Darcy and leah are looking at some fabric selections in a store. all of the selections are marked the same price, and the amount, in yards, of each fabric is written as an improper fraction. which amount is the greatest? a. 43⁄5 b. 33⁄4 c. 78⁄9 d. 22⁄3

Astick 2 m long is placed vertically at point b. the top of the stick is in line with the top of a tree as seen from point a, which is 3 m from the stick and 30 m from the tree. how tall is the tree?

Write the expression 7x^3-28xy^2 as the product of 3 factors

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?