Answer
$10^{-2}\,m$
Work Step by Step
Recall the property
$a^{m}\cdot a^{n}=a^{m+n}$
Magnified length= $10^{-7}\,m\cdot10^{5}=10^{-7+5}\,m=10^{-2}\,m$
Big Ideas Math - Algebra 1, A Common Core Curriculum
by Larson, Ron; Boswell, Laurie
Published by
Big Ideas Learning LLC
ISBN 10:
978-1-60840-838-2
ISBN 13:
978-1-60840-838-2
Chapter 6 - Exponential Functions and Sequences - 6.1 - Properties of Exponents - Exercises - Page 296: 33
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