#### Answer

$2.5\times10^1$

#### Work Step by Step

$\frac{5\times10^{-6}}{20\times10^{-8}}=\frac{5}{20}\times\frac{10^{-6}}{10^{-8}}=.25\times10^{-6--8}=.25\times10^2=2.5\times10^1$

Published by
Pearson

ISBN 10:
0-13446-914-3

ISBN 13:
978-0-13446-914-0

$2.5\times10^1$

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