How to find multiples of a number on a calculator

Which graph represents the same relation is the sa which graph represents the same relation as the set {(-3-2)}

Cos^2x+cos^2(120°+x)+cos^2(120°-x)i need this asap. pls me

21 type the correct answer in each box. if necessary, round your answers to the nearest hundredth the vertices of abc are a(2,8), b(16, 2), and c(6,2). the perimeter of abc is units, and its area is square units