Intermediate Algebra (6th Edition)

Published by Pearson
ISBN 10: 0321785045
ISBN 13: 978-0-32178-504-6

Chapter 9 - Section 9.7 - Common Logarithms, Natural Logarithms, and Change of Base - Exercise Set: 16

Answer

4

Work Step by Step

A common logarithm is a logarithm to base 10. As shown on page 580, when a common logarithm is written in the form $log(x)$, this is equivalent to the expression $log_{10}x$. Therefore, $log 10000=log_{10}10000=4$. We know this, because $10^{4}=10000$.
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