Respuesta :

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

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