How do you multiply $5 \cdot 4.0 x 10^{- 4}$ $5 *4.0 x 10^-4$ ?

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Answer 1 · 2015-04-19T15:40:49

$5 \cdot 4 \cdot 10^{- 4}$ $5 * 4 * 10^(-4)$

$= 20 \cdot \frac{1}{10, 000}$ $=20 * 1/(10,000)$

$= \frac{20}{10, 000}$ $=20/(10,000)$

$= \frac{20 \cdot 1}{20 \cdot 500}$ $=(20 * 1)/(20 * 500)$

$= \frac{1}{500}$ $=1/500$

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