A rectangular tabletop consists of a piece of laminated wood bordered by a thin

游客2025-02-24 19

问题 A rectangular tabletop consists of a piece of laminated wood bordered by a thin metal strip along its four edges. The surface area of the tabletop is x square feet, and the total length of the strip before it was attached was x feet. If the tabletop is 3 feet wide, what is its approximate length, in feet?

选项 A、12
B、10
C、9
D、8
E、6

答案 E

解析一个长方形的桌面由一块四周镶有薄金属条的薄木板组成，桌面的面积为x平方英尺，金属条在镶上去之前的总长度为x英尺，若桌面的宽度为3英尺，问其长度大约是多少英尺?
解：本题的正确答案为(E)。设桌面的长度为y英尺，则2(y+3)=x, 3y=x , so, y=6

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A rectangular tabletop consists of a piece of laminated wood bordered by a thin

[img]ct_gre5image060[/img]Therectangularsolidaboveismadeupofeightcubes

[img]ct_gre5image076[/img]Thepoint(notshown)withrectangularcoordinates(m

[img]ct_gre5image018[/img]Thediagramrepresentsarectangulargarden.Theshad

Arectangularfloor18feetby10feetistobecompletelycoveredwithcarpetin

Youareapplyingfertilizertoyourbackyard.Therectangularyardmeasures40f

Whatisthesurfaceareaofarightrectangularsolidwithdimensions4by7by

[img]ct_gre5image064[/img]Intherectangularcoordinatesystem,segmentOPisr

Anidentificationcodereadfromlefttorightconsistsof2digits,adash,3d

[img]ct_gre5image006[/img]Therectangularrugshowninthefigureabovehasaf

[img]ct_gre5image096[/img]TheshadedregionisrectangularColumnA

Theamazingsuccessofhumansasa【1】istheresultoftheevolutionarydevel

Thoseworld-famousoilpaintings(exhibit)______attheMuseumofNewYorknoware

学校德育的基本途径是（）A.教学 B.社会实践活动 C.课外活动 D.班

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