a rectangle has a width that is 1/2 its length the perimeter of this rectangle is 42 inches what is the width of the rectangle...what is the width of the rectangle

Respuesta :

Answer:

w = 7 inches

Step-by-step explanation:

length = n

width = n/2

Perimeter = 2n + 2(n/2)

42 = 2n + n

42 = 3n

n = 14

width = 14/2 = 7