Find the measures of two angles, one positive and one negative, that are coterminal with the given angle. 240°

Which of the following is the result of expanding

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.

Need same math paper but the back now i hope your able to read it cleary i need with hw