A bag contains 5 red marbles, 4 blue marbles and 6 green marbles. If three marbles are drawn out the bag, what is the exact probability that all three marbles drawn will be red?

What is the solution to the system of equations? (–2, –8) (–1, –5) (0, –2) (2, 4)

Iq scores for adults age 20 to 34 years are normally distributed according to n(120, 20). in what range does the middle 68% of people in this group score on the test?

Find the perimeter of the triangle with vertices  d(3, 4),  e(8, 7), and  f(5, 9). do not round before calculating the perimeter. after calculating the perimeter, round your answer to the nearest tenth.