Question

From the set {4, 8, 16}, use substitution to determine which value of x makes the equation true.

360 ÷ x = 45

Answer 1

8

Explanation:

Use substitution: substitute each number from the set in for x, and see if the result from dividing is 45.

4

360/x=45

360/4=90

90 ≠ 45

Therefore, 4 does not make the equation true

8

360/x=45

360/8=45

45=45

Therefore, 8 does make the equation true.

16

360/x=45

360/16=22.5

22.5 ≠ 45

Therefore, 16 does not make the equation true.

So, 8 is the value that makes the equation true