Which of the following is equivalent to (4 x 10^-7) + (5 x 10^-7)

A. 9 x 20^-14

B. 90^-7

C. 9 x 10^-7

D. 9 x 20^-7

What is 1/4 divided by 5?

One winter day the temperature dropped sharply during the afternoon. Tatiana recorded a change of - 19.5 degrees Celsius in 3.75 hours. What was the average change in temperature per hour? Enter your answer as a decimal in the box.

Simplify the radical expression by rationalizing the denominat o 3/11

Is 2/5=5/10 correct or incorrect?

The radius of a circle is 10 ft. Find its area in terms of pi

What is 17 and five divided by 8

One rate of an equivalent ratio is 9/n. Select two other rates, one that can be solved by using equivalent fractions and the other by unit rates 0

4 (4) 4 (5) 4 (6) 4 (7) 4 (8) 4 (9) 4 (10)

What equivalent fraction is equal to 0 out of 6

John and his family are going on vacation they travel 137.5 miles in 2.5 hours. what is the average miles per hours that they travel?