The following figure is not drawn to scale. Find the marked unknown angle. 390 90° a Za=

50 plz, given the system of equations, match the following items. x + 3 y = 5 x - 3 y = -1 a) x-determinant b) y-determinant c) system determinant match the following to the pictures below.

What is the name of a polygon that has four congruent sides and theses angle measures 60,120,60,120?

During a wright loss challenge your friend goes from 125 pounds to 100 pounds.what was the percent weight loss