2022-2023学年河北省沧州市任丘市七年级（下）期末数学试卷（含答案）

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3.ÿnæ,saCl'bcab

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A.Al=A3

B.Al=A4

C.A2+A3=180°

D.Al+A3=180°

4.M.AABC?&SaB£>fàSTO4OJAEC0,£BD=6cm,

A.6cmB.3cmC.2cmD.'bn'ttiftizë

5.^m2xm0=m9,)

A.5B.6C.7D.8

6.)

A.(|)2B.2°C.2-1D.(-2)2

7.M'JAIW«>3()

A.70°B.75°C.80°D.85°

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A.y—2>0B.y—2<0C.y—2>0D.y—2<0

9.^m>n,)

A.m—2<n—2B.—|m>—|n

C.n—m>0D.1—2m<1—2n

10.SïÇW:x3—4x=()

A.x(x2—4x)B.x(x+4)(x—4)C.x(x+2)(x—2)D.x(x2—4)

H.ÎE^^Æ(m+l)(m-l)+(m-l)W^H^(m-l)Js,)

A.m+1B.2mC.2D.m+2

12.BÆO/1.^P4=4,p

PB=7,_________

A.3B.5C.7IAB1

13.)

A-(x+y)(x+y)B.(x+y)(y-x)C.(x+y)(-x-y)D.(-x+y)(y-x)

14.2022^6^5610^44^07^,»,MMWH

+xio3m/$,WJ+ffl

x102sÆiï)

A.15.4x10sB.1.54x106C.15.4x106D.1.54x107

»,M:W-«5^,<^-»4n35>,

iÈ&1£W^60#.Wfàl^gmx»,WjMWJW()

A.x—y=10B.5x—3y=60C.3x—y=40D.x+y=20

16.^fx&!lW3x+a<2R^2tjEOM,WJaW)

A.-7<a<-4B.-7<a<—4C.—7<a<—4D.—7<a<—4

17.M,?±AAPC4X$Æ,E^WJÆPCMC±,ZP=40%

ZC=6O°,%DE//AB,ÜliJ^AED=°.

18.r±*^jtuw^ïw±,MJ^.

(l)£x=5,îfeKŸlt;

(2)iëfi£fêlF?HisfrT21BT>MX.

19.

WZW«9,SP^WiâMfcn^"ÂASfc”-W-

4-“AAST,Æ^F(n)=^.Wll:n=1584,[ÏIM+8=5+4=9,ftrU1584^->b

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2x+y=

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23.Bfrl,MÆAÂBC+,AD,AE^lJ^AÂBCMitî^¥5m,

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(2)^zB=a,zC=jS,Ha</?,^tHzDAF-^a,(WiO)

BEDC

24.IOO7C,ffiWtfr

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î'iï^A,

(2)TM1i££i41ilJcÜ&^A,B180#,#O4'JïlWÈ443007Ü,M

25.X'f'T£E.g,'^FI'fÈïEIlrSfc,-RflJPI^l&faabcd’^abcd-1000a+100b+10c+d.-Ér

_4321

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l4+O3+42+91=26.

(l)itW:F(2023);

(2)^c=e+4fft,ÜEBJ1:F(abcd)—F(abed)ll‘J'n4<'ZEZE8lYjfn^ÿ.

26.iÊE»^,iWiÂMXJU^g^,fW^T?iJlpW:

(2)MlfKa,bï^Æa+b=9,ab=15,%a2+b2

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1.A

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3.[^]D

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a

B'T'î^'ê’Æ^.®;---------F-TÏ---------

C.|t!Z2+A3=180%A2=A5,WSU3+Z5=180°,-------^y--------------b

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D.Z1+Z3=18O°,fHzl>T<-Æ^Tz3,SlfMWJÆMa^/>TO,ÜtD^t.

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irr.

4.[*mB

[Wtjf]W:É-WW:BC=CD,AE=BC,

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•••BC=AE=3cm.

B.

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frmmawMw,

5.(^aic

[WiM-.

•••m2xm°=m9,

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fâiâ:c.

fêlTOn,

6.D

[JWIJT]W:(|)2=p2°=1,2-1=|,(—2)2=4,

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7.[^]B

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.-.Z.3=180°-45°-60°=75°,

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8.[^]D

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12.A

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13.[^]B

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14.B

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W:7.7x103x2x102

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B.

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15.[^]A

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16.rrr^jD

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17.[^M]100

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vDE//AB,

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18.[^M]413>x>8

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âx=19HJ-,19x2-3=35>23,

4

4;

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13>x>8.

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19.228910

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x<9,0<y<9,Kx,yx*y,

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M+l<x<9,0<y<9,Kx,xy,nJWF(m)=lOx+y+1,

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21.[^]JW:(l)^Ann^âÙÆ.^â<JW^X7C/^,Bp^WWÆ^âùW^yx/^,

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tosfu(x=40

(y=100’

a

AHPmÆWJW2a407ü/^,s&mÆWJW^1OOÆH\

(2)20x40+2x100=1000(ÿc).

20tAnBMÆM2tB1000TL.

[JWtJr](WA&^IWWJW^XTC/^,«R^^KÆbRfiWKr^yTL/^.W“W1%2^A

W34-B380JC;5®^4^4pnnlï$Ô<]ÆM2B&ÉÛÆWtg360

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JWœ^M:yfô-7L-

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22.[»](1)JW:"AD//BC,

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V/B=80°,

•••/.BAD=100°;

(2)iO;AE^ftS-BAD,

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AD//BC,

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v/.BCD=50°,

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AEUBC.

[Wrl(l)WMaW,l^rtAlOMttHzBAD;

J

(2)WÆ¥WW^X^H4zDAB,të^TO^WttMtHzAFB,fê&UAEB=/.BCD,«¥

^^Û^ÜÆÆSiiEBJUS^.

23.[^MlW:(1)•••zB=30°,zC=50°,

•••/.BAC=180’-/B-/.C=100°,

XvAB<AABCfà%¥W&,

i

.-./.BAE=^-BAC=50°,

vAD^AABCWW,

.-./.BAD=90’-/.B=90°-30°=60’,

JÜlJzZME=/.BAD-/.BAE=10°;

(2)È(1)W:z£M£=|(/?-a).

[W^](1)Æ=ÆJ^ABC^,LljzB'jzCIÏJ/S^^liUBAClïjS^,+OAE^ÆY^^fBzBAB

WM,ÈzBAD-zBBPnJ^HlzDABWM;

(2)flS(1)WftJ/-DAE±ja,/?WBPnj.

24.W-:œiSÉfe^A^x#,Bj^fny#.

w+Eari-*-ZEJIOOX+75y-8250,

fkWî/tA.E,,14(^20_1OO)X+(100_75)y=2350

(r=30

w[y=7o,

Assoit,Bj^&voft.

(2)i£Bm#,MAP^rÆ/^ClSO-m)#,

^ÎOTB,W(100-75)m+(120-100)(180-m)>4300,

fêm>140.

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