Branliest gets 98 points!
angle abc has point e on ray ba and point d on ray bc. points e and d are equidistant from point b. to copy angle abc, which of the following needs to be identified for the construction?
the distance between points e and d
the point in the angle that is equidistant from points e and d
the endpoint of rays ba and bc
the point outside of the angle that is equidistant from points e and da

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?