Maria and franco are mixing sports drinks for a track meet. maria uses 2/3 cup of powdered mix for every 2 gallons of water. franco uses 1 1/4 cups of powdered mix for every 5 gallons of water

Idon’t understand this.. will someone ? will mark brainliest along with 20 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?

What are two numbers that add up to -9 and multiply to -10 best answer gets branliest and 100 extra points