To the nearest tenth, what is the area of a circle whose radius is 2.2 feet? use 3.14 for π . enter your answer in the box. ft2

Is δ pmr similar to δ smn ? if so, which postulate or theorem proves these two triangles are similar?

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.