This is more a math question but no one is answering in the "math" section.
Compute 6.28x10^13 +6.30x10^11. Express your answer to three significant figures.

Respuesta :

let be A=6.28x10^13 +6.30x10^11
so A= (
6.28x10^2 +6.30)x10^11= 634.3 x 10^11=  6.343 x 10^12
A= 6.343 x 10^12