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: 115

Answer

$3.0\times10^{-21}$

Work Step by Step

Using the laws of exponents and the concepts of scientific notation, the given expression, $ \dfrac{7.5\times10^{-9}}{2.5\times10^{12}} $, simplifies to \begin{array}{l} (7.5\div2.5)\times10^{-9-12} \\\\= 3.0\times10^{-21} .\end{array}
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