HELP ME PLEASE Which of the following ratios are equivalent to 6:8?

24:36
9:12
12 to 16
16 to 24
36/40
15/20

The parabola opens: y=√x-4 (principal square root) up down right left

Aball is thrown from a height of 139 feet with an initial downward velocity of 15 ft/s. the ball's height h (in feet) after t seconds is given by the following. h=139-15t-16t^2 how long after the ball is thrown does it hit the ground? round your answer(s) to the nearest hundredth. (if there is more than one answer, use the "or" button.) t =

You are designing a rectangular pet pen for your new baby puppy. you have 30 feet of fencing you would like the fencing to be 6 1/3 feet longer than the width