃À¯°}ḄᨵÁNjÂ.ூAB௃জx=lNyÇeᨬ§5,je:*1-Aஹ1=5,BeÉ=-1ᡈA=3*Êlঝ1QW3<஻N¤x=3NyÇeᨬ§5,je*3T2+Ó5,Be஺=5ᡈ/?=1*Ê.yN஻Ḅ#-1ᡈ5,ᦑ⌱B.Ö⚪×⌕ὃMvw`ᦪḄឋÙ$ᨬN᪷]vw`ᦪḄឋÙ$ᨬᑖÚÀB⚪ḄᐵÛ.ᵫB᪆¬jnu`ᦪᙠÜÉÇeᨬ§1ஹNyÝ*ḄßᜧIßᜧஹ¤x<஻NyÝxḄßᜧIá§N᪷]1«3N`ᦪḄᨬ§#5jᑖ᝞J¥º»জY1&W3,x=lNyÇeᨬ§5lঝ1WXW3V஻!¤x=3NyÇeᨬ§5,ᑖ"ᑡᐵ/?ḄåæBᓽj.9.mn`ᦪè4x,vw`ᦪ”=2x2+2,ᙠêᦪìᑁN¯xḄÁz£NíJ£`ᦪᡠ¯¼Ḅ`ᦪ#ywNᑣᑡᐵ45Ḅ*A.VI>yiB.yi>y2C.yi

10ூ9⚗;ẚ௃=>?ᔁ10.᝞xNᙊoḄOA=4,P஺AùXqyzNqúOPḄᚖE~ᑖqᑖ"0OPஹᙊ஺BஹCJNûqPC0ᙊ஺D.PA=x,CD=yNᑣ¢⊤ôyxḄ`ᦪᐵḄxs*ூ456ᫀ௃AூAB௃?⚪B᪆|OE_LCD,ᚖ#E,᝞x1,11

11ூ9⚗;ẚ௃=>?ᔁnVZP=ZP,ZPBC=ZPEO=90°,.,.PBC^APEO,.PBPC••‘PB=g0P=g(x+4),PE=PC+CE=4+y,x+4•2_4"4Zx+4'+2.y=x2+2x-4(472-4ᑣᐵ;xḄABC2+6%=5ḄGH()•A.%!=0,x=4B.J=1,஽=5C.X,=1,x=-5D.Xj=-1,22%2=5ூOPQᫀ௃DூTG௃•)*+ᦪy=x2+bxḄ12Ḅ34567(2,0)89:;y5Ḅ<=,••Vᱥ=Ḅ345H<=x=2,ebbXYJ----=---=2,2a2G[\b=-4,/.x2+bx=5HPHx2-4x-5=0,ᑣ(x-5)(x+l)=0,12

12ூ_⚗aẚ௃cdeᔁG[\Xl=5,X2=-l.ᦑ⌱D.g⚪ὃjkVᱥ=lx5Ḅm7

13)*+ᦪoax2+bx+craஹbஹc6tᦪ>a#vvlx5Ḅm7ᙶ᪗y⚪zᓄHᐵ;xḄᐗ)*ABḄy⚪.12.᝞1H)*+ᦪ~=2*2+6*+<:Ḅ12>ᙠᑡ/\জac<0ঝABax2+bx+c=0Ḅ᪷6xi=-l,X2=3ঞa+b+c>0টx>l>yxḄᜧᜧ.OPḄᨵ\.ூOPQᫀ௃ঝটூTG௃e⚪G᪆\᪷12[஺>0,஺<0,ᑣ᝞<0,ᦑজOP.)*+ᦪlx5Ḅm76r-1,0vr3,0v,ᑣAB+6x+c=0Ḅ᪷H=-I,/=3,ᦑঝOP.x=l>y=a+6+c<0,ᦑঞ┯.3456x=i,x>i>yxḄᜧᜧ.ᦑটOP.ᦑQᫀHজঝট13.᝞1>ᙠRt2U8C>NACB=9Q°,CDA.AB,ᚖ¢H஺.(/C=«,8c=2,ᑣsin//COḄ¦Hrv2^5
2L---DR.----C.——n1).—3523ூOPQᫀ௃Aூᑖ᪆௃ᙠ<ªABC>᪷«¬ᳮᓽ°[48,NB=N4CD,ᓽn°sin/ZC஺zᓄH°si.13

