Question

the us postal service delivered 7.14 x 10^10 pieces of mail in month of decmember and 3.21 x 10^10 in month of janaury. What is the total mail delivered for these two months

Answer 1

The solution is 1.035 x 1011. Since the exponents are the same, we can add the bases. The result is 10.35 x 1010.

Explanation:

Because the base must be greater than 1, but less than 10 we have to move the decimal one place to the left. This increases the exponent from 10 to 11.

Answer 2

1.08 * 10^11 pieces of mail

Explanation:

like actually this is the right answer