MATH9Word格式文档下载.docx

MATH9Word格式文档下载.docx

《MATH9Word格式文档下载.docx》由会员分享，可在线阅读，更多相关《MATH9Word格式文档下载.docx（18页珍藏版）》请在冰豆网上搜索。

（1）Guy’sgrossincomeincreasedby4percentonJanuary1,1989.

（2）Guy’sdeductionsincreasedby15percentonJanuary1,1989.

A.Statement

（1）ALONEissufficient,butstatement

（2）aloneisnotsufficient.

B.Statement

（2）ALONEissufficient,butstatement

（1）aloneisnotsufficient.

C.BOTHstatementsTOGETHERaresufficient,butNEITHERstatementALONEissufficient.

D.EACHstatementALONEissufficient.

E.Statements

（1）and

（2）TOGETHERareNOTsufficient.

Q3:

Ifwz<

2,isz<

1?

（1）w>

2

（2）z<

Q4:

Whichofthefollowingisequalto517

49?

A.2

1013

B.2

1017

C.2

1020

D.2

1026

E.2

1036

Q5:

Ifxandyarepositiveintegersandy=

whatisthevalueofy?

（1）x<

8

（2）y>

1

Q6:

Sue’smonthlyearningsconsistofamonthlysalaryanda4percentcommissionontheportionofhermonthlysalesthatisinexcessof$2,000.IfSue’smonthlysalarywasthesameinJulyasinAugust,howmuchgreaterwerehersalesinJulythaninAugust?

（1）Sue’smonthlyearningswere$3,620inJulyand$3,580inAugust.

（2）Sue’smonthlysalarywas$3,500inJulyandinAugust.

Q7:

Acompanyhasassignedadistinct3-digitcodenumbertoeachofits330employees.Eachcodenumberwasformedfromthedigits

2,3,4,5,6,7,8,9

andnodigitappearsmorethanonceinanyonecodenumber.Howmanyunassignedcodenumbersarethere?

A.6

B.58

C.174

D.182

E.399

Q8:

ThepointsR,T,andUlieonacirclethathasradius4.IfthelengthofarcRTUis

whatisthelengthoflinesegmentRU?

A.

B.

C.3

D.4

E.6

Q9:

Inanartgallery,25percentoftheartpiecesondisplaywerephotographs.If12percentofthephotographswereblack-and-whitephotographs,whatpercentoftheartpiecesondisplaywereblack-and-whitephotographs?

A.3%

B.7%

C.13%

D.30%

E.37%

Q10:

Whatisthevalueof（x-y）4?

（1）Theproductofxandyis7.

（2）xandyareintegers.

Q11:

Thetotalcostofanofficedinnerwassharedequallybykofthenemployeeswhoattendedthedinner.Whatwasthetotalcostofthedinner?

（1）Eachofthekemployeeswhosharedthecostofthedinnerpaid$19.

（2）Ifthetotalcostofthedinnerhadbeensharedequallybyk+1ofthenemployeeswhoattendedthedinner,eachofthek+1employeeswouldhavepaid$18.

Q12:

FromLeland’sgrosspayofpdollarslastweek,tpercentwasdeductedfortaxesandthensdollarswasdeductedforsavings.WhatamountofLeland’sgrosspaylastweekremainedafterthesetwodeductions?

（1）p-s=244

（2）pt=7,552

Q13:

Ifthesequencex1,x2,x3,…,xn,…issuchthatx1=3andxn+1=2xn–1forn≥1,thenx20–x19=

A.219

B.220

C.221

D.220-1

E.221-1

Q14:

Yesterdayeachofthe35membersofacertaintaskforcespentsometimeworkingonprojectP.ThegraphshowsthenumberofhoursandthenumberofmemberswhospentthatnumberofhoursworkingonprojectPyesterday.WhatwasthemediannumberofhoursthatthemembersofthetaskforcespentworkingonprojectPyesterday?

A.2

B.3

C.4

D.5

Q15:

Theaverage（arithmeticmean）ofthe5positiveintegersk,m,r,s,andtis16,andk<

m<

r<

s<

t.Iftis40,whatisthegreatestpossiblevalueofthemedianofthe5integers?

A.16

B.18

C.19

D.20

E.22

Q16:

Ifs4v3x7<

0,issvx<

0?

（1）v<

0

（2）x>

Q17:

Acertainlistconsistsof21differentnumbers.Ifnisinthelistandnis4timestheaverage（arithmeticmean）oftheother20numbersinthelist,thenniswhatfractionofthesumofthe21numbersinthelist?

C.

D.

E.

Q18:

InisoscelestrianglePQR,ifthemeasureofanglePis80º

whichofthefollowingcouldbethemeasureofangleR?

I.20º

II.50º

III.80º

A.Ionly

B.IIIonly

C.IandIIonly

D.IIandIIIonly

E.I,II,andIII

Answer:

Q19:

Threeprintingpresses,R,S,andT,workingtogetherattheirrespectiveconstantrates,candoacertainprintingjobin4hours.SandT,workingtogetherattheirrespectiveconstantrates,candothesamejobin5hours.HowmanyhourswouldittakeR,workingaloneatitsconstantrate,todothesamejob?

A.8

B.10

C.12

D.15

E.20

Q20:

Favorable

Unfavorable

NotSure

CandidateM

40

20

CandidateN

30

35

Thetableaboveshowstheresultsofasurveyof100voterseachresponded“favorable”or“unfavorable”or“notsure”whenaskedabouttheirimpressionsofcandidateMandofcandidateN.Whatwasthenumberofvoterswhoresponded“favorable”forbothcandidates?

（1）Thenumberofvoterswhodidnotrespond“favorable”foreithercandidatewas40.

（2）Thenumberofvote