How do you divide $\frac { 0.8\times 10^ { - 7} } { 4\times 10^ { - 4} }$ ?

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Answer 1 · 2017-08-31T08:56:41

$2 * 10^-4$

Sorry, I don't know how to use this site. I hope you understand.

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Answer 2 · 2017-08-31T14:06:16

$2xx10^(-4)$

$(color(red)(0.8xx10^(-7)))/(color(green)(4xx10^(-4)))$

This is the same as $color(red)((0.8color(green)(xx10^4))/(color(green)(4)xx10^7))$

Which is also the same as $(8xx10^3)/(4xx10^7)$

This is the same as $2xx10^(3-7)" "=" "2xx10^(-4)$

How do you divide \frac { 0.8\times 10^ { - 7} } { 4\times 10^ { - 4} }\frac { 0.8\times 10^ { - 7} } { 4\times 10^ { - 4} }?