14ூ_⚗aẚ௃cdeᔁூTG௃ᙠ<ª>᪷«¬ᳮ[\AB=ylC2+BC2=7(V5)2+22=3.A•"NB+NBCD=90஺,/4CD+NBCD=90஺,:/B=/ACD,".smZACD=sinZB=—=—.AB3ᦑ⌱\A.g⚪ὃjkG<ª±ª²±ª+ᦪḄ³ᵨ>⌕¶·¸¹º»ª¼½Ḅᐵ¾>¿À〉.ஹ⚪(ᐳ10⚪ᐳ30ᑖ)14.ÂÃVᱥ=y=x2-4x+3,᝞Ä7P(0,5)l7Qᐵ;ÅVᱥ=Ḅ34534>ÆÇ7QḄᙶ᪗6.ூOPQᫀ௃(4,5).ூᑖ᪆௃✌ᐜPVᱥ=Ḅ345>ᯠË᪷347ḄឋÍG⚪ᓽ.ூTG௃Vy=x2-4x+3Ḅ345Hx=2,.•.7P(0,5)ᐵ;ÅVᱥ=Ḅ345347QḄᙶ᪗H(4,5),ᦑQᫀH(4,5).15.Î+ᦪy=NḄ12ᔣÐ9Ñ2ÒᓫÔ[+ᦪyḄ12>Îylyᔠ᪀ᡂØ12><=y=mÙØ12Ú*Û[±ÜḄÝÞß>ᑣm=ூOPQᫀ௃m=4ᡈ>4ூTG௃e⚪G᪆\•)*+ᦪy=x2Ḅ12ᔣÐ9Ñ2ÒᓫÔ>9ÑËḄG᪆áH\y=(x-2)2,ny=mâᐭy=x2[m=x2,G[x=±4m,ny=mâᐭy=(x-2)?[m=(x-2)2,G[x=2±஻i>0G[m=—,4m>l>ᑣ2+JH=-(2-&i),G[m=4,ᦑQᫀHæᡈ4.416.ÂÃVᱥ=y=-gx?-3x7(-2,m),ÆÇm=.14

15ூ_⚗aẚ௃cdeᔁூOPQᫀ௃4ூTG௃e⚪G᪆\•••y=*x2-3x7(-2,m),.".rn=-yX22-3X(-2)=4,ᦑQᫀH4.17.ÂÃᙊḄêë66cm,ᑣ120஺Ḅᙊìªᡠ3ḄîÝ6cm.ூOPQᫀ௃4nூᑖ᪆௃<ïᑭᵨᡧ²ḄîÝòáóôᓽ[õö÷.ூTG௃G\ᵫ⚪ùÃ>r=6cm.n=120.,nnr120^x6,/=---=--------=47r(cm),180180ᦑ47c.ú⚪û⌕ὃjkᡧ²ḄîÝòá>Gg⚪Ḅᐵü6¶ýᡧ²ḄîÝòá.18.Òᡧ²Ḅ☢ÿ67cm2,nm,ᑣᡧḄ.1ூᫀ௃12cm.ூ௃⚪᪆!r,•••$ᡧḄ!ncm,ᡧḄ☢&6ncm2,.,1..6n=yxnxr,/.r=12.ὃ-1.ᡧ☢&Ḅ./02.Ḅ./.19.ᙠ3☢45ᙶ᪗89:;<ᦪy=-2x2Ḅ?@ᐜᔣC3D1$ᓫFG:HᔣI3D5$ᓫFG:ᡠL?@Ḅ<ᦪ⊤NO!.ூᫀ௃y=2(x-1)2+5.ூ௃⚪ᑖ᪆ᵫ“VWCX"ḄZᑣ[\:]ᱥ_y=-2x2Ḅ?@ᔣC3D1$ᓫFᡠL<ᦪ?@Ḅᐵ8O!y=-2(x-1)20ᵫ"IWaX”ḄZᑣ[\:]ᱥ_y=-2(x-1)2Ḅ?@ᔣI3D5$ᓫFGᡠL<ᦪ?@Ḅᐵ8O!y=2(x-1)2+5.ὃ-cd<ᦪ?@efghᣚ.15

