What is 4.6 × 108 cm/min in meters per hour? A. 2.76 × 10^8 m/h B. 2.76 × 10^10 m/h C. 7.67 × 10^6 m/h D. 7.67 × 10^8 m/h

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05-09-2014
Mathematics

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What is 4.6 × 108 cm/min in meters per hour? A. 2.76 × 10^8 m/h B. 2.76 × 10^10 m/h C. 7.67 × 10^6 m/h D. 7.67 × 10^8 m/h

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Аноним Аноним · Answer 1 · 2014-09-05T09:50:47-04:00

Аноним Аноним

05-09-2014

[tex]1m=100cm\to1cm=0.01m\\1h=60min\to1min=\frac{1}{60}h\\========================\\\\4.6\times10^8\ cm/min=4.6\times10^8\times\frac{0.01m}{\frac{1}{60}h}=4.6\times10^8\times0.6\ m/h\\\\=\boxed{2.76\times10^8\ m/h}\\\\Answer:\fbox{A.}[/tex]

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