The sum of two numbers is 48 and the difference is 4. what are the numbers?

Find the missing part. use an improper fraction for your answer.

The width of a rectangle is 20 units. can the perimeter p of the rectangle be 64 units when its length x is 11 units? no, because p = 2x + 2(20) no, because p ≠ 2x + 2(20) yes, because p ≠ 2x + 2(20) yes, because p = 2x + 2(20)

How can constraints be used to model a real-world situation?