16ூj⚗lẚ௃noᔁ20.᝞?:CA±AB,DB±AB,r\AC=2,AB=6,-Ps_BDIt-:uCP4v0O,-Pwtx:y0Oe_zABᨵ|ᐳ-:ᑣBP~ூ௃⚪ᑖ᪆✌ᐜᑨABe஺஺ᑗx:PBḄ~:ABe஺஺ᑗE,஺E,ᑣOEJ_AB,-CvCF_LPBF,ᵫCA_LAB,DB±AB,LᑮAC஻OE஻PB,ABPC!:LCF=AB=6,ᙠ455PCF9:ᵫᳮᑡ.⚪᪆ABe஺஺ᑗx:PBḄ~:᝞?:ABe஺OᑗE,OE,ᑣOE_LAB,...AC஻OE஻PB,ABPC!:.♦.CF=AB=6,VCO=OP,r.AE=BE,PB=x,PC=2OE=2+x,PF=x-2,...(x+2)2=(x-2)2+62,16

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25ூ/⚗1ẚ௃45)ᔁ01022022-2023
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37ூY⚗[ẚ௃]^_ᔁூ௃_⚪᪆9I9x3=8y3=7z3=k3,ᑣkkkX=W(y=W,F987]fg1=—I---1—=—(9-^9+8,^8+7-^7)xyzkᦑk=9j+8W+7Xᦑ,9x)2+(8k2+☢VW+X+Y)=Z=kl+(8P2l+(7Z2)4=+W+Y)==k-ᦑSᫀn9o+8p+7ᶭ39a+8[+7V10.rs9(t^)3=.yூQRSᫀ௃tuyூᑖ᪆௃ᑖvḄwxᑖyᑖzᑖ{wxrsᓽ}8ᑮ.ூ௃9v=y=----y3'⚪ὃlᑖvḄwx⚪Ḅᐵwxᑣ.11.vᑖ93஻-646+3஺஻=.ூQRSᫀ௃3a(a-b)2ூᑖ᪆௃✌ᐜv3a,ᑭᵨᐰ'xvᑖᓽ}.ூ௃3a3-6஺2%+3ab2,=3aCa2-2ab+b2\=3aCa-b)2.ᦑ3aCa-b)2.37

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49ூ_⚗aẚ௃deᔁSᓟH2406-180஺120°606--r-in-Cf—OO"•-O>0|60120180240tᑖூghᫀ௃j1kLi⊤BᑮᵬᙢḄḄᐵ2BḄ1.5ᓟ/ᑖ3si=-1.5t+330,s=t;42,-./030ᓟ5132ᑖ1.AஹB2/0⍗.ூ67௃9⚪ᑖ᪆<3=>᪷@AᦪCDḄEᔣG⚪HIJL⊤8ᑮᵬᙢḄḄᐵ2ᵫLN60ᑖ1ᜐQḄᙶ᪗IJTUG.VWXY3ᐜᑖ[\]Aᦪ.ᑭᵨAᦪCDNḄ`JQ.aᵨbcᦪdIXYAᦪ7᪆e43fAᦪCDXY.=120sḄg.hiᓽIX75X]AᦪCDḄkQᙶ᪗ᓽIX7.9⚪7᪆<1AᦪClIJ8ᵫmᙢnoᵬᙢ.ᦑL⊤BᑮᵬᙢḄḄᐵ2330-240-60=1.5ᓟ/ᑖ3\LqS1=^+6,tQ0,330,60,240uᐭYk=—15,b—330.ᡠxS]=-1.5/+330.L2Sz=k't,tQ60,60uᐭYk'=1.ᡠx52='4{1=120,ᓰ=150,$2=120.330-150-120=60ᓟ;ᡠx2,-./060ᓟ<5{S[=$2,—1.5/+330=t,7Yf=132.49

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53ூ⚗ẚ௃ᔁ2lnx=lᡈx=--2,a24ᓽa<-2a,Aa<0,᝞1,!ᱥIJO0DE,2a2".E(-y,-3),24VM(1,0),N(--2,--6),aa4DMNḄ☢72S,,i,2ஹ9஺<ஹ27327..S=SADEN+SADEM=Y|(--2)—-(-3)|=--------------a,2a44a8(3)a=l;,,i9!ᱥḄl᪆2y=-x2-x+2=-(x+)+—,24y=—x2-x+2ᵫீ<,y=-2x-x2-x+2=-2x,lnxi=2,X2=-L".G(-1,2),53

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