We are given

Firstly, we simplify left side
Left side is

we will make all x terms together
and y terms together



we can multiply left side by using exponent rule



now, we can set them equal

Since, both sides have x,y and 8
and both are equal
so, their exponent must be equal
so, exponent of y must also be equal
we get

................Answer
Answer: 9
Step-by-step explanation: pentagon has 5 sides so divide 45 by 5
Step-by-step explanation:
We get two equations here. One for the area and one for the perimeter. The area gives us x×y=50. The perimeter, if we have a rectangle, x+y+x+y=30=2x+2y. For this to work we need to make a simple expression for x or y. Let's go with x here. 2x+2y=30 so x=15-y. if we fill that in the other equation we get (15-y)×y=50 (see picture). y=5 or y=10. If we fill in x×5=50 we get x=10 and vice versa. So the dimensions are 5 centimeters by 10 centimeters
The answer i x=4/99 (fraction form )