Urn 1 contains 4 white and 3 black marbles and urn 2 contains 8 white and 10 black. two marbles are randomly selected form urn 1 and placed into urn 2. if 3 marbles are then randomly selected from urn 2, what is the expected number of white marbles drawn?

If there are 12 moths and some have 31 days and others have 30 days how many have 28 days?

Find the greatest common factor of -30x 4 yz 3 and 75x 4 z 2.

When the solutions to each of the two equations below are graphed in the xy-coordinate plane, the graphs of the solutions intersect at two places. write the y-cordninates of the points of intersection in the boxes below in order from smallest to largest. y=2x y=x^2-3