Charlyn991 Charlyn991

20-05-2014
Mathematics

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a helicopter blade spins 775 times in 3 minutes. find the rate of the revolutions per second.

Respuesta :

20-05-2014

Use the proportions property:

775 times ---------- 180 sec
x ---------- 1 sec

[tex]x=\frac{775}{180}=4.3 \ times \ per \ sec[/tex]

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