The equation 5 radical 2 squared is equals to?

Simplify the expression and find the missing terms. the simplest form of has in the numerator and in the denominator.

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?

What is the area of a triangle with vertices at (-3 3) (-3,2) and (1,2)?