2022-2023學年河北省滄州市任丘市七年級（下）期末數(shù)學試卷（含答案）

2022-2023Wêrtf-b^(T)

i.ST?iJ*g+.7C—?;v/fMm7a<)

A.2x—6=yB.y—1~5C.yz=8D.x+-=1

y

2.?U|?],CDlABT^D,?^AABC^?,WJ()

A.^mAD^AABC6üBCü±a<Ji<^

B.a^?D^AABC?<JACü±éI<Jitta

C.aaCD>A4BC?<jACià±Waa

D.a?CD>AABCtf]ABià±Wi^a

3.?n?,saCl'bcab

￥t?a<j^()

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'ttiftiz?

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°

8.y^2?<J^^T0,)

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.S??W:x3—4x=()

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

H.?E^^?(m+l)(m-l)+(m-l)W^H^(m-l)Js,)

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

12.B?O/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

x102s?i?)

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$?,E^WJ?PCMC±,ZP=40%

ZC=6O°,%DE//AB,üliJ^AED=°.

18.r±*^jtuw^?w±,MJ^.

(l)￡x=5,?feK?lt;

(2)i?fi￡fêlF?HisfrT21BT>MX.

19.

WZW?9,SP^WiaMfcn^"?ASfc”-W-

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

“MW,F(1584)=^=16.WJF(2178)=;￡-^PWélMm￡“'MMW’,

WJW?&H?Mmiw?.

2x+y=

20.(i)W“7ü-^m:{J§.

4x—y—5(2)

f2(x—1)>—4

(2)W^?^fl:3x-6^,

(—<x-i

21.èüSS,BW3J?24-

n

AiPnlJW?W3-t-B380?;PW4A2BnnlWjW

?W360?.

(1)^A,BWftSW.(|t|O?.

aa

(2)^^?^204-Annfi$èù??24“BnnO<j?WL&^ffl?

Ancü#BPc?

22.￡ll?,^m^ABCD^,ADUBC,zf?=80°.

(l)>RzB4DaW^;

^?BWzB?D?tBC^.ft￡,ABCD=50°J&iiE:AE//DC.

23.Bfrl,M?A?BC+,AD,AE^lJ^A?BCMit?^￥5m,

(l)^ZB=30°,ZC=50°,^zDAB?d?^;

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

BEDC

24.IOO7C,ffiWtfr

f?^l207ü,B/%nnWW57é,1007C,A,￡±

(l)^-^5A,B8250TC,0?W&Wl?32350JC,M

?'i?^A,

(2)TM1i￡￡i41ilJcü&^A,B180#,#O4'J?lWè443007ü,M

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

_4321

^?:^ra<iiE^a/)cdWFiE^,^!|^/7(a/,cd)=a+b+c+d.^^,F(1049)=

l4+O3+42+91=26.

(l)itW:F(2023);

(2)^c=e+4fft,üEBJ1:F(abcd)—F(abed)ll‘J'n4<'ZEZE8lYjfn^?.

26.iêE?^,iWi?MXJU^g^,fW^T?iJlpW:

(2)MlfKa,b?^?a+b=9,ab=15,%a2+b2

(3)M2,^C^^ABh,V^AC,AC+BC=14,iWjE^^

s2,aSi+5^40,^S4>TOW?^.

1.A

[O?lOaSt?

Cl^W^-TC—

i&f?:A.

ff?t￥?<J^^^enL|f?-7C-?^M.

2.[^]D

[W]w-:?D^AABcfim.fimtt?A>BW^,

^CD^ABC^ABül^^,teiM?CW^TOlê?JO;,WiWi,W￡

D.

MH:OittWM^WBPnr.

l?WtliWW

ffe=?Wja.

3.[^]D

[Wtf?-lW:A.Z1=Z3,OlJ?S^a^è-W-,?&AWê-?Si;c

B.ézl=z4,z3=z4,mijAl=z3,?lx

a

B'T'?^'ê’?^.?;---------F-T?---------

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

a-^b^^f,SkC/F?^w’Bli:;

D.Z1+Z3=18O°,fHzl>T<-?^Tz3,SlfMWJ?Ma^/>TO,ütD^t.

W￡:D.

WMT-IT,èlttBPWü

irr.

4.[*mB

[Wtjf]W:é-WW:BC=CD,AE=BC,

?■?BD=6cm,

???BC=AE=3cm.

B.

=CD,

frmmawMw,

5.(^aic

[WiM-.

???m2xm°=m9,

A2+=9,()

■?■=7,()

AAMW,()

faia:c.

fêlTOn,

6.D

[JWIJT]W:(|)2=p2°=1,2-1=|,(—2)2=4,

A^àa:D.

7.[^]B

(W1?■.M,

Vz2=90°-30°=60°,

.-.Z.3=180°-45°-60°=75°,

va//b,

???Z1=Z3=75°,

M:B.

HWIftW4M^BPBT.

^Kè^+SW^.

8.[^]D

[M^f]M;y-2<o.

D.

Ky^f?iWO,WJtBW?t

M?WT-?-WW:,‘W’MB?,^JlH^^.

9.[g￡]D

[ft?tJr]W;A>m-2>n-2,

B.-±m(xù)<-ln,?■?^^o’ISBi

C\m—n>0,??.^F'?^'ê’zS?;

I).?■?m>n,

■■-2m<—2n,

■'■1—2m<1—2n,???^'H’JSSB;

feja;D.

A.2,

B.W￡MMIWmU-|,

C.W^MMPWMim,

D.^??MMiàlWW-2,

3wos^.

io.[g^lc

[m/r][W?-1

?2è?STW^[S^W2it?^4WS^,

W:X3-4X

=x(x2—4)

=x(x+2)(x—2).

