Angle a measures 50 degrees. if angle a is rotated 45 degrees, what is the measure of angle a′?

Which function in vertex form is equivalent to f(x) = x2 + 6x + 3? f(x) = (x + 3)2 + 3 f(x) = (x + 3)2 − 6 f(x) = (x + 6)2 + 3 f(x) = (x + 6)2 − 6

Find the distance between the pair of points a(-1,8) and b(-8,4)

Find the solution of this system of equations -7x+y=-20 9x-3y=36