2022-2023学年天津市九年级下册中考数学专项提升模拟卷（AB卷）含解析

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2022-2023ᜩὃᦪ⚗ᓣᔁAᔁ
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44EFEFVCE>DE,,------<-------"CEDEtanZa?ᩩA_A4BCs^DEF,ூᫀ௃OF=6ᡈNC=60°ᡈ/8=35°ூᑖ᪆௃ᑭᵨG8HIḄᩩAᓽKLM.ூ௃(I)ODF=6PᑭᵨS4SKQR.(2)ONC=60஺ᡈNB=35஺Pᑭᵨ444K.T⚪ὃWG8HIXYQRᩩA⚪ᐵZ.13.[%᝞'ᙠ]^AB=4,BC=3,,8!ᙊ`r!ab-ᙊcQ8ᨵeᐳ,ᑣgḄhj.ூᫀ௃3AB>BC,᪷:,ᙊḄmnᐵoᑮ34q<5.ூ௃"]ABCD^AB=4,BC=3,045⚓/360⚓

45D:•BD=AC=^AB'+BC2=A/42+32=5-AD=BC=3,CD=AB=4,:,B!ᙊ`-ᙊOBCDᨵeᐳ,...OBḄabrḄhj"34r45.ᦑ3WrW5.T⚪⌕ὃW6,ᙊḄmnᐵ]Ḅឋ.ab!r,,ᑮᙊ`Ḅ!d,ᑣᨵ"Od>rP,ᙠᙊ᜜Od=i•P,ᙠᙊOdlPyxḄᜧ¡¢.ᑏ¤?¥ᔠᩩAḄᦪ".ூᫀ௃y=-x+2ᫀ©ᨵூ௃জ'1,1,ঝOx>lP.yxḄᜧ¡¢ª?ᦪ᪆!y=-x+2,ᦑᫀ!y=-x+2ᫀ©ᨵ.15.ᙠA/BC^N/=45°AB=y[6>BC=2,ᑣḄ!.ூᫀ௃6+1ᡈ0-1ூ௃+,B-BD±AC/,D,ᑣNADB=/DBC=90஺VZA=45°,.BD=AD=AB•sin45°=#x=¶2VBC=2,.'.CD=ylBC2-BD2=1-AAC=AD+CD=V3+1ᡈAC=G-1,ᦑᫀ!JJ+1ᡈ¹-1.046⚓/360⚓

46B“CDC16.ᙠº☢»8ᙶ᪗xOy^½ᱥ¿y,=x2+2x+2KÀ-½ᱥ¿y=-x2-2x-1ÁÂ2'ḄÃᓄºÅஹÇᢚஹÉÊoᑮḄᑏ¤Ëᵫ½ᱥ¿Ìoᑮ½ᱥ¿᜜Ḅ+Í".ூᫀ௃½ᱥ¿y,ᐜÏ,-1,0ÉÊ180°,ᯠÒÓᔣºÅ1?ᓫmÖᓽKoᑮ½ᱥ¿ᡭᫀ©ᨵூ௃y]=x"+2x+2=x+12+1,y=-x2-2x-1=-x+12,2½ᱥ¿”ᐜÏ,-b0ÉÊ180°,ᯠÒÓᔣºÅ1?ᓫmÖᓽKoᑮ½ᱥ¿?ᦑᫀ!½ᱥ¿/ᐜÏ,-1,0ÉÊ180°,ᯠÒÓᔣºÅ1?ᓫmÖᓽKoᑮ½ᱥ¿Wᫀ©ᨵ.T⚪ὃW6½ᱥ¿'ÃᣚᐜÝ᪆Ã!⚔,ᯠÒ᪷:ßÃᣚḄ+Í⚪ḄᐵZ.Gஹ⚪ᐳ12⍝⚪ᐳ68ᑖᐸ^017-23⚪â⚪5ᑖ024ஹ25⚪â⚪6ᑖ026ஹ27ஹ28⚪â⚪7ᑖ5x-2<3x+617.©ᨵäå",æ5——<1+4%I2ூᫀ௃-l-l,ð©ᨵäåḄí!—1

