Use the formula to determine the value of the indicated variable for the values given. use a calculator when one is needed. v = πr2h; determine h when v =4082, π =3.14, andr equals=10.

In the diagram, gef and hef are congruent. what is the value of x

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?

Which equation represents a direct linear variationa. y=x2b. y=2/5xc. y=1/xd. y=x+3