The area of a rectangular wall of a barn is 192 square feet. its length is 8 feet longer than twice its width. find the length and width of the wall of the barn.

step-by-step explanation:

the ratio of red paint to blue paint is always 9/7. that means that, whatever x's value, (4x+12)/(4x-4) has that same ratio. so, set up an equation and cross-multiply to solve for x:

9/7 = (4x+12)/(4x-4)

9(4x-4) = 7(4x+12)

36x - 36 = 28x + 84

8x - 36 = 84

8x = 120

x = 15

vertical=18cm horizontal=18cm hypotenuse=25.5

step-by-step explanation:

y= -2x+4, have a great day