A circular wheel travels along a flat surface at a constant rate of 2.5 feet per

游客2025-02-23 33

问题 A circular wheel travels along a flat surface at a constant rate of 2.5 feet per second. How many complete revolutions will the wheel make in 50 seconds if its diameter is 3 feet?

选项 A、6
B、10
C、13
D、14
E、19

答案 C

解析 50秒内轮子走过的距离：轮子的周长(πd)×圈数。50×2.5=π×3×revolutions=13＜revolution＜14。

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A circular wheel travels along a flat surface at a constant rate of 2.5 feet per

Howmuchlongeristheedgeofacubewithasurfaceareaof1,350thantheedge

DISPARATE:A、helpfulB、increasingC、constantD、homogeneousE、convincingD

Thedriverwasexcessively______,constantlyapologizingforthecar’spoorsusp

Astheyearswentby,Kingsley’slettersdisplayedhimdecliningintoaconstant

SEPTIC:A、constantB、consistentlyarrangedC、devoidofinfectionD、ofunidentifie

DISPARATE:A、helpfulB、increasingC、constantD、homogeneousE、convincingD

Scientistsbelievethatbyraisingatmosphericpressureandsurfacetemperature,

Whenhomeisapproximately2,000feetunderthesurfaceofthesea,itischalle

Infrigidregionsalayerofpermafrostunderthesoilsurfacepreventswaterfr

Ryan’s______botheredhisfriends,whotiredofinstabilityandconstantchanges

Ourtimesseemespecially______tobadideas,probablybecauseinthrowingoffth

Whileattendingahighereducationsystemoffersmanypositives,italsooff

BOOKREVIEWMarkWertman’s

[audioFiles]2021m5x/audio_ve01005j_ezflisteningxa_0117_202105[/audioFiles]

[originaltext]IntheUnitedStates,manypeopleoncelivedinlarge,two-an

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在变更申请中，应包括的内容主要有（ ） ①变更的原因 ②变更的依据 ③变

电焊软线冒烟、着火，应断开电源，用()沿电焊软线喷洒灭火。（A）泡沫灭火器

A. B.2 C. D.0

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