The value of x in the expression, x 2 = 9 is 4.5
9 divided by 2 = 4.5
70 degrees! This is the answer. Notice that the triangle ACF is isosceles, therefore, 35, 35 degrees, and 110 the vertex at F, then AB is 180 deg, so 70 left!
I got x = 4-2y
4x+8y=16
-8y=-8y
4x=16-8y
— ——-
4 4
x=4-2y