Answer
$2.7\times10^{-20}$
Work Step by Step
Using laws of exponents, the given expression simplifies to
\begin{align*}
&
(3\times10^{-7})^3
\\\\&=
3^3\times10^{3(-7)}
\\\\&=
27\times10^{-21}
\\\\&=
2.7\times10^{-20}
.\end{align*}
Intermediate Algebra (6th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321785045
ISBN 13:
978-0-32178-504-6
Chapter 5 - Section 5.2 - More Work with Exponents and Scientific Notation - Exercise Set - Page 268: 72
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