A truckload of cement weighs approximately 3 ^ 9 . The driver of truck weighs 3 ^ 5 pounds . The truckload of cement weighs how many times more than the driver ?

Does the point (1, sqrt 7) lie on circle shown.

Me n o w. i need t h i s. 10 points

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?