Question

Two equal sides of a triangle are each 5 metres less than twice the third side .If the perimeter of the triangle is 55 metres, find the lengths of its sides

Answer 1

Let the length of equal sides be X
and the third side be Y
From given data:
X + 5 = 2Y. equation 1
X = 2Y - 5

Also given that perimeter is 55
Thus
X + X + Y = 55
2X + Y = 55 equation 2
solving equation 1 and 2
Putting value of X = 2Y - 5 in equation 2
2 ( 2Y - 5) + Y = 55
4Y - 10 + Y = 55
5Y = 65
Therefore Y = 13m
For X :
X+5 = 2 Y
X = 2Y - 5
X = 2( 13 ) - 5 = 26 - 5 = 21m
Therefore X = 21m and Y = 13 m
Cross Verification : X + X + Y = 21 + 21 + 13 = 55 hence verified

Answer 2

from brainly only I had got the answer
........
thank u