Question 1057240
Let x represent the length of the first side.


The second side is half as long as the first, or x/2.


The third side is 7.25 inches longer than the first, or x + 7.25


The sum of all three sides must be equal to the perimeter, or 79.75 inches. This gives:


x + (x/2) + (x + 7.25) = 79.75


x + 0.5x + x + 7.25 = 79.75


2.5x + 7.25 = 79.75


Subtracting 7.25 from both sides leaves:


2.5x = 72.5


Dividing by 2.5 then gives:


x = 29


From here, you can substitute x = 29 into the expressions for the second and third side to find their lengths.