Question

The perimeter of a notebook is 42 inches . the notebook is 11 inches tall . how wide is he

Answer 1

10 inches

Explanation:

perimeter = 2(w+L)

42=2(11+w) --> divide both sides by 2

42/2=2/2(11+w)

21=11+w ---> subtract both sides by 11

21-11 = 11 + w-11

10=w