Two trucks started toward each other at the same time from towns 500 km apart. one truck traveled at a rate of 65 km per hour while the other traveled at 60 km per hour. after how many hours did they meet? if x represents the number of hours, which of the following equations could be used to solve the problem? 65x = 60x 65x - 60x = 500 65x + 60x = 500

step-by-step explanation:

compare

step-by-step explanation:

the ratio of red paint to blue paint is always 9/7. that means that, whatever x's value, (4x+12)/(4x-4) has that same ratio. so, set up an equation and cross-multiply to solve for x:

9/7 = (4x+12)/(4x-4)

9(4x-4) = 7(4x+12)

36x - 36 = 28x + 84

8x - 36 = 84

8x = 120

x = 15

d. corresponding side lengths in similar triangles are proportional in length.

step-by-step explanation: