Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

Published by Pearson
ISBN 10: 0-32184-874-8
ISBN 13: 978-0-32184-874-1

Chapter 4 - Polynomials - 4.2 Negative Exponents and Scientific Notations - 4.2 Exercise Set - Page 244: 9


positive power of 10

Work Step by Step

The length of an Olympic marathon is $42.195$ kilometers. Each kilometer is equivalent to $100,000$ centimeters. Thus, the length of the Olympic marathon in centimeters is: $=42.195 \times 10,000 \\=4,219,500$ Since the measurement involves a big number, then its equivalent scientific notation must have a positive power of 10.
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