The answer is negative three halves minus one fifth
2* 100 + 2 * 65 = 330 perimeter
100 * 65 = 6,500 area
2*90 + 2*75 = 330 perimeter
90 * 75 = 6,750 area
If the 2 given points are endpoints, then we're in business. The formula for the midpoint is

. If the endpoints of our segment are the coordinates (1,2) and (12,14), our formula would be filled in as follows:

which simplifies to (13/2, 8). See? It's pretty simple once you know how to do it.
Answer: -3
Step-by-step explanation: