A triangular sign in a store has a perimeter of 5.5'. To of the sides of the triangle are the same length while a 3rd Side is 1' longer than those sites. Find out lengths of the sides of the sign

1.5' and 1.5' and 2.5' are the sides measurement

So the perimeter is equal to the sum of all the sides.

Let's call X the length of side one and side 2, and side 3 is equal to x+1.

So,

P = S1 + S2 + S3

5.5 = X + X + (X+1)

5.5 = 3x+1

4.5 = 3x

1.5 = x

So, the sides' lengths are 1.5, 1.5, and 2.5