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首页 SAT考试数学练习题第九套_SAT_problem_solving_practice_test_…

SAT考试数学练习题第九套_SAT_problem_solving_practice_test_9.doc

SAT考试数学练习题第九套_SAT_problem_solvi…

辛夷kitty
2013-12-28 0人阅读 0 0 0 暂无简介 举报

简介:本文档为《SAT考试数学练习题第九套_SAT_problem_solving_practice_test_9doc》,可适用于高等教育领域

SAT考试数学练习题第九套SATproblemsolvingpracticetestSAT考试数学练习题第九套SATproblemsolvingpracticetest (x)(x²)(x)= ABCDE AndysolvesproblemstoinclusiveinaMathexerciseHowmanyproblemsdoeshesolve ABCDE Ifxandyareintegers,andxy=,whichofthefollowingcouldbethevalueofy ABCDE  IntriangleABC,AD=DB,DEisparalleltoBC,andtheareaoftriangleABCisWhatistheareaoftriangleADE ABCDEitcannotbedeterminedfromtheinformationgiven Ifn>,whichofthefollowingmustbetrue  In²>IInn²<IIIn>AIonlyBIIonlyCIIIonlyDIandIIonlyEnone Iftheslopeofalineis½andtheyinterceptis,whatisthexinterceptofthesameline ABCDE peoplemeetforabusinesslunchEachpersonshakeshandsoncewitheachotherpersonpresentHowmanyhandshakestakeplace ABCDE Ifx²y²=,andxy=,theny= ABCDE Inasportsclubwithmembers,playbadmintonandplaytennisanddonotplayeitherHowmanymembersplaybothbadmintonandtennis ABCDE  RectangleABCDhasaperimeterofThehalfcirclewithdiameterADhasanareaofπWhatistheperimeterofthepartofthefigurethatisnotshaded AπBπCπDπEπSAT数学练习题第套参考答案 CorrectAnswer:C Explanation: x=,x=x=Thetotalis, CorrectAnswer:B Explanation: Tofindhowmanyproblemsintheseriesweneedtotakethedifferenceandaddone== CorrectAnswer:C Explanation: SubstitutethegivenvaluesforyandcheckwhetheryougetanintegervalueforxForexample,usingwegetx=x=whichisnotawholenumberTherightansweris,sincex()=x==x== CorrectAnswer:A Explanation: ThebigtriangleABCissimilartothesmalltriangleADEbecausetheirbasesareparallelIfcorrespondingsideoftwosimilartrianglesareknowntheratiooftheareasisalsoknownInthiscase,letADbeoneunit,thenABisunits(giventhatAB=ADDB)Theratiosofthesidesis:Theratiooftheareaswillbe():():Sincethebigtrianglehasarea,usingtheratio,thesmallhasarea CorrectAnswer:E Explanation: Giventhatnispositive,itcouldbeapositivefraction,,orafractionofwholenumbergreaterthanIfn=,thencaseIisnottruesincen=LikewiseinIIifn=,nn=,andthestatementisnottrueInIII,ifn=½,thenn=,andagainthestatementisincorrect CorrectAnswer:E Explanation: Theequationforastraightlineisy=mxc,wherem=slopeandc=yinterceptPuttingthegivenvaluesinthisequationwehavey=xThexinterceptoccurswherey=Thus,=x=x=x CorrectAnswer:D Explanation: ImaginethefirstpersonofthesixHeorshewillhavetoshakehandswitheachoftheotherNowturntothesecondpersonHeorshewillhavetoshakewiththeotherfive,butheshehasalreadyshakenwiththefirstpersonThismeansnewhandshakesThethirdpersonwillhavetoshakewith=people,andsoonTotalhandshakes== CorrectAnswer:E Explanation: xycanbeexpressedas(xy)(xy)sincexy=wecanwrite(xy)=thereforexy=Addingthetwoequationsxy=andxy=wegetx=x=Thereforey=y= CorrectAnswer:B Explanation: Sincedonotplayeither,therearememberswhoplayonesportortheotherLetthenumberwhoplaybothbenTotal()willbemadeupofonlybadmintonplayers(n),plusonlytennis(n)andthosewhoplayboth(n)=(n)(n)n=nn= CorrectAnswer:C Explanation: ThetotalperimeteroftheunshadedpartismadeupofthreesidesoftherectangleandtheperimeterofthehalfcircleTheareaofahalfcircle=½πrπ=½πrthereforer=Theperimeterofthehalfcircleis½π=πThediameterofthecircle()=thelengthoftherectangleTotalperimeteroftherectangle=Threesidesmeasure=  Ansπ

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