Calculate the area of the regular pentagon below:

a regular pentagon with side length of 22.3 inches and dotted line from center to middle of side of 15.4 inches.
686.84 square inches
732.34 square inches
858.55 square inches
1717.1 square inches

Write an equation for the function that includes the points (1,4/5) and (2,2/3)

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?

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?