Find the midpoint of points A(9,2) and B(6,-4) graphically.

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)

Justin has 750 more than eva and eva has 12 less than justin together they have a total of 63 how much money did

Grace is standing 18 feet from a lighthouse and kelly is standing 10 feet from grace. the angle that grace looks up to see the top of the lighthouse is 45°. the angle that kelly looks up to see the top of the lighthouse is y°. find the height, h, of the lighthouse. find the angle, rounded to the nearest tenth of a degree, in which kelly looks up to the top of the lighthouse. to the nearest tenth of a degree, find the value of x° . in two or more sentences, explain your calculations