What is the probability for 1 head and 2 tails in 3 tosses? add method.

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?

Solve the equation. 2x - 8(x+1)= 6(2x - 3)

The function f(x)= x5+ ( x + 3)2 is used to create a table. if x = -1 then what is f(x)?