Acollege algebra class of 38 students was made up of people who were 18,19 and 20 years of age. the average of their ages was 18.5 years. how many of each age were in the class if the number of 18 year olds was 8 more than the combined 19 and 20 years old?

For the equations below which statement is true ? -2x=14 6x=-42

Abag contains 3 red marbles, 2 blue marbles, and 2 green marbles. one marble is picked, then another marble. assume that the selections are made with replacement. a) find the probability of picking two red marbles with replacement. b) find the probability of picking a red marble and a blue marble. assume the selections are made without replacement. c) find the probability of picking two red marbles without replacement. d) find the probability of picking a red marble and a blue marble without replacement.

Use the given information to determine the exact trigonometric value.