Collin is making a bulletin board and note center. he is using square cork tiles and square dry-erase tiles. one of every 3 squares will be a cork square. if he uses 12 squares for the center, how many will be cork squares?

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?

The double number line shows of children 1 adult supervise on a field trip

Aquadratic equation has exactly one real number solution . witch is the value of its discriminant ? -1012