Question

A rectangle has a length of x+4 centimeters and a width of x centimeters. The perimeter of the rectangle is 28 centimeters. What is the value of x?

Answer 1

Perimeter = 2(length) + 2(width)
so plug in (length) = x+4
and (width) = x
and P = 28
so 28 = 2(x+4) + 2(x) do you know how to solve for x from there? :)

Answer 2

no

Answer 3

well you would first distribute the 2
so 28 = 2(x+4) + 2(x)
becomes 28 = 2x + 8 + 2x

then add like terms (2x+2x) = 4x
so 28 = 4x + 8
subtract 8 from both sides
then divide both sides by 4

Answer 4

5

Answer 5

correct :)