湖南省郴州市臨武縣2023-2024學(xué)年七年級數(shù)學(xué)第一學(xué)期期末質(zhì)量跟蹤監(jiān)視試題含解析

2023-2024

'?W:

i.^±^-?êawn^,mm?CB>

mmillMi.?

2.?tw<h?^iuH,ffl2Bf?aüe^w-^±^?a^w^fêMa^;m&?

T&Js,SSWWU

3.^M^^?^?^?Sfê?E^rtMf?fi±;?iM^,?

Mjsww±r^M;w-twra.

4.iW&*T^^?^-#$0o

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1.T?ffi:?-?&*?;WtftbKlSiO;?

?tt±,?iàW^bt^ü?ùaW?^è?J?,()

A.0^B.l>bC.2^D.3^b

28^111417

2.—,—...MW,^>4>^100>b^?()

7'9'111O

299299301303

A.B.-----C.D.-----

199201201203

3.()

B.

B&:M,C^gABlft+A,P^^BC?ù+A,AB=20cm,

A.15cmB.16cmC.10cmD.5cm

5.jtA?^W^^,?MSTü,￡!W?W:“M^^-^-^^?Tk?x,

W?M36jü”,/bW:WW”,lOMAmi§nr&,/b^￡W￡^btT()

A.5407GB.522TEC.486?êD.469TC

6.W-iüH?^Z2=30°15z,UliftO^TC)

w

A.59.45°B.60°15'C.59°45'D.59.75°

7.%x+y=3,xy=2,M(5x+2)-(3xy-5y)?üfê^J()

A.12B.HC.10D.9

8.

^TO?A1?,70AMM?S.70AùM?$,70^,

^n^WWf?A&A?soo,W20i3^,

WXMB^M3507J,W2018A?JéW^?4207?)!ülj4207jffl^?^^A()

A.420X104B.0.42X107C.4.2xl06D.4.2xl02

9.￡|a|=3,\b\=2S.a<h,RiJa+èiW^T()

A.IngsB.-l°￡-5C.1^-5D.-1^5

10.^^axy2--x^bxy2+-x^^-^^,JülJWmab()

34

A.a=-bB.a=b=0C.a=bD.

H.)

A.1B.-laK5C.-5D.-5^1

12.BfcK?x-2yW?-5,üHJW^3x-6y+8éKHè>

A.18B.7C.-7D.-15

->?S?(??4#,W#20#,

13.a$n|x|=3,|y|=7,K-v+y>0,J^x-y.

14.1+M7a2b-5ba2=.

15.MSf2(x+l)^3(2-x)

16./hB^^i+TW^5^W^TSK^?Wl’Bl,15min

WMA.

?iSWI'B]xhnin0<x<55<x<1010<x<1515<x<20

201695

17.^2a3v+,^-|a2t+4l^>W?￡,.

H,iwg?(AA?7/h?,üE^?OM)

18.(5^)AT^ME307aTOJilAWH>^AA>

Wa^AnW^j3:5:2,OJinT^ti+S.

(2)WB?r^Tf-S+A,A:;B:;

(3)^±fe|x<g^^@a<J^AMA^.

19.(55?M,M-4/^CDffiST?O,OEêZAODWY^?^ZAOC=6()°,OF±OE.

(1)5W

(2);￡ZB0Ef?O(.

21.(105?M,OMB>CD>fê￡T?O,XL^O^^^OM.ON,S.ZAOM=ZCON=90°

(VfêOC￥ftZAOM,^ZA0Z9aùM^-

(2)^Z1=-ZBOC,$<.AAOCff?Z.MOD.

4

22.(105?

(1)-2èùfll;

(2)

3

23.(125?

(l)2(x-3)=2-3(x+l)

5x-73A-1

(2)1—

62

$<hS3tf,

1>B

[W1OTlfê?O<m;???±,

iwêTOO?

^t?'b&WAO,ft(g)jEfà;

??±,a(WiM;

ffiftttl,?iiWatE^iiW^W^W^b,

^Lhtffiè,RW-MEtà,

B.

r^m

2,B

r^tff]<?èù,KAA^6ù?nj^.

.281114173n~1

r[lw?Wi]M:ffl-sK-x—>——>—.......PTIOn4-o--------?

37911132/?+l

Vn=100,

299

.‘.￡1004^?:

201

?:B.

r^g#]

3'B

[5X1

e^w.

[WM]A.B-ê-iliif?W,*?*$&

B>ig^±ffiiO,??

c>ig^-tt^s,as??

D.ü-ê-aw^g,

a&:B.

m

M?MWW>jsiasiùw^ê,wms^RiSimEê,>

AMAw?mè&ffl?.

4,A

[#tfrJMMCABDBCf?+a,W&AC=CB=^-AB,CD=^CB,AD=AC+CD,XAB=4cm,

22

MBPPT^?ü^.

[WMlv^CêagABfi^,AB=20cm,

11

..BC=—AB=—x20cm=10cm,

22

VaDMBCf?+a,

.'.BD=—BC=—xl0cm=5cm,

22

.*.AD=AB-BD=20cm-5cm=15cm.

