Find the volume of the prism. Round to the nearest tenth if necessary

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.

What are the coordinates of the point that is 1/3 of the way from a to b? a (2,-3) b (2,6)

Use sigma notation to represent the following series for 9 terms.