I NEED HELP FAST PLEASE! The measures of the angles of a triangle are shown in the figure below. Find the measure of the smallest angle.
(3X-9°
(x+15)



Icould really use some with this question.

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?

The first few steps in solving the quadratic equation 9x2 + 49x = 22 ? 5x by completing the square are shown. 9x2 + 49x = 22 ? 5x 9x2 + 54x = 22 9(x2 + 6x) = 22 which is the best step to do next to solve the equation by completing the square? 9(x2 + 6x + 3) = 25 9(x2 + 6x + 3) = 49 9(x2 + 6x + 9) = 31 9(x2 + 6x + 9) = 103