Liliana has a bag of marbles. the bag contains 18 black, 15 red, 11 blue, and 8 white marbles. liliana randomly takes a red marble from the bag and leaves the marble on a table. what is the probability that she will next take a red or a white marble from the bag?

Abox contains 1 plain pencil and 4 pens. a second box contains 5 color pencils and 5 crayons. one item from each box is chosen at random. what is the probability that a plain pencil from the first box and a color pencil from the second box are selected? write your answer as a fraction in simplest form.

Simplify the expression 10/11(22z) + (a+5) -1

Type the correct answer in each box, round your answers to the nearest integer 20 25 30 in the figure, the perimeter of hexagon abcdef is approximately w units, and its area is square units