The dot product of u with itself is 12. what is the magnitude of u?

In the diagram, the measure of angle 9 is 85° which angle must also measure 85°?

Diana is painting statues she has 7/8 of a liter of paint each statue requires 1/20 of a liter of paint how many statues can she paint?

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?