If a marble rotates 180 degrees in 9 seconds, how many does it rotate in 18 seconds.

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04-02-2016
Mathematics

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If a marble rotates 180 degrees in 9 seconds, how many does it rotate in 18 seconds.

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starrynightsky starrynightsky · Answer 1 · 2016-02-04T02:10:59+01:00

starrynightsky starrynightsky

04-02-2016

It would rotate 360 degrees because 18 seconds is twice the amount of 9 seconds, so you need to multiply 180 by 2, which is 360, or one full rotation.

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ViolaPlayer678 ViolaPlayer678 · Answer 2 · 2016-02-04T02:11:46+01:00

ViolaPlayer678 ViolaPlayer678

04-02-2016

since 9*2=18 all you have to do is the same to 180...

180*2=360

Answer: The marble rotates 360 degrees in 18 seconds

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