Question

X=2

#4a&b
The perimeter of the rectangle below is 42 inches. Write an equation that could be used to
find the value of x. Then, find the dimensions of the rectangle.
5x
Equation:
Dimensions of Rectangle:

Answer 1

Explanation:

the perimeter of a rectangle is

2×length + 2×width

for our rectangle here that means

2×(5x) + 2×(x - 3) = 42

10x + 2x - 6 = 42

12x - 6 = 42

12x = 48

x = 4

length = 5x = 5×4 = 20 in.

width = x - 3 = 4 - 3 = 1 in.