Answer
$2.1\times10^{3}$
Work Step by Step
$\frac{8.4\times10^{8}}{4\times10^{5}}=\frac{8.4}{4}\times\frac{10^{8}}{10^{5}}=2.1\times10^{3}$
Precalculus (6th Edition) Blitzer
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13446-914-3
ISBN 13:
978-0-13446-914-0
Chapter P - Section P.2 - Exponents and Scientific Notation - Exercise Set - Page 30: 95
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