The base of an 11-foot ladder is 5 feet from a building. if the ladder reaches the flat roof, how tall is the building

Question: what is the value of x 4x-2= (-7) +5x. it would be greatly appreciated if someone could actually explain to me step by step

How many $20 bills do you need to have to make $280

1) in triangle the, what is the measure of angle t (in degrees)? 2) in triangle bat, the measure of angle b is 66∘, and the measure of angle t is 77∘.what is the measure of the exterior angle at a (in degrees)?