what is the length of a rectangle

AC=2(x-3)
BD=(x+5)?

if AC and BD are diagonals, they are equal in a rectangle

2x-6 = x+5
x = 11

So, we have a rectangle with diagonal 11. Unfortunately, that's not enough. It could be anything from a square of side √11 to a long thin rectangle with length almost 11.

To find the length of a rectangle, we need more information about its dimensions. The given variables AC and BD seem to be the lengths of two sides of the rectangle.

AC is represented as 2(x-3), and BD is represented as (x+5). However, we cannot determine the exact length of the rectangle with just this information. We need one more piece of information, such as the relationship between AC and BD, or the values of x or the angles of the rectangle.

If you have additional information, please provide it so that I can help you find the length of the rectangle.