Question

Perform the following operation
and express the answer in
scientific notation.
5.0x10-5 +2.0x10-4

Answer 1

Answer:

$2.5$ × $10^{-4}$

Explanation:

$5+10^{-5} + 2$ × $10^{-4} = 0.5$ × $10^{-4} + 2$ × $10^{-4}$

$0.5$ × $10^{-4} + 2$ × $10^{-4}$ = $2.5$ × $10^{-4}$

Answer 2

Answer:

2.3x10^-4

Explanation:

This is easy