2022-2023学年北京市丰台区中考数学专项提升仿真模拟卷（一模二模）含解析

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2022-2023
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18(2)CD=4,CB=46cosNACF=[,EFḄb.ூ!ᫀ௃418-.᪆*422.ூ8.௃9⚪ᑖ᪆<41BD,ᵫAB0ḄBᑮNADB=90஺᪷_ḄឋBᑮNCFA=180஺-
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21ᙢ☢0Ḅ45F(ᜋ+Cᨵ13mḄCD(BஹFஹCᙠᩩI'0).(1)KᦟABḄ3M6(2)᪥⌕ᙠAஹEQRᢞTUVWXKAஹEQRḄCD(YZ[ᶇ᦮ᦪ).3152(_ὃᦪabsin22°--,cos22°~—,tan22°--)8165ூrstᫀ௃(1)12m(2)27mூᑖ᪆௃(1)✌ᐜ᪀⌼I+~+AAEM,ᑭᵨtan220=——Kᓽ.ME(2)ᑭᵨRtAAMEcos22°=—,KAEᓽ.AEூ௃b(1)EEM_LAB,ᚖM.ABx.ᙠRtaABFZAFB=45°,6.BF=AB=x,6.BC=BF+FC=x+13.ᙠRtaAEMZAEM=22°,AM=AB-BM=AB-CE=x-2,AMX_?2XVtan220-----bx«12.MEx+135ᦟḄ312m.(2)ᵫ(1)ME=BC=x+132+13=25.922⚓/<52⚓

22.,--oMEᙠRtAAAMEcos22"=——/AEcu15cc...AE=MEcos22325X—«27.166.AஹEQRḄCD27m.25.I'y=2x-5(x¢£y¢ᑖ¤¥A£B,¦ᱥ'y=-x2+bx+cḄ⚔MᙠI'AB0¨¦ᱥ'(I'ABḄ©ª¥N.জ¦ᱥ'Ḅ᪆6ঝNḄᙶ᪗£'°MNḄ±6²2³¦ᱥ'y=-x?+bx+cᙠI'AB0´µ,ᔲ·ᙠM,¸AOMN(AAOBº»¼½·ᙠI¾ᑏMḄᙶ᪗6½ᨵ·ᙠWÀÁᳮᵫ.ூrstᫀ௃²1³জy=-x2+5x-VঝN²y,—4³,275²2³·ᙠ.MḄᙶ᪗²2,-1³ᡈ²4,3³ூᑖ᪆௃²1³জᵫI'Ä2x-5(x¢£y¢ᑖ¤¥A£B,KAஹBḄᙶ᪗ᵫ⚔M(AÅᔠ᪷aÈÉᦪḄឋËK⚔᪆.25ঝὶÍy=2x—5£y=-x2+5x——KNḄᙶ᪗NNC_Lx¢ᵫÎÏÐᳮK4'°MNḄ±.²2³᪷aº»~+ḄឋËᐵmᡈnḄMḄᙶ᪗⌕ᑖÑÒÓÔ■923⚓/<52⚓

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24OA=^,0B=5,ᑣ0B=20A,AB=J஺/?+OB°=Û/2%NMON=90°.bABHMN,¨MN£ABÜ0Ḅ3ºÝÞAOMN(AAOBᨵßᐰ,.♦.áOMN(AAOBᨵº»ᨵâ⚪.OAOM1OM%NOMN=90஺.——=——ᓽ66=Ä0ã=rOBMN22V5ᑣm2+(2m-5)2=()2,m=2.AM(2,-1)6ᑣ*+(2n-5)2=(å)2,n=2,bm=4)ᑣMḄᙶ᪗,M(4,3).ᦑMḄᙶ᪗,b(2,-1)ᡈ(4,3).925⚓/<52⚓

252022-2023
ᓅὃᦪ⚗ᓣᔁ.⌱⌱²ᐳ12é⚪âᑖ36ᑖêé⚪3ᑖ³1.ëAABCḄ~ªᑁ+A,B,
2¨01=í+8,B=C+A,y=C+B,ᑣa,p,î┦+Ḅªᦪðñ²³A.1B.2C.3D.02.᝞2Ḅ~òᑖ¤,óᨵôᔣö1ᡠøḄùúÍûᑮḄ´☢²ᨵὃ⇋þÿᐸḄA.জঝB.@®C.ঝঞD.ঞ3.ᡃ“"ᙠ20089ᨴ26ᑭᓣᕒᙠ27ᓤ430ᑖᙠ"#ᙢᳫ⊤☢423()Ḅ*+ᡂ-*./0ᡃᜩ23Ḅ45ᔊ7ឋ9:.<423()ᵨ>?@ᦪB⊤CDEF.A.42.3xl04B.4.23xl02C.4.23xl05D.4.23xl064.G16.E-ᑖ᪆klᙠmᨴnὃḄᦪ?ᡂpXqlᡠᨵ?sḄᡂpᑖᦪᣚtᡂduvwxy᝞zᡠCᑡ{B`জqlBd|Bd}iᓰᐰl60%ঝDdᨵ4RᨵᑖḄᢥ120ᑖᑴঞᡂpᑖᦪᢥ120ᑖᑴḄᦪᙠ_eটᡂpᑖᦪᢥ120ᑖᑴḄᦪᙠ_eᐸḄ26⚓/52⚓

