The diagonals of quadrilateral QRST intersect at P(0,3) has vertices at Q(1,6) and R(-4,5). What must be the coordinates of S and T to ensure that QRST is a parallelogram? I've asked this twice and honestly don't know if I've gotten an answer or not.

The given dot plot represents the average daily temperatures, in degrees fahrenheit, recorded in a town during the first 15 days of september. if the dot plot is converted to a box plot, the first quartile would be drawn at __ , and the third quartile would be drawn at __ link to graph: .

Standard deviation of 19,29,21,22,23

Ineed to know the answer to this algebra question.