Answer
0.000002
Work Step by Step
Divide the coefficients and subtract the exponents.
$\frac{0.4\times10^{5}}{0.2\times10^{11}}$
=$2\times10^{-6}$ $\longrightarrow$move the decimal 6 places to the left
=$0.000002$
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: 32
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