College Algebra (10th Edition)

Published by Pearson
ISBN 10: 0321979478
ISBN 13: 978-0-32197-947-6

Chapter R - Section R.2 - Algebra Essentials - R.2 Assess Your Understanding - Page 29: 162


$5.0\times 10^{2}$ seconds

Work Step by Step

Given that the speed of light is 186,000 miles per second, the time it takes light to cover 93,000,000 miles is $\displaystyle \frac{93,000,000}{186,000}=500$ seconds To write 500 in scientific notation, $500=5\times 100= 5.0\times 10^{2}$ seconds
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