C.

H.[^1D

(MtJrl[WT]

^m^SS(m-i)^,

S??JsjOJi.

[?^1

W:(m+l)(m-1)+(m-1),

=(zn—l)(m+1+1),

—(m—l)(m+2).

W&D.

12.A

[Or]M:aPAi/itf,=

^paM^/?tjgêM^TPA,

A.

mw?w??JnT.

*SW?IJOmMTa^WIOt

13.[^]B

[O?lW:A.(x+y)?x+y^M^m^,

A'?^'a;

(x+y)(y-x)4’M^WffiM,#>fêlW,

C.(x+y)(-x-y)4>W?MS^,MffilW,

'Ff?'ê'?ji:;

D>(-x+y)(y-x)HW+0l?Jfi<JJj5,

M:B.

+bxa-b)=a2-

14.B

[WWl[^t/tl

WJf^BPnJ.

[^1

W:7.7x103x2x102

=(7.7x2)x(103x102)

=15.4x105

=1.54x106(X).

B.

[^^1

Wam?an=am+n^?m%fa.

15.[^]A

[Wt/rlW:'KIü??#:Sx-3y+(20-x-y)=60,BPx-y=10.

üi?:A.

M“W$j—it^W+5^,BWiWIslW^Wr?

^60#”mTjfê.

fê,ai:

ig?M

16.rrr^jD

[WWJW:???3x+a<2,

■?■3x<2—a,

JHüx<

V^^?CHW2ME?&W,

AW?^JWMW;*J1>2,

P1ü2<^<3,

WW:-7<a<-4,

f?ja:D.

OPF^sWtHx<W212,WtWtH2<^<

3,WZWW^.

WM-?-^Wl?,#

17.[^M]100

[WWW:ffiA/lBCt1,ABAC+AB+AC=180°,

vZ.B=40°,ZC=60°,

??■^BAC=180’-ZB-Z.C=180°-40’-60°=80°,

vDE//AB,

:./.A+/.AED=180°,

.-.^AED=180’-80°=100’.

i?L&^h100.

füffl￥Ma^ttMiU^=?^aùrtft^?3.W^i’n]I§Bpnj.

=?l*l??S.W1*1W^jl80’ff

M￡Wnfs)^l*lft5#.

18.[^M]413>x>8

[WWlW:(l)^x=50t,5x2-3=7<23,

^x=7H>L7x2-3=11<23,

^x=HHt,11x2-3=19<23,

ax=19HJ-,19x2-3=35>23,

4

4;

(2)2,

.-.2(2x-3)-3>23,2x—3<23

>x>8,

13>x>8.

(l)?^W/TisW??WJ^^HPnr;

(2)?WrW/T?OOJnj.

mwi?woij,

19.228910

[Wf]IW:F(2178)=^y=22,

“AAlfc“f?X,i$m=lOOOx+lOOy+10(9—x)+9—y=990x+99y+99,^4*1<

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

,.990x+99y+99,,.

■c?■F(m)----------------=lO1Ax+y+1,

?■?0<y<9,KyjêM,

.?■y=9,

???l<x<9,x#=y,XZES?^[,

?■?xS^z^g8,

m8910,

^^>g:22,8910.

èBOTfêF(2178)=^=22,=lOOOx+lOOy+10(9-x)+9-y=990x+99y+99,

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

W^tHy=9,Xx^y,fex?^?g8,Mm?<J>

^<>g89io.

20.(i)dx+yJ?

4x-y=5@

?+@,W:6x—6,BPx=l,

^x=lftà?,W:2+y=l,

m-.y=-l,

2(x-1)>-4?

(2){3x—6.zrx’

—<x-l@

JW^?KDW:X>-1,

W?X<4,

<X<4,

1,2,3.

?ai￡:R'W'K**/h'h

“PWBc￡;IsJW'b;iVh'h^+lW;WWW

B

21.[^]JW:(l)^Ann^aù?.^a<JW^X7C/^,Bp^WW?^aùW^yx/^,

KHHHH^^B(2x+3y=380

|4x+2;=360.

tosfu(x=40

(y=100’

a

AHPm?WJW2a407ü/^,s&m?WJW^1OO?H\

(2)20x40+2x100=1000(?c).

20tAnBM?M2tB1000TL.

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

W34-B380JC;5?^4^4pnnl?$?<]?M2B&é??Wtg360

TC”,x>y^-TL-^Mil,JW￡aPnmtB*èfè;

(2)|gffi^^=Wx^a,appr^tHè?it.

JW?^M:yf?-7L-

'^7JW;(2)^?gW=^^X^*,

22.[?](1)JW:"AD//BC,

:.Z.B+/.BAD=180°,

V/B=80°,

???/.BAD=100°;

(2)iO;AE^ftS-BAD,

/.DAE=^/.BAD=50°,

AD//BC,

/.AEB=/.DAE=50°,

v/.BCD=50°,

???/.AEB=/.BCD,

AEUBC.

[Wrl(l)WMaW,l^rtAlOMttHzBAD;

J

(2)W?￥WW^X^H4zDAB,t?^TO^WttMtHzAFB,fê&UAEB=/.BCD,?￥

^^?^ü??SiiEBJUS^.

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)?=?J^ABC^,LljzB'jzCI?J/S^^liUBACl?jS^,+OAE^?Y^^fBzBAB

WM,èzBAD-zBBPnJ^HlzDABWM;

(2)flS(1)WftJ/-DAE±ja,/?WBPnj.

24.W-:?iSéfe^A^x#,Bj^fny#.

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

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

(r=30

w[y=7o,

Assoit,Bj^&voft.

(2)i￡Bm#,MAP^r?/^ClSO-m)#,

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

fêm>140.

JW,

(