Astudent answered three questions on a 40-question test incorrectly. what percent did the student answer correctly?

The diameter of a circular chip is doubled to use in a new board game. the area of the new chip will be

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?

What is the value of x in this triangle? a. 53° b. 62° c. 65° d. 118°