遼寧省沈陽市于洪區(qū)九年級上學期期末數學試卷

學年遼省沈陽市洪區(qū)九年（上）期數學試卷一選題下各的選案，有個案正的每小分共20分A

BC

DA

B

C

DA9A1

BB

C11C

D12Dx2+mAm1Bm1Cm1Dm1100PCA1

22222222222222AC

BD100tan55ABCDEABACDEAD2DEBCA

B

C

DA2BC0yDx0DABADBDABBDA

B

CD103A2Cyx

B2Dy2x+1+3二填題每題3分，分x+mxm122

13OAAAcm14B35OABCA15ABOy+4x

16ABCDCEFGBHBCEF4CD2GH3

00三解題第17小題6，、19小題8，分17+|1

|+2sin4518123319BDP的mQ1.69.6m12AC4

四每題分，共16分）20B64cos640.441A5m

2AD20m21kxy

A1

Clx12五本分225//80.511/2905

2PCM2PCM六本分23ABCDmDA1cm/A/PQCPCQs1t2SSt3PQtS△△4t七本分2411BDE22BCaBCADNABACQMPQMN33ABCDE2818B6

2222八本12）25y+c0xB001y++2MACMM3BPC7

2018-2019學年寧沈市洪九級上期數學卷參考答案試題解析一選題下各的選案，有個案正的每小分共20分A

BC

DA

B

C

D首AEBC8

212212ABCDADAEABCD

AECD

AFABCDC本A9

B

C11

D125xxx1xx110x11x11C本

A1

B

C

D9

222222D考x2+mAm1Bm1Cm1Dm1eq\o\ac(△,)02x4mm1D100PCAAC

BD100tan55100PAPCtanPCAC10

ABCDEABACDEAD2DEBCA

B

C

D根DEADEABCA2BC0yDx01y11ABk2C0yCDx0D11

22222222222222C0kxk0yxDABADBDABBDA

B

CDADADDADBDAD21

BDAD2

1D本

103A2Cyx

B2Dy2x+1+3易03yxh+2+1D主12

2222222222二填題每題3分，分++03m5x310x9+m19100m5本12在nn100此13OAAAcm27先13

OA20ABA22本14B35OABCAyAxyAxy350CBx0+3+03x23A2AA2k6A14

2221222212y此15BOy+

y0xxOBy+4x

yx+4x+

0xxx本16ABCDCEFGBHBCEF4CD2GH15

GHPFGH2GHPGPG2

GHADABCDCGFADBC4GFADGFHAHFHFGHAPHFGHASAGF2PHHGPGPDADAPGDGC22GP

2GH＝本16

00三解題第17小題6，、19小題8，分17+|1

|+2sin45直1+

1+2

2181231313121312217

111

212223

3339333此19BDP的mQ1.69.6m12ACAPMABD

2BDEFBFCAFBQMPBDAPM18

x3x32+122m2BDCEABFBFACBFACyy3.6四每題分，共16分）20B64cos640.44AAC5m2AD20m19

2DDHHeq\o\ac(△,Rt)ABCBAC511.411.42DDHHeq\o\ac(△,Rt)ADEAD20mDAEEH1.7DEsin64ADmDHDEEH19.7mAD20m19.7m本21kxy

A1

Clx20

△△12AB2ABCA1

y

m21mny2yk2yx52y2xy5本五本10）225//80.511/21

122122290/80.5122/2x/

1+81415142x25x90xx5x1x5x255此六本10）23ABCDmDA1cm/A/PQCPCQs1t2SSt3PQtS△4t

PCM22

DPAQ2tAP4t4tAQ2tt23BDABCDADDP2t4t4tADABDADBPQBDABDADBAPQAQPAQAP2tt23

APQBCQ222PCMAMQAPMAPQBCQ222PCMAMQAPM2

正方形

eq\o\ac(△,S)eq\o\ac(△,)△

AQBQDP162t4t4t16+tt8+4tt2t+80t23CNMQCNMPCN△△5△△MABMHADHMABCDACMGAQAP△eq\o\ac(△,S)

此七本12）24

矩形PQMN22矩形PQMN222411BDE22BCaBCADNABACQMPQMN33ABCDE2818BBCAB

ABCx+

PNPQxS3PPGGPIPPHABPGxEKDxPHBGPHxEFEDABCEDEFEFEDABB90FEDB25

2PQMNPQMN22PQMNPQMN22APNABCPQPQxSPN矩形

PQS矩形3PPGBCAEIPPHAHPIPGxx28CD14BC36AEDK14EK

EI36PHAIAEEIx54Sx54xx21+567x21BGPH567本26

2222222222八本12）25y+c0xB001y++2MACMM3BPCBCxACMBMPmBCBCP90CBP9090m90mPBPCmPaxB3010A10300y+

222222222222222222222222y2+32x1M1x1AMBMCMAMCMBC