One pump fills a tank 3 times as fast as another pump. if the pumps work together, they fill the tank in 12 minutes. how long does it take for the faster pump to fill the tank?

The sum of two numbers is 86, and their difference is 20. find the two numbers

To solve the system of equations below, pedro isolated the variable y in the first equation and then substituted it into the second equation. what was the resulting equation? { 5y=10x {x^2+y^2=36

If (x-2) 2= 49, then x could be a. -9 b. -7 c.- 2 d. 5 e.9