Doors for the small cabinets are 15.5 inches long. Doors for the large cabinets are 2.5 times as long as the doors for the small cabinets. How many large doors can be cut from a board that is 10 feet long?

What is the answer to |-2x-5|-|-4+8| and x=7

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?

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.