Do these three segments make a right triangle? 14cm, 23cm, and 25cm

The sum of two numbers is 12 and their difference is 18 what are the two numbers

The diagonals of a quadrilaretral intersect at (-1,4). one of the sides of the quadrilateral is bounded by (2,7) and (-3,5) determine the coordinates of the other side in order for the quadrilaretral to be a square.

Solve for n? [tex]z = \frac{3}{4} mn[/tex]