Suppose you choose a marble from a bag containing 5 red marbles, 4 white marbles, and 5 blue marbles. you return the first marble to the bag and then choose again.

Aright triangle includes one angle that measures 30º. what is the measure of the third angle? a. 30º b. 90º c. 60º d. 130º

Awoman has 14 different shirts: 10 white shirts and 4 red shirts. if she randomly chooses 2 shirts to take with her on vacation, then what is the probability that she will choose two white shirts? show your answer in fraction and percent, round to the nearest whole percent.

What is the value of n in the equation -1/2(2n+4)+6=-9+4(2n+1)