5. Which equation is useful in solving this problem? Problem: Let p = number of pennies, n= number of nickels arà d= number of dimes.
Cindy has an equal number of dimes, nickels and pennies. If the total value of the coins
is $14.40, how many coins does she have?
A) 1p + 5n + 10d= 14.40
B) p + 5p + 10p = 14.40
C)
10p = 5n=d
D) None of the other choices.

20 da is equal to a. 2,000 cm. b. 2 m. c. 20,000 cm. d. 20,000 mm

0if x and y vary inversely and y=6 as x=7, what is the constant of variation?

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?