Elementary Technical Mathematics

Published by Brooks Cole
ISBN 10: 1285199197
ISBN 13: 978-1-28519-919-1

Chapter 2 - Review - Page 133: 39

Answer

$$2\times 10^{20}.$$

Work Step by Step

By raising each factor to the exponent and multiplying the double exponents, we have $$ \frac{(50,000)(640,000,000)}{(0.0004)^2}=\frac{32,000,000,000,000}{0.00000016}\\ =2\times 10^{12+8}=2\times 10^{20}. $$ which is in the scientific notation.
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