Which equation correctly represents the perimeter of the rectangle?

Responses

2(x+1)=2x+2

2(x+2)=2x+4

2(2x+3)=4x+3

2(2x + 3) = 4x + 6

1 answer

To find the correct equation that represents the perimeter of a rectangle, we use the formula for the perimeter \( P \) of a rectangle, which is:

\[ P = 2(\text{length} + \text{width}) \]

Let's assume the length of the rectangle is represented by \( x + 1 \) and the width by \( x + 2 \). The perimeter would then be:

\[ P = 2((x + 1) + (x + 2)) = 2(2x + 3) \]

Now, let's compare that with the options provided:

  1. \(2(x+1) = 2x + 2\): This is not the perimeter of the rectangle.
  2. \(2(x+2) = 2x + 4\): This is not the perimeter of the rectangle.
  3. \(2(2x + 3) = 4x + 3\): This is not correct because \( 2(2x + 3) = 4x + 6\).
  4. \(2(2x + 3) = 4x + 6\): This equation correctly represents the perimeter \( P = 2(2x + 3) \).

Thus, the correct equation that represents the perimeter of the rectangle is:

\[ 2(2x + 3) = 4x + 6 \]