A.

[?)

5>C

[^Wl^<I^üKBf?STx>b^,m&^=Wx?^'ê-^^-W??f^tt^Mi^Ma367ü,HPRT

Xf?-jü-tfcmMZBPRT^HI^.

[WMlM:

W:18(x-l)-18x0.9x=36,

M^:X=l.

18x0.9X1=4867ü,

?C.

IMI

6,C

[#ffi]??=^fe??Wzi+z2=90°,Wt?fê??iêMOJBPW.

[WM1Zl+Z2=90°

Z2=30°15'

.-.ZI=90°-Z2=90°-30°15'=59°45'

C.

?i7EM‘Wm+M,

7,B

CW1S&x+y=3,xy=2ftAi+?.

[WM1(5x+2)-(3xy-5y)=2-3xy+5(x+y),

Vx+y-3,xy-2,

.'.^^=2-6+15=11,

tfo&:B.

8>C

[^Wl(^fl<?<10,n^liEW),RMiOJa,nBPPT.

[WM14207?=4200000=4.2x106

C.

[?]

9,B

è|a|=3,\b\=2wa=±3,b=±2,#èa<bWaWbaW?nf.

[WMlM:è?BWa=±3,b=±2,

^b=2Bt,a=-3,Ma+b=-3+2=-l,

Sb=-2Bt,a=-3,Ma+b=-2-3=-5,

B.

[?]

aflb

10.A

W?fê?fta-èjbaWiL

[WJ??;V^?axy2--x^èx/+-xWflJt-^M?,

34

.’.(a+b)xy2+—xê—BPa+b=O,

WJa=-b,

A.

[?1

11.D

[M1OSiftW-2ttW^a-^IPPRT.

[#??]-2-3=-5;

-2+3=1;

ifeia:D.

[Ml

?èMwrmib

12.C

[^?tfrl^W^3x-6j+84t^j3(x-2y)+8j5,fcx-2>’aùJa^àl+MBPbl.

[WJM;':x-2y=-5,

:.3x-6y+S

=3(x-2y)+8

=3X(-5)+8

=-7

tk&c

(?m

dlW(1+9I+0Z)YWW"""siWYLBJ^?(S+T+91+OZ)ttfWO‘mmM

roK9i

[Ml

?8

‘8=x’êHé-SW

0=^￡~9+Z+^Z:i^4Sf￥

‘0=(*-3)￡+(l+*)z:O?[O]

IWJ

8'SI

?êg?!W±MW*W?^#^1FWWW￥￡WW

LW1

q-”z

?qB^=qB(?-/,)=nq?-q

?jada^^ro^isi^^^wréft#]

WZ'H

?^WMWrO^lFWWB^‘j^wwx^w*

9l~=L-￡-=‘<-^^V-=L-￡=^-^^

0<X+xX

￡+=^<‘￡+=^V

Z,=Kl‘￡=|r|

?^Mdax-rY^M‘Wxtèx?B?[êrn

oi-^fr-'￡1

<4M^.

-r-+?H-H>1.20+16+945_

15minéKh^WA:————-—--—--0.9,

20+16+9+550

0.1.

[?]

.ésfc

17,1

[WJ?HW?WWJU

[WMJM:HOlx+l=2x+4,&x=l

iüm^:l.

ra?]

isi^éfrm

H,M￡?(*A?#7<h?,üEISWOM)

18,(1)?èWifê?;(2)20;40;(3)4.575A

[##fl(1)

(2)^?r^i+MHlA,BM;OmAtW?flWTO.

(3)migWAW^W.<?^tBW^^@W^Aa<J^J,^mW^A^BpnT^.

[WM1M:(1)nT^^AW?;

W?;

(2)W^?f^gti+SWA;20B:40

20;40;

BP?|X@aù^AWX^A4.5^A.

[am

?r^ai+S^^Wi+S.

19,(1)AAOF=Z.COF,SèWMWr;(2)^BOE=12()°.

[M?r1(1)^tHZAODg^,^tHZAOE,^tHZAOF,BPPTWHI^;

(2)^tHZBOD?^,jfcHlZDOEOb?BP

(WM](1)ZAOF=ZCOF,

ZAOC+ZAOD=180°,

VZAOC=60°,

ZAOD=180°-60°=120°,

‘.'OE^ftZAOD,

?‘?ZAOE=yZAOD=yX120°=60°?

’:OF±OE,

.\ZFOE=90°

ZAOF—ZFOE-ZAOE=90°-60°=30°,

ZCOF=ZAOC-ZAOF=60°-30°=30°,

.\ZAOF=ZCOF.

(2)W:VZAOC=60°,

ZBOD=ZAOC=60°,ZAOD=180°-60°=120°,

?;OE&ZAODWW&,

ZDOE=—ZAOD=M)°,

2

ZBOE=ZBOD+ZDOE=60°+60°=120°.

(affltl

20,(1)x=3;(2)x=-l

[##T1(1)m,M^IBPPT;

(2)M,MM1BPnr.

[WJ??:(!)4x-3(5-x)=6

4JC-15+3X=6

7x-15=6

7x=21

X-3;