Segments PX and QY are altitudes of acute triangle PQR, and Z is the midpoint of segment PQ. Prove that triangle XYZ is isosceles. (Please provide a diagram in addition to the actual proof)

The probability that a student graduating from suburban state university has student loans to pay off after graduation is .60. if two students are randomly selected from this university, what is the probability that neither of them has student loans to pay off after graduation?

Can some one explain this i got sent this. is this a threat i’m scared

Find the volume of the solid bounded by the plane z=0 and the paraboloid z=1-x^2 –y^2