Question

How do you simplify `(0.4 times 10^-6)(0.7 times 10^-2)`?

Answer 1

`28/10^10`

Explanation:

`(0.4xx10^-6)(0.7xx10^-2)`

`=(4/10xx10^-6)xx(7/10xx10^-2)`

`=(4/10xx1/10^6)xx(7/10xx1/10^2)`

`=(4/10^7)xx(7/10^3)`

`=28/10^10=0.0000000028`