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 - 5.6 Exponents and Scientific Notation - Concept and Vocabulary Check: 10

Answer

False. $\$347 \text{ billion} =3.47 \times 10^{11}$ dollars

Work Step by Step

A number in scientific notation is of the form $a \times 10^n$, where $1 \le a \lt 10$, and $n$ is an integer. Thus, $347 \times 10^9$ is not in scientific notation. Move the decimal point 2 places to the left and then increase the power of 10 by 2 to retain the value and obtain: $=3.47 \times 10^{9+2} \\=3.47 \times 10^{11}$
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