While walking outside on a field trip 75%, or 15, of the students in the class wore jackets. Find the number of students in the entire class.

Measures of the angle of r, 31 s (x+4) t (3x+9)

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)

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.