Thinking Mathematically (6th Edition)

Published by Pearson
ISBN 10: 0321867327
ISBN 13: 978-0-32186-732-2

Chapter 5 - Number Theory and the Real Number System - Chapter 5 Test: 23

Answer

$7 \times 10^6$

Work Step by Step

Express each number in scientific notation to obtain: $=\dfrac{4.9 \times 10^4}{7 \times10^{-3}}$ Divide 4.9 and 7 together and the powers of 10 together to obtain: $=\dfrac{4.9}{7} \times \dfrac{10^4}{10^{-3}} \\=0.7 \times 10^{4-(-3)} \\=0.7 \times 10^{4+3} \\=0.7 \times 10^7 \\=(7 \times 10^{-1}) \times 10^7 \\=7 \times 10^{-1+7} \\=7 \times 10^6$
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