What is the shape of the dark grey area representing the intersection of the plane and the sphere

Complex numbers multiply √-4 * √-25 and show all intermediate steps. alternative notation is sqrt(-4) * sqrt(-25).

After t seconds, a ball tossed in the air from the ground level reaches a height of h feet given by the equation h = 144t-16t^2. after how many seconds will the ball hit the ground before rebounding?

Solve for x. −3/4(x+2)=6 enter your answer in the box