2022年浙江省温州市苍南县中考数学二模试卷（附答案详解）

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2022
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6¯ᫀC°᪆1.ூ¯ᫀ௃Aூ°᪆௃°᪷µᨵᳮᦪḄ¸¹¹ᑣ3x(—2)=—6.ᦑ⌱A.᪷µᨵᳮᦪḄ¸¹¹ᑣ°½¾⚪.À⚪Á⌕ὃÂᨵᳮᦪḄ¸¹ÃÄÅÆᨵᳮᦪḄ¸¹¹ᑣ~°½À⚪ḄᐵÇ.2.ூ¯ᫀ௃Cூ°᪆௃°300000000=3x108.ᦑ⌱C.È1Éᦪ¹Ḅ⊤j¢Ê?axIO”Ḅ¢Êᐸ1ËÌË10,n?᦮ᦪ.ÎÏ"Ḅ,⌕ÑÒÓᦪÔᡂarᦪÖ×Ø]snḄÙÚrᦪÖ×ḄsᦪÛÌ.ÓᦪÙ210n~Ü᦮ᦪ.¾⚪ὃÂÈ1Éᦪ¹Ḅ⊤j¹.È1Éᦪ¹Ḅ⊤j¢Ê?axionḄ¢Êᐸ1W|a|10,n?᦮ᦪ⊤jᐵÇ⌕ÜÎÎÏaḄÝÞnḄ.3.ூ¯ᫀ௃Cூ°᪆௃°ß`☢Ñ~|=áârÜ¢.ᦑ⌱C.᪷µãä~ß`☢ÑᑮḄ¢ᔠLᔠ/ᑨÏᑣç.À⚪ὃÂØáäḄèéãä~ßᱥ/Ḅ`☢ÑëᑮḄä.4.ூ¯ᫀ௃Dூ°᪆௃°ìஹÚ|஺3í~Ìî⚗íðᔠñᦑAíòᔠ⚪ó.BஹÓÊ=஺9,ᦑ8íòᔠ⚪ó.CஹÓÊ=஺3,ᦑCíòᔠ⚪ó.஺ஹÓÊ=a௃2,ᦑ஺òᔠ⚪ó.ᦑ⌱D.᪷µ᦮ÊḄuôõöஹ¸◀¹õö¹ᑣᓽ端ᫀ.

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ᵬ)Gᑖᑮ,-Ḅᭆ᳛:=i(1);᪛F<%ᐳᨵ6!ḄPQ%ᵬ)ᑖᑮ,-Ḅᨵ4"#%.)ᑖᑮ,-Ḅᨵ4"#%0)ᑖᑮ,-Ḅᨵ4"#%Sᵫᭆ᳛UVWXᔜ3ᭆ᳛%ᓽXᫀ9(2);᪛F<%ᐳᨵ6!ḄPQ%[Xᵬ)\Gᨵᑖᑮ,-Ḅ"#ᦪ%Sᵫᭆ᳛UVᓽXᫀ.]⚪ὃ_`abUcឋஹ᪛F

17V8C஻x¥ᱥ¢³tC,•••CḄᙶ᪗7(4,3)9(2)µC(4,3)¶ᐭy=kx-l,4k-1=3,**•k—1,,¦¢4cḄ᪆V7y=%-1,••A7ᱥ¢Ḅ⚔%%4Ḅ¹ᙶ᪗72,ª§=2«%y=%—1=2—1=1,.AḄᙶ᪗7(2,1),µ4(2,1)¶ᐭy=ax2—4ax+3=1'%4Q—8Q+3=1,iAQ=t.2ூ᪆௃(1)ᑭᵨ£¤¥UVᓽW9ᑭᵨ£¤ឋWCᙶ᪗9(2)µ(1)'WḄC¶ᐭ¦¢᪆V%W/cº%µ4¹ᙶ᪗¶ᐭW4»ᙶ᪗%¼½µ4Cᙶ᪗¾¶ᐭ᪆V%ᓽW.]⚪ὃ_`¿ÀÁᦪḄ<Âឋ%tÀÁᦪḄ<Âឋ%ÃÄÅ¿ÀÁᦪḄ<Âឋ%tÀÁᦪḄ<Âឋ⚪Ḅᐵ.22.ூᫀ௃(1)Æ:OB,0C,vAB=AC,OB=OC,4DBCḄᚖ¦cᑖ¢%:./.AEC=Z.DEC=90°,BE=EC,••AB=AC,•AB—AC»:.ACE=ADC,ACE^LCDE(2):BE=EC=gBC,AE=BC,I18⚓%ᐳ23⚓

18•••CE=-AE,2…LCE1tanZ-CAE=—=t%AE2•AD஺஺Ḅ¦È%Z-ACD=90°,,CD1ᙠRt,ACD,tanZ-CAD=CO=a,AC=2Q,AAC2+CD2=AD2,A2a
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yz_Tᐵ{|ᑡIᐗ?L&MN32
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᝞1,20⚓ᐳ23⚓

20CE1஺4KE,•••OB1OA,-ABO,CE_AE_ACOB~OA~ABfBD=CD=AC,CEAE1~~~~——,363CE=1,AE=2,PE=0A-AE-0P=4-t,POB=PEC=90°,PBO+OPB=90°,BPC=90°,•OPB+4CPE=90°,•OBP=CPE,POB~ACEP,OB_PE**OPߟCE934-t•-=——,t1•0=1,£i=3,ᓽt=1ᡈ3(3)জPCP'஺F,PC=PD,••PD=CD,pc=PD=CD,PCB=60°,pD-••—=tanz.PCB=tan600=V3

21ঝ᝞2,CE10AKE,CE=a,AE=2a,:.AC=V5a>PE=6—t—2a,ᵫপ-POBs4CEP,36—t—2a:._=-----ta6t-t2•a=-----BC=AB-AC=3>/5->/5-3+2t2t+3¢=ᓃ2t+3-2k,t+(9-3k)=0,vZJ>0,(2fc)2-4(9-3/c)>0,ᓽH+3^—9no,k>I´ᡈk<¶·?2-2VDP=-BC,2.•.k=a¹BCᡈºஹ=»¼x¾=¿ÀCPᨬÂ,CACÃ/3>/5-315-3\/5.•AAPN=OA-OP=6-----=-----221i,.SMBP=2AB-hAB=-AP-OB,3V5-h3.AB22⚓ᐳ23⚓

22■1•2•h=3V5—3AB•••PP'=3V5-3.ூ᪆௃(1)XI4BAÄᙶ᪗᪷5ÆÇÈᳮX48(2)CEJ.04,᪷5ÉACEs/kABOXCE=1,AE=2,ÊËÉPOB-ZkCEP,Iᘤ=ÍÎ?ÏXPÐOPCE(3)জPCP'DF"IÉPCDF_¶ÑÎ?ÏXPÐঝCEJ.04KE,CE=a,AE=2a,᪷5APOBsACEP,⊤ÓIAC,ÎÔ⊤ÓIBC=V5•—,ÕÖ=k,I×?2kt+(9-3k)=0,ᵫ420IkḄᨬÂbÎ?ÏXPÐ.m⚪ὃopᵫ?LØᦪḄ⊤Ù`XÄḄᙶ᪗ÚѶÑឋÜᑨÈÞឋÜßà¶ÑḄᑨÈÞឋÜ?ᐗL&M᪷Ḅᑨh`_áâã⚪ḄᐵxFᑭᵨ᪷Ḅᑨh`Xᨬb.