ctlyo
ei
tegeri
commo
Thesumofthei
tegersi
thesetwithgreater
umbersishowmuchgreatertha
thesumofthei
tegersi
theothersetA4B7C8D12Eitca
otbedetermi
edfromthei
formatio
give
答案：1CorrectA
swerBExpla
atio
Themarkeda
gleABCmustbemoretha
90degreesbecauseitistheexter
ala
gleoftria
gleBDCa
dmustbeequaltothesumofa
glesBDC90a
dDCBAlsoABCis
otastraightli
ea
dmustbelesstha
180Therefore905x180Theo
lyvalueofxwhichsatisfiesthisrelatio
is202CorrectA
swerAExpla
atio
20largecakeswillrequiretheequivale
tof10helpersworki
gforo
ehour700smallcakeswillrequiretheequivale
tof20helpersworki
gforo
ehourThismea
sifo
lyo
ehourwereavailablewewould
eed30helpersButsi
cethreehoursareavailableweca
use10helpers3CorrectA
swerEExpla
atio
I
dia
stampsarecommo
tobothratiosMultiplybothratiosbyfactorssuchthattheI
dia
stampsarereprese
tedbythesame
umberUSI
dia
52a
dI
dia
British51Multiplythefirstby5a
dtheseco
dby2
fNowUSI
dia
2510a
dI
dia
British102He
cethetworatiosca
becombi
eda
dUSBritish252
4CorrectA
swerCExpla
atio
DrawthediagramThediago
aloftherecta
gleisthediameterofthecircleThediago
alisthehypote
useofa345tria
glea
distherefore5Circumfere
ceπdiameter5π5CorrectA
swerDExpla
atio
Iftwosetsoffourco
secutivei
tegershaveo
ei
tegeri
commo
thetotali
thecombi
edsetis7a
dweca
writethesetsas
1
2
3a
d
3
4
5
6Notethateachtermi
theseco
dsetis3moretha
theequivale
ttermi
thefirstsetSi
cetherearefourtermsthetotalofthediffere
ceswillbe4x312
SAT考试数学练习题4
来源91SAT考试网时间2009年08月20日
1Iffxx2x2foralli
tegersexceptx2whichofthefollowi
ghasthegreatestvalue
Af1Bf0Cf1Df3Ef4
2ABCDisasquareofside3a
dEa
dFarethemidpoi
tsofsidesABa
dBCrespectivelyWhatistheareaofthequadrilateralEBFD
A225B3C4D45E6
f3If
≠0whichofthefollowi
gmustbegreatertha
I2
II
III2
AIo
lyBIIo
lyCIa
dIIo
lyDIIa
dIIIo
lyENo
e4Afterbei
gdroppedacertai
ballalwaysbou
cesbackto25oftheheightofitspreviousbou
ceAfterthefirstbou
ceitreachesaheightof125i
chesHowhighi
i
cheswillitreachafteritsfourthbou
ceA20B15C8D5E325
a
dparei
tegersgreatertha
15
isthesquareofa
umber75
pisthecubeofa
umberThesmallestvaluefor
pisA14B18C20D30E50
答案：1CorrectA
swerDExpla
atio
Youca
solvethisbybacksolvi
gsubstitutethea
swerchoicesi
theexpressio
a
dsr