黑龙江省哈尔滨市2019-2020学年中考数学三模考试卷含解析 - 百度文库 ر

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Ax4+x4=2x8 Bx23=x5 Cxy2=x2y2 Dx3?x=x4

2ͼ?ABCAB,BC,CAijֱΪ203040O?ABCƽߵĽ㣬

S?ABO:S?BCO:S?CAOڣ

A111 B123 C234 D345

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B27.528

C2827

D26.527

4 ͼһֱdzߵֱǶֱߵһϣ150㣬2

A20 B30 C40 D50

5һɴСͬСɣ濴ļ״ͼͼʾСеֱʾλСĸ濴״ͼǣ

A B C D

6ʵaϵλͼʾ˵ȷ( )

Aa෴2 Ba෴2 C|a|2 D2a0

7ͼij԰һǣAOB=90㣬ABİ뾶OA6ףCOAе㣬DڻABϣCDOBͼӰ֣ǣ

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A210 B41 C52 D51 9ͼСΪ˲ӿABBAӳȡһDͬȡһCáCAD=60㣬BCA=30㣬AC=15 môABΪ

A15 m

B53 m C103 m D123 m

10ͼ֪y=

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Ax3 B3x0 Cx3x0 Dx0

11һκy?ax?cκy?ax2?bx?cͬһƽֱϵеͼǣ

A B C D

12֪ABCDACһ㣬߹ABȷһEʹADEסABCҪͼۼǣ

A B

C D

⣺⹲6С⣬ÿС4֣24֣

13ͼƽֱϵxOyУıOABCΣC04DOAе㣬CDOCΪתʱת90ٽõƽƣʹCOغϣдʱDĶӦ꣺_____

14ѧĿԺʿdzӹŴѧҼġӳζԽһֱƽڱߵֱߣ(ͼʾ)һۣһ۳áಹԭԭˡ㾭֤

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SEBMFSABC(____________________________)

֪SADCSABC________________________________________________________

ɵSNFGDSEBMF.

15һ͸Ĵй5С򣬷ֱΪ23dzɫȫͬСɫͬСĸΪ____. 16ֽʽx2y6xy+9y=_____

17ͼABCDEУACBEཻڵFAFEĶΪ_____

18ͼy=

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