Evaluate a2 + b for a = 1\2 and b =-1\2.

Aladder that is 20ft long is leaning against the side of a building. if the angle formed between the ladder and the ground is 75 degrees how far is the bottom of the from the base of the building?

Which equation can be used to measure the density of water in a spherical water tank? let w represent the number of water particles within the region.

John kept track of how many baskets were made in a basketball game. after 4 minutes, 5 baskets were made. how many baskets were made between 9 and 10 minutes? a. 0 b. 1 c. 2 d. 3