Question

Which equation has a solution of x = 4.5?

A. 7 - x = 3.5

B. 2x = 10

C. 3x = 13.5

D. x + 4 = 4.9

Answer 1

The answer is C.

Explanation:

Answer 2

C. 3x = 13.5

Explanation:

To find which equation has a solution of x = 4.5, we must input 4.5 in each equation in for x.

A. 7 - 4.5 = 3.5

This is untrue, as 7 - 4.5 is 2.5, not 3.5

B. 2 (4.5) = 10

This is untrue, as 2 x 4.5 is 9, not 10

D. 4.5 + 4 = 4.9

This is untrue, as 4.5 + 4 is 8.5, not 4.9

C. 3 (4.5) = 13.5

This is true, because 3 x 4.5 is 13.5!

I hope this helps.