PLEASE HELP QUICK!! I NEED IT ASAP 3.

∠1 and ∠2 are complementary. ∠1=x°∠2=(3x+30)° select from the drop down menu to correctly answer the question. what is the value of x? . a.15 b.25 c.30 d.40 e.55

Asquare and an equilateral triangle have the same perimeter. each side the triangle is 4 inches longer than each side of the square. what is the perimeter of the square

What are the solutions for the following system? -2x^2+y=-5 y=-3x^2+5