Answer
20,000,000
Work Step by Step
Multiply the corresponding parts together to find
$=(5 \cdot 4) \times (10^2 \cdot 10^4)
\\=20 \times 10^{2+4}
\\=20 \times 10^6
\\=2 \times 10^7\\20,000,000$
Thinking Mathematically (6th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0321867327
ISBN 13:
978-0-32186-732-2
Chapter 5 - Number Theory and the Real Number System - 5.6 Exponents and Scientific Notation - Exercise Set 5.6 - Page 320: 80
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