Arectangle has a width represented by x and length represented by 4x. it the area of the rectangle is 80, find the value of x

Area = length * width = 4x * x = 4x^2.

4x^2 = 80
x^2 = 80/4 = 20

x = sqrt 20

Answer is 4.47 to nearest hundredth.

It's like discovering the answer to a puzzle. the purpose in solving an equation is to find the value or values of the variable that makes it a true statement. any value of the variable that makes the equation true is called a solution to the equation.