A swimming pool is three times as long as it is wide. the sidewalk around the pool is 72 yds long. determine the length and width of the pool

Length - 54 yds

Width - 18 yds

Step-by-step explanation:

72 yds = perimeter

3x + x =72

4x = 72

Since 4x equals 72, you would divide 72 by 4 to find out how much x equals.

72/4 = 18 yds

18 yds = width

Since the length is three times as long as the width, you would multiply 18 by 3.

18 x 3 = 54

54 yds = length

the answer for this question is 38

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.