A triangle has sides with lengths of 4 meters, 5 meters, and 8 meters. Is it a right triangle?

If the class was going to get a class pet and 5 picked fish and 7 pick bird and 8 picked rabbits have many students were in the

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36

There are three bags: a (contains 2 white and 4 red balls), b (8 white, 4 red) and c (1 white 3 red). you select one ball at random from each bag, observe that exactly two are white, but forget which ball came from which bag. what is the probability that you selected a white ball from bag a?