If an area of a rectangle with width x can be represented with the expression A (x) = x (14-x), what is the perimeter of the rectangle?

A.) 28

B.) 56

C.) 56-4x

D.) 4x+28

Question

Mathematics

Beckham Goodman

17 January, 07:03

If an area of a rectangle with width x can be represented with the expression A (x) = x (14-x), what is the perimeter of the rectangle?

A.) 28

B.) 56

C.) 56-4x

D.) 4x+28

+5

Answers (1)

Know the Answer?

Vanessa Frey · Answer 1

To solve for the perimeter first figure out the length and width from the formula of area for the rectangle

A = LxW

A = (14-X) •X

L = (14-X)

W = X

P = 2L + 2W

P = 2 (14-X) + 2 (X)

P = 28 - 2X + 2X

P = 28.

The perimeter of the rectangle is A. 28.

If an area of a rectangle with width x can be represented with the expression A (x) = x (14-x), what is the perimeter of the rectangle?A.) 28B.) 56C.) 56-4xD.) 4x+28

If an area of a rectangle with width x can be represented with the expression A (x) = x (14-x), what is the perimeter of the rectangle?

A.) 28

B.) 56

C.) 56-4x

D.) 4x+28