Mikilenchen Mikilenchen 21-04-2017 Mathematics contestada Which shows the expression below simplified? (2.2 x 10^-1) + (2.3 x 10^-2) Hint: You must have the same power of 10 before you can add. A) 2.43 x 10^-2 B) 4.5 x 10^-1 C) 4.5 x 10^-2 D) 2.43 x 10^-1