Question

f a rectangle has a perimeter of 70, a length of x and a width of x - 9, find the value of the length of the rectangle.

Answer 1

`( x + (x - 9)) * 2 = 70 \\( 2x - 9) *2= 70 \\ 4x - 18 = 70 \\ 4x = 70 + 18 = 88`

`x = (88)/(4) = 22`
the length is 22


and the width is
22-9=17





good luck