Question

two equal sides of a triangle are each 4 cm less than three times its third side if the perimeter of the triangle is 55 cm find the dimensions of all three sides​

Answer 1

Answer:

length of equal side = x

length of third side = y

perimeter = 2x + y

Given Condition:

x=3y - 4

Perimeter = 2(3y - 4) + y

=6y - 8 + y

55 =7y - 8

7y = 55 + 8

7y = 63

y = 63/ 7

y = 9

x = 3y - 4

x = 27 - 4

x = 23

Three sides are 23 cm, 23cm, 9cm