Post ? in a coment then ill answer
Hi so remember the perimeter of a square is 4 times the side. so if the perimeter is 36 then you can divide 36 by 4 to get the answer 9.
36=4^x
36=4x
36/4=x
9=x
to cross check if ever unsure times the (side) by 4 if it matches the given perimeter.
Answer:

Step-by-step explanation:
Hello, please consider the following.
We have two equations:
(1) -2x - 4y = 20
(2) -3x + 5y = -25
5*(1)+4*(2) gives
-10x - 20y -12x + 20y = 100 - 100 = 0
-22x = 0
x = 0
I replace in (1)
-4y = 20
y = -20/4 = -5
There is one solution x = 0, y = -5
Hope this helps.
Do not hesitate if you need further explanation.
Thank you
This is a list of all the prime numbers less than 20 in numerical order
Answer:
A pair of vertically opposite angles are always equal to each other.