A bag contains 10 red marbles, 15 yellow marbles, 5 green marbles, and 20 blue marbles. Two marbles are drawn from the bag.

Which expression represents the probability that one of the marbles is red and the other is blue?

StartFraction 30 P 2 Over 50 P 2 EndFraction
StartFraction 30 C 2 Over 50 C 2 EndFraction
StartFraction (10 C 1) (20 C 1) Over 50 C 2 EndFraction
StartFraction (10 P 1) (20 P 1) Over 50 P 2 EndFraction

Adecibel is a logarithmic unit that can be used to measure the intensity of a sound. the function y = 10logx gives the intensity of a sound in decibels, where x is the ratio of the intensity of the sound to a reference intensity. the reference intensity is generally set at the threshold of hearing. use the graphing utility to graph the decibel function. a whisper has a sound intensity of 30 decibels. use your graph to you complete the following statement. the sound intensity of a whisper is times the reference intensity.

Let u = {q, r, s, t, u, v, w, x, y, z} a = {q, s, u, w, y} b = {q, s, y, z} c = {v, w, x, y, z}. list the elements in the set. a ∩ (b ∪ c)a) {q, s, w, y}b) {q, y, z}c) {q, s, u, w, y, z}d) {q, r, w, y, z}

The graph shows the amount of money noah earned based on the number of lawns he cut. which list shows the dependent quantities in the graph?