Intermediate Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-894-7
ISBN 13: 978-0-13417-894-3

Chapter 1 - Section 1.7 - Scientific Notation - Exercise Set - Page 90: 58



Work Step by Step

Divide equation with $(-7.8\times10^{-4}).$ $x=\frac{(3.9\times10^{-7})(6.8\times10^{5})}{-7.8\times10^{-4}}$ $x=(\frac{3.9\times6.8}{-7.8})\times(\frac{10^{-7}\times10^{5}}{10^{-4}})$ $x=-3.4\times10^{-7+5-(-4)}=-3.4\times10^{2}$
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