A student bought shoes online. The total cost, t, of the pairs of shoes, s, can be found by the function below. If the student spent $569.37 on shoes, how many pairs did he buy? t = 62.50x +7.23

D 9

Step-by-step explanation:

569.37 = 62.50x + 7.23

562.14 = 62.5x

x = 9.04 so 9 pairs

one that is bigger than 3 1/2

x =±sqrt(1/3)

step-by-step explanation:

x+4/6x=1/x

multiply each side by 6x to get rid of the fractions

6x*(x+4/6x)=1/x*6x

distribute

6x^2 +4 = 6

subtract 4 from each side

6x^2 +4-4 = 6-4

6x^2 =2

divide by 6

6x^2/6 = 2/6

x^2 = 1/3

take the square root of each side

sqrt(x^2) = ±sqrt(1/3)

x =±sqrt(1/3)