2021-2022学年浙江省杭州市萧山区高桥初中教育集团九年级(上)开学数学试卷

学年浙省杭州市山区高桥中教育集九年级第一学期开学学试卷一选题本题10小题共30分A

B

C

DA6B2

D

7201530.39A3.039

B3.039104

C105

D30.39AabBb+1a+1bDb+130722xA2+3x30Cx+330

B3xDx+2xABCD6BECDDEA

B2C

D

x+a0A12a

B1aC

+1

Dx/

141516

xAC

BDaa0P1A

BC

D10ECDACEC1ABA

B

C

D二填题本题6小题共24分11m4m12DEA3020E13x+

14

/

355

15ABCDADx2BDC16ABCABDAD1CD三解题本题7小题共66分1713x+1x33+12x318ABBAC20D

12211221191m23180020Oyx+bB1b23xyy21CBBDFEF1AEBD248EF

22xkx43x+3k31k21323ABCACDDECDDECDCEFBE1FCBCDF26

CD7AD3CDABE

参考答案一选题本题10小题共30分A

B

C

D

A

6B2

D

7ABC

62D

2

C201530.39A3.039

B3.039104

C105

D30.393.03910CAabBb+1a+1bDb+1A0.5b0.4ab1bBbabb+1aCb+1+1bab1D0.4bb+1C30722

xA2+3x30Cx+330

B3xDx+2x30xxDABCD6BECDDEA

B2C

DABCDCDCEBCBECBECEBBC4DECE2

x+a0A12a

B1

1C

+1

Dxx2x+0x

xx

x+1x1212

/

x

xAC

BD16x+10x1014xaa0P1A

BC

Dy0P122+yxy0210ECDACEC1AB

A

B

C

DACFABCDACBBAC2ABE367.5180BAC18067.545AF67.5CFECFECEFABxACeq\o\ac(△,Rt)ABC

xx

+1二填题本题6小题共24分11m4mmm3

mm

mm212DEA3020E3020CBE+2050DEE5013x+aa2214

/

355

/5324/2415ABCDADx2BDC36

ABCDDyxD0yxC363616ABCABDAD1CD1

CDABACADC60CDDABDABDABDABD

BADB120CADABDADBAD1560ABCCAB90CDDBDACCDABD1三解题本题7小题共66分1713x+1x33+12x33x+1x3+32x318ABBAC20D

BC

ABCABD+DBCADABDDADBCDCDBACABCD40191m10035231800115%15100401510035%n2

1221121211221121212318001800135020Oyx+bB1b23xyy1Ayx+b113+kb22byxB0OB2

x3x

eq\o\ac(△,A)0eq\o\ac(△,A)0B21

3331x0x321CBBDFEF1AEBD248EF1ADBCADBCADADAEBD2FBCGABCDFCFDBCDeq\o\ac(△,Rt)EFGFG622xkx2

x+3k31k

1212213kkx43xkk3

4k33kk23k3

kx3x1k21k+4k0kk32

43+330ak3ck3k3k323ABCACDDECDDECDCEFBE1FCBCDF26

CD7AD3CDABE

1CDDECD45FCB3090FCB15ACBA45A+45+152CC