142k views
0 votes
The perimeter is 86 feet. The length, L, is 2 feet less than two times its width, W. What is the length and the width?

A) L = 42 feet, W = 44 feet
B) L = 44 feet, W = 42 feet
C) L = 40 feet, W = 43 feet
D) L = 43 feet, W = 40 feet

User Panagdu
by
6.8k points

1 Answer

0 votes

Final answer:

To find the length and width of the rectangle, we can set up a system of equations using the given information. By solving the system of equations, we find that the length is 28 feet and the width is 15 feet.

Step-by-step explanation:

To find the length and width, we can set up a system of equations using the given information. Let L represent the length and W represent the width.

The perimeter of a rectangle is given by the formula P = 2L + 2W. We are given that the perimeter is 86 feet, so we can write the equation 86 = 2L + 2W.

We are also given that the length, L, is 2 feet less than two times its width, W. This can be written as L = 2W - 2.

Now we can solve the system of equations by substituting L = 2W - 2 into the equation 86 = 2L + 2W:

86 = 2(2W - 2) + 2W

86 = 4W - 4 + 2W

86 = 6W - 4

90 = 6W

W = 15

Substituting W = 15 into the equation L = 2W - 2:

L = 2(15) - 2

L = 30 - 2

L = 28

So the length is 28 feet and the width is 15 feet. Therefore, the correct answer is D) L = 28 feet, W = 15 feet.

User Jukebox
by
8.3k points