If m/m+n =5/7, what is the value of 3n/m?
( show me the steps to getting the answer) youu!

a. 10/7
b. 6/5
c. 1/2
d. 15/2

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 =

Michael is training for a marathon. in his first week he plans to run 8miles. what path should he take

Aregular hexagonal pyramid has a base area of 45 in2 and a lateral area of 135in 2. what is the surface are are of the regular hexagonal pyramid