Question

Solve the following system using substitution or elimination: The sides of a triangle have measures of x, x, and y, and the perimeter of the triangle is 46. The measure y is 4 centimeters longer than the measure x. Be sure to show all work.

Answer 1

y = x + 4

x + x + x + 4 = 46

3x + 4 = 46
3x = 42

x = 14
y = x + 4 = 18

Sides are 14, 14, and 18