Find the measure of the indicated angle to the nearest degree​

Draw a scaled copy of the circle using a scale factor of 2

Asystem of equations has 1 solution.if 4x-y=5 is one of the equations , which could be the other equation ?

Find the perimeter of the triangle with vertices  d(3, 4),  e(8, 7), and  f(5, 9). do not round before calculating the perimeter. after calculating the perimeter, round your answer to the nearest tenth.