A piece of wire of length 280 mm is bent
to form a rectangle with area 4800 mm2.
One side of the rectangle has length x
mm. Calculate the possible values of x.

What is the exact volume of the cylinder (radius 13 in., height 30 in.)

What is the simplified expression for 6(2(y+x))

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?