Answer:
X= 16
Perimeter is 160 meters
Step-by-step explanation:
5(x-12)
5x-60 (Distributive property
Then add the x+4 to the equation
5x-60=x+4
Subtract X from both sides
4x-60=4
Add 60 to both sides
4x=64
Divide both sides by 4 so that you can get X by itself
X=16
Now plug in 16 for x in one of the original equations
(16) + 4 = 20
Each side equals 20 units
Now multiply that number by the number of sides
20 * 8 = 160 meters
