Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 12 - Section 12.7 - Common Logarithms, Natural Logarithms, and Change of Base - Practice: 10

Answer

{$\frac{e^{10}}{7}$}, {$3146.6380$}

Work Step by Step

$\ln 7x=10$ $7x=e^{10}$ $x=\frac{e^{10}}{7}\approx3146.6380$ The exact solution is {$\frac{e^{10}}{7}$}, while the solution to four decimal places is {$3146.6380$}.
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