Question

What is the value of the expression All of 2.6 multiplied by 10 to the power 9 over all of 1.3 multiplied by 10 to the power 2?

1.3 × 107
2.0 × 107
1.3 × 1011
2.0 × 1011

Answer 1

On my phone, apologies for formatting

(2.6 * 10^10)
——
(1.3 * 10^2)

First divide 2.6/1.3 to get 2.0

When you divide 10^ 7 by 10^2, keep the base 10, subtract the exponents

Answer 2

Please note that “over” implies division not multiplication