Identify all sums, products, and factors in the expression (x+5)(y+9) +(2+x)(y+23)

Which value of m will create a system of parallel lines with no solution? y = mx - 6 8x - 4y = 12

What is the unit rate of, 75% high fiber chimp food to 25% high protein chimp food.

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?