sat数学考试试题.docx
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sat数学考试试题.docx
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sat数学考试试题
SAT数学真题精选
1. If2x+3=9,whatisthevalueof4x–3?
(A)5 (B)9 (C)15 (D)18 (E)21
2. If4(t+u)+3=19,thent+u=?
(A)3 (B)4 (C)5 (D)6 (E)7
3. Inthexy-coordinate(坐标)planeabove,thelinecontainsthepoints(0,0)and(1,2).IflineM(notshown)containsthepoint(0,0)andisperpendicular(垂直)toL,whatisanequationofM?
(A)y=-1/2x
(B)y=-1/2x+1
(C)y=-x
(D)y=-x+2
(E)y=-2x
4. IfKisdivisibleby2,3,and15,whichofthefollowingisalsodivisiblebythesenumbers?
(A)K+5 (B)K+15 (C)K+20 (D)K+30 (E)K+45
5. Thereare8sectionsofseatsinanauditorium.Eachsectioncontainsatleast150seatsbutnotmorethan200seats.Whichofthefollowingcouldbethenumberofseatsinthisauditorium?
(A)800 (B)1,000 (C)1,100 (D)1,300 (E)1,700
6. Ifrsuv=1andrsum=0,whichofthefollowingmustbetrue?
(A)r<1 (B)s<1 (C)u=2 (D)r=0 (E)m=0
7. Theleastintegerofasetofconsecutiveintegers(连续整数)is–126.ifthesumoftheseintegersis127,howmanyintegersareinthisset?
(A)126 (B)127 (C)252 (D)253 (E)254
8. Aspeciallotteryistobeheldtoselectthestudentwhowillliveintheonlydeluxeroominadormitory.Thereare200seniors,300juniors,and400sophomoreswhoapplied.Eachsenior’snameisplacedinthelottery3times;eachjunior’sname,2time;andeachsophomore’sname,1times.Ifastudent’snameischosenatrandomfromthenamesinthelottery,whatistheprobabilitythatasenior’snamewillbechosen?
(A)1/8 (B)2/9 (C)2/7 (D)3/8 (E)1/2
Question#1:
50%ofUScollegestudentsliveoncampus.Outofallstudentslivingoncampus,40%aregraduatestudents.WhatpercentageofUSstudentsaregraduatestudentslivingoncampus?
(A)90%(B)5%(C)40%(D)20%(E)25%
Question#2:
Inthefigurebelow,MNisparallelwithBCandAM/AB=2/3.WhatistheratiobetweentheareaoftriangleAMNandtheareaoftriangleABC?
(A)5/9(B)2/3(C)4/9(D)1/2(E)2/9
Question#3:
Ifa2+3isdivisibleby7,whichofthefollowingvaluescanbea?
(A)7(B)8(C)9(D)11(E)4
Question#4:
Whatisthevalueofb,ifx=2isasolutionofequationx2-b·x+1=0?
(A)1/2(B)-1/2(C)5/2(D)-5/2(E)2
Question#5:
Whichvalueofxsatisfiestheinequality|2x| (A)-1/2(B)1/2(C)1(D)-1(E)2 Question#6: Ifintegersm>2andn>2,howmany(m,n)pairssatisfytheinequalitymn<100? (A)2(B)3(C)4(D)5(E)7 Question#7: TheUSdeerpopulationincreaseis50%every20years.Howmaytimeslargerwillthedeerpopulationbein60years? (A)(B)(C)(D)(E) Question#8: Findthevalueofxifx+y=13andx-y=5. (A)2(B)3(C)6(D)9(E)4 Question#9: US UK Medals 3 2 gold 1 4 silver 4 1 bronze Thenumberofmedalswonatatrackandfieldchampionshipisshowninthetableabove.WhatisthepercentageofbronzemedalswonbyUKoutofallmedalswonbythe2teams? (A)20%(B)6.66%(C)26.6%(D)33.3%(E)10% Question#10: Theedgesofacubeareeach4incheslong.Whatisthesurfacearea,insquareinches,ofthiscube? (A)66(B)60(C)76(D)96(E)65 Question#1: Thesumofthetwosolutionsofthequadraticequationf(x)=0isequalto1andtheproductofthesolutionsisequalto-20.Whatarethesolutionsoftheequationf(x)=16-x? (a)x1=3andx2=-3(b)x1=6andx2=-6 (c)x1=5andx2=-4(d)x1=-5andx2=4 (e)x1=6andx2=0 Question#2: Inthe(x,y)coordinateplane,threelineshavetheequations: l1: y=ax+1 l2: y=bx+2 l3: y=cx+3 Whichofthefollowingmaybevaluesofa,bandc,iflinel3isperpendiculartobothlinesl1andl2? (a)a=-2,b=-2,c=.5(b)a=-2,b=-2,c=2 (c)a=-2,b=-2,c=-2(d)a=-2,b=2,c=.5 (e)a=2,b=-2,c=2 Question#3: Themanagementteamofacompanyhas250menand125women.If200ofthemanagershaveamasterdegree,and100ofthemanagerswiththemasterdegreearewomen,howmanyofthemanagersaremenwithoutamasterdegree? (a)125(b)150(c)175(d)200(e)225 Question#4: Inthefigurebelow,theareaofsquareABCDisequaltothesumoftheareasoftrianglesABEandDCE.IfAB=6,thenCE= (a)5(b)6(c)2(d)3(e)4 Question#5: Ifαandβaretheanglesoftherighttriangleshowninthefigureabove,thensin2α+sin2βisequalto: (a)cos(β)(b)sin(β)(c)1(d)cos2(β)(e)-1 Question#6: Theaverageofnumbers(a+9)and(a-1)isequaltob,whereaandbareintegers.Theproductofthesametwointegersisequalto(b-1)2.Whatisthevalueofa? (a)a=9(b)a=1(c)a=0(d)a=5(e)a=11 Question#1: Iff(x)=xandg(x)=√x,x≥0,whatarethesolutionsoff(x)=g(x)? (A)
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