Answer:
the length of each side is 68y, where y is some unknown value. We cannot find the length of each side without knowing the value of y.
Explanation:
The perimeter of a regular pentagon is given by the formula:
Perimeter = 5s
where s is the length of each side.
We can rewrite the given expression for the perimeter as:
55x*y + 35x"y - 5xy = 5s
Dividing both sides by 5, we get:
11x*y + 7x"y - xy = s
To find the length of each side when x = 4, we substitute x = 4 into the expression above:
11(4)y + 7(4)y - 4y = s
44y + 28y - 4y = s
68y = s
Therefore, the length of each side is 68y, where y is some unknown value. We cannot find the length of each side without knowing the value of y.