Find the midpoint of each number. -4 and 20 (show all work) will give brainliest

Which fraction below is equivalent to 10/12?

Asailor is looking at a kite. if he is looking at the kite at an angle of elevation of 36and the distance from the boat to the point where the kite is directly overhead is 40 feet, how high is the kite?

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)