26A.জঝB.ঞটC.জঞD.জঞট7.᝞z-AB᜜5P,ABḄ.ḄBᐸA.¡dL.B.ᑁ┯¡dL.C.¢ᑁ¤⊡L¦.D.᜜5ᨵ¨©ᨵ5ᩩ«0ᩩ.8.5®ᙢᙳᒴḄ±²³Ḅ´M☢iḄᦪNᑖµ1,2,3,4,5,6.¼L½²³¾ᐸ¿iḄ☢iḄLMᦪNÀÁ◀}4ḄÃᦪᑖµ0,1,2,3Ḅᭆ᳛EPo,Pi,P2,P3,ᑣPo,Pl,P2,P3ḄA.PoB.PlC.PD.P239.Ëᙊ஺ḄÍÎ3,A,B,C_ᙠᙊ஺iZACB=60",ᑣÑABḄÒ3iA.2nB.ᐔC.—HD.2210.EÕDÖ×'‘Ú⁐ᝍÝ”Ḅßàáu1lᐰ±âsãäå᪛300ç.èwᑜêë9å᪛xçíᵫïðñå᪛Ḅᐰ±âså᪛Ḅò᩽ឋôõö▭øᦔ᳛úôEèwᑜḄ1.2ûxyúü20ᑖý+ᡂJä.ᑣ☢ᡠᑡþḄ,3002030030030030030020A.--------=----20C.-------------=—D.x601.2%x1.2xxx+1.2%6027⚓/52⚓

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3ᓅA.20!B.20I!C.150!D.20ḕ!12.KLMᦪy=x2-2mx+20160mFTᦪ3Ḅ2UᨵWXYA0xiyi3,B0X2,y23,C0X3,y33ᐸ^xi=-J5+m,X2=y+m,X3=m-1,ᑣyiஹy2ஹy3Ḅᜧᐵcd03Ayi

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312022-2023
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332--1+XḄ]lᙠᦪmn⊤p&'Ḅ5.Dᐗᨵhix+2>1B.-1QC.D.-102xூy]௃]ᨵh{-xZ-1}~2,]ᨵhx+2>l}x>-l,ᡠJᨵhiḄ]l2-1ᑡজBhBhJnᓰᐰ60%ঝDhᨵ4ᨵ}ᑖḄᢥ120ᑖᑴঞᡂᑖᦪᢥ120ᑖᑴḄ,ᦪᙠaiটᡂᑖᦪᢥ120ᑖᑴḄᦪᙠaiᐸ,&'ḄA.জঝB,ঞটC.জঞD.জঞটூ&'¡ᫀ௃C24+8+4ூy]௃জ——----------=60%&'5ঝDhᨵ4¥¦ᨵ§ᐸᐹ©ᑖᦪ┯H54+20+24+8+4ঞᐳ60ᙠDhஹChḄDᐳ24ᡠJ,ᦪᙠai&'5ট¬ᯠaiḄᦪ®¥ᡂᑖᦪᨵ'¯ᡠJᦪᨵ'¯.ᦑ&'Ḅᨵজঞ.ᦑ⌱a34⚓/e52⚓

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50ூᑖ᪆௃(1)ᙠy=mx?-2mx-3m56y=0,ᓽ89ᑮAஹB;<Ḅᙶ᪗.(2)ᐜᵨABCᦪE9ᑮFᱥHCiḄK᪆LᵫSAPBC=SAPOC+SABOP-SABOC9NOPBC☢RḄ⊤TL᪷VWXYᦪᨬ[ᳮ
].(3)ᐜ⊤^]DM?,2MB?,`ᑖ;abcdজNBMD=90஺#_ঝNBDM=90஺#jkBD_ᓽ8
9mḄ.ூlK௃Kdপ6y=0,ᑣmx?-2mx-3m=0m<0,x~-2x—3=0K9dX]=-1,x?=3.AA(-1,0)ஹB(3,0).(2)ᙠ.ᳮᵫ᝞ud:wFᱥHGḄ⊤TLy=a(x+l)(x-3)(aoO),31~C(0,)ᐭ89a=~.22113_.CiḄ⊤TLdy=-(x+l)(x-3),ᓽy=]x2-x-.1,3wP(p,-p2-p--),.3,327••SAPBC=SaPOc+SABOP-SABOC=——(-P---)+-_--42163327_a=;<0,.,.p=#SAPBC4216(3)ᵫC28dB(3,0),D(0,-3m),M(1,—4m),-,.BD2=9m2+9.BM2=16m2+4.DM2=2l.m+,/ZMBD<90°,WjkNBMD=90஺NBDM=90஺;abcdNBMD=90஺#BM2+DM2=BD2,ᓽ16m?+4+n?+1=9n?+9K9drr!1=-YZ,m2=4).1222NBDM=90஺#BD2+DM2=BM2,ᓽ9m?+9+n?+1=160?+4K9d-m2=1().£ᡠ01=-ᡈ"=—1#BDM'()(*.2+51⚓//52⚓

51+52⚓//52⚓