The parallelogram shown represents a map of the
boundaries of a natural preserve. walking trails run from
points a to c and from points b to d. the measurements
shown represent miles.
3y - 4
е.
2y - 3
what is the sum of the lengths of the two trails?
6 miles
12 miles
16 miles
36 miles

In a test for esp (extrasensory perception), a subject is told that cards only the experimenter can see contain either a star, a circle, a wave, or a square. as the experimenter looks at each of 20 cards in turn, the subject names the shape on the card. a subject who is just guessing has probability 0.25 of guessing correctly on each card. a. the count of correct guesses in 20 cards has a binomial distribution. what are n and p? b. what is the mean number of correct guesses in 20 cards for subjects who are just guessing? c. what is the probability of exactly 5 correct guesses in 20 cards if a subject is just guessing?