Question

If the perimeter of a triangle is 8x + 6y, and two of the sides are 2x + 2y and 5x − y, which is the third side?

A.x + 5y
B. x + 4y
C. 5x + y
D. 2x + 2y

Answer 1

.x +5y is the correct answer!

Answer 2

A.x + 5y

Explanation:

let 3rd side be z

P=2x+2y+5x-y+z=8x + 6y

7x+y+z=8x+6y

z=8x+6y-7x-y=x+5y (⇒ A)