For the circle(x- 1)2 +(y+ 1)2= 20 in the xy-plane, find the following. (a)Coordinates of the center (b)Radius (c)Area

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问题 For the circle(x- 1)² +(y+ 1)²= 20 in the xy-plane, find the following.
(a)Coordinates of the center
(b)Radius
(c)Area

选项

答案(a)(1,-1) (b)[*] (c)20π

解析

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For the circle(x- 1)2 +(y+ 1)2= 20 in the xy-plane, find the following. (a)Coordinates of the center (b)Radius (c)Area

GRE QUANTITATIVE

GRE

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AsTheplanecircledovertheairport,everyonesensedthatsomethingwaswrong.Theplanewasmovingunsteadilythroughtheair

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TheAmericansgotothemoviesmainlybecausetheywant______.Whichofthefollowingispeople’snormalresponsetothemovie

Byadoptingafewsimpletechniques,parentswhoreadtotheirchildrencangreatlyincreasetheirchildren’slanguagedevelopme

Whatyou’realwaysheard?We’reeatingtoomuchsalt.TheaverageAmericangetsabout3.4gramsofsodiumeveryday,farmoreth

Woman:DoyougetthePublicBroadcastingSystemonTV?Man:Yes,everybodygetsPBS.【D5】______Woman:It’sboringandof

Astorebought5dozenlampsat＄30perdozenandsoldthemallat＄15perlamp．Theprofitoneachlampwaswhatpercentofits

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For the circle(x- 1)2 +(y+ 1)2= 20 in the xy-plane, find the following. (a)Coordinates of the center (b)Radius (c)Area

GRE QUANTITATIVE

GRE

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Businesseslargeand【C1】,nowrealizethatphysicalworkspaceinfluencesemployeebehaviour.【C2】,businessesarered