A fair coin is tossed 80 times in an experiment. If the coin is fair, what would be a reasonable number of times tails should appear, based on your knowledge of the theoretical probability of this event? (Show your work!) a. 25 to 39 times
b. 33 to 47 times
c. 15 to 65 times
d. 42 to 58 times

△cde maps to △stu with the transformations (x, y) arrowright (x − 2, y − 2) arrowright (3x, 3y) arrowright (x, −y). if cd = a + 1, de = 2a − 1, st = 2b + 3 and tu = b + 6, find the values of a and b. the value of a is and the value of b is .

The number if marbles of different colors stored in a hat is listed below: 4 red marbles 10 green marbles 7 blue marbles. without looking in the hat, dan takes out a marble at random. he replaces the marble and then takes out another marble from the hat. what is the probability that dan takes out a blue marble in both draws?

Consider the function f(x)=-5x+3 what is f(-2)