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503Ä⚪ὃ=Ḅ!Ḅᑨ@ឋBÅ᪷6⚪ÆᑨÇAABESAACD!:⚪ḄᐵF23.᝞aᡠ¶ÈÉÊËÌ9>Íν☢ÏABḄ®[ᑖÐᔠÒᨵḄÊᕒÍ%-ÏÕÖ×940ØᨵḄÊᕒᙠᦟÚÛᡝᜐÍ%Ï⚔ÞAḄß930஺¹ÞBḄà910஺áâ᪷6C|ᦪ6xÏABḄ®[.ãᑮ0.1Øåãæὃᦪ6wsinl0%0.17,cosl0°~0.98,tanl00~0.18,y/2~l.4bç=1.73ூᫀ௃30.3Ø.ூ௃v⚪ᑖ᪆wèDÒDE_LAB'E,ᙠRtZ^ADE
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NDEB=900,tanZ2=——#Z2=10°,DE1.BE=DExtanZ2=40xtan10o^40x0.18=7.2é8=éᱏ+5ë23.1+7.2=30.3Ø.k51⚓/m60⚓

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53U⚪ὃWX-./0ᦪY0ᦪḄZᔠ\]^_`a0ᦪḄឋc⚪ᐵe.26.hiA᝞<ᙠZUBCnAB=AC,o/Cp%qr஺஺BC஺t஺r஺஺Ḅᑗ&E,/CḄxy&z.(1)|ADEVAB-.(2)atanNBDE=LCz=3,஺zḄy.2ூᫀ௃(1)᪆(2)6ூ@௃~⚪ᑖ᪆A0D,ᑣᨵODJ_EF,ᯠ+|OD஻ABᓽ45(2)AD,ᑣᨵ/ADB=90°,t|FCDs^FDA,45FCAFD=CDADA,,᪷?tanZBDE=-,tᓽ45.2~⚪᪆A(1)OD.ᑗ஺஺஺.•.OO_LEF.OD=OC,.ZODC=ZOCD,'1AB=AC,AZABC=ZOCD,1.ZABC=ZODC,1.AB//OD,1.DELAB-,Q54⚓/T60⚓

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57DMII28.ᙠ¨☢%ᙶ᪗âxOynåᱥ&y=|è+bxA(-3,4).(1)bḄ(2)tArxêḄ¨©&åᱥ&ëPB,ᙠ%&ABHìPP,rAᐵ%&OPḄíîCজNCា³ðᙠXêO%&0PḄ⊤ò2ঝôBC,BCḄᨬ.ூᫀ௃(1)-3(2)জ0PḄ⊤ò2pX=2öᡈு=PøঝBCḄᨬp4ù—5.ூᑖ᪆௃(1)"Aᙶ᪗#ᐭ᪆2ᓽ45(2)জᵫíîឋ4iOA=OC,AP=CP,ᵫAP஻OC,45N1=N2,,᪷?êíî45NA0P=N2,ÎÏ5NAOP=Z1,5ᑮAP=AO,,᪷?Aᙶ᪗ᓽ45APḄyÎÏ5PḄᙶ᪗ᑭᵨü'âᦪ¿ᓽ45᪆2ঝo0pᙊþ0Aypÿ
஺0,B0,00C,BCḄᨬ.1#ூ௃(1)ᱥ=A(-3,4),&x=-3,(ᐭy=^/+./ᑣ4=gx9+bx(-3),458⚓/860⚓

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00,B0,00C,BCᨬ,Qy=4(ᐭy=[x]-3,Exi=12,X2=-3,B(12,4),:.0B=4jiU//BCḄᨬI4R—5.S⚪ὃVWXYZᦪஹ]=>Ḅឋ^_/⚪Ḅᐵab᪷d⚪efghᔠ⚪eḄjk.459⚓/860⚓

59460⚓/860⚓