The expression d/t can be used to find the average speed of an object that travels a distance stand which is the d and time which is the t. what is the cars average speed if it travels 145 miles in 2.5 hours.

a. 58 miles per hour
b. 62 miles per hour
c. 65 miles per hour
d. 362.5 miles per hour

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)

definitely a. the others have almost all data points on one side of the line.

step-by-step explanation: