Triangle PQR has vertices P(-3, -1), Q(-1, 7), and R(3, 3), and points A and B are midpoints of PQ and RQ, respectively. Use coordinate geometry to prove that AB is parallel to PR, and is half the length of PR.

Which statements regarding the diagram are true? check all that apply.

The annual snowfall in a town has a mean of 38 inches and a standard deviation of 10 inches. last year there were 63 inches of snow. find the number of standard deviations from the mean that is, rounded to two decimal places. 0.44 standard deviations below the mean 2.50 standard deviations below the mean 0.44 standard deviations above the mean 2.50 standard deviations above the mean

Show your workcan a right triangle have this sides? *how to prove it without using the pythagorean theorema*