Answer
500,000
Work Step by Step
Divide the coefficients and subtract the exponents.
$\frac{25\times10^{-4}}{5\times10^{-9}}$
=$5\times10^{5}$ $\longrightarrow$move the decimal 5 places to the right
=$500000$
Prealgebra (7th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321955048
ISBN 13:
978-0-32195-504-3
Appendix C - Exercise Set - Page 746: 30
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