Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter P - Section P.2 - Exponents and Scientific Notation - Exercise Set - Page 30: 90

Answer

$$4.2 \times 10^4$$

Work Step by Step

\begin{align} (1.4 \times 10^{15})(3 \times 10^{-11}) & = (1.4 \times 3)(10^{15} \times 10^{-11})\\ &= 4.2 \times 10^{15-11} \\ &=4.2 \times 10^{4} \end{align}
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