Roughly, it takes light less than 0.000000003 of a second to travel a one-meter distance. Express this number in the form of a × 10^n where 1 < a < 10 and is a one-digit number. (1 point)

Question

Responses

3 × 10^8

3 × 10^−8

3 × 10^−9

3 × 10^9

Answer 1

To express the number in the form of a × 10^n where 1 < a < 10, we need to move the decimal point to the left until the number is between 1 and 10.

0.000000003
= 3 × 10^(-9)