Answer:
Step-by-step explanation:
hey watch it fatty
Assuming that x = width
the length would be = x+20
x (x+20) = 500
X^2 +20x - 500 = 0
Based on the equation above, you can find the x which will became the width and then added that width with 20 and you find the length
hope this helps
It is the same thing as the average you add everything up then you divide by the number of numbers you added together