Suppose y varies directly with x. Write a direct variation equation that relates x and y when y = 12 and x = 24. Then find the value of y when x = 20.

20

Step-by-step explanation:

x = 20.

answer: 457.14

step-by-step explanation:

205 - 45 = 160

160 / .35 = 457.142857

46

step-by-step explanation:

given

height = 168 cm

formula

height =2.47*f+54.13

solution

168 = 2.47f + 54.13             subtract 54.13 from both sides

168 - 54.13   = 2.47f             combine

113.87 = 2.47f                     divide by 2.47

113.87 / 2.47 = f                   combine

46.1 = f  

answer: 46 cm