Question

How do you write the answer in scientific notation given `(2.6times10^-7)(1.3times10^2)`?

Answer 1

You multiply the numbers and add the 10-powers:

Explanation:

`=(2.6xx1.3)xx(10^(-7+2))`

`=3.38xx10^(-5)~~3.4xx10^(-5)` (rounding for significance)