¿Cuáles son las coordenadas de la proyección del punto C (3,-4) sobre el eje x? A) (0,-4)
B) (0,4)
C) (-4,0)
D) (3,0)

If y varies directly as x2 and y=6 when x=6, find the constant of variation.

Answer! if you don’t mind, can you explain

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?