If ad = 3x + 2 and cd = x + 6, what is the value of x?

Show your workcan a right triangle have this sides? *how to prove it without using the pythagorean theorema*

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

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.