Below are grades in a course and how many students earned each grade:
5 students earned an a,
8 students earned a b,
10 students earned a c,
3 students earned a d
and 2 students earned a f.

what percent passed the course with a c or better? (round your answer to one decimal place.)

Find the balance at the end of 4 years if 1000 is deposited at the rate of

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?

Hurry the figure shows the front side of a metal desk in the shape of a trapezoid.what is the area of this trapezoid? 10 ft²16 ft²32 ft²61 ft²