PLEASE ANSWER QUESTION 6 THROGH 10 IM GIVING 24 POINTS

The perimeter of a movie screen is 54 meters. the screen is 18 meters wide. how tall is it?

Cot(90° − x) = 1 the value of x that satisfies this equation is °. a. 60 b. 135 c. 225 d. 315

Which equation shows the variable terms isolated on one side and the constant terms isolated on the other side for the equation -1/2x+3=4-1/4x? a. -1/4x=1 b. -3/4x=1 c. 7=1/4x d. 7=3/4x