(1-2sin^2x/cosx + sinx) + 2sin(x/2)cos(x/2) = cosx this is trigonometric i have to show how the ls = rs

You paint a 1/2 of a wall in 1/4 hour. how long will it take you to paint one wall

Antonia and carla have an equivalant percentage of green marbles in their bags of marbles. antonia has 4 green marbles and 16 total matbles. if carla has 10 green marbles , how many total marbles does carla have

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?