Math

posted by Cecylia

Two coins are taken at random (without replacement) from a bag containing 7 nickels, 5 dimes, and 6 quarters. Let X denote the random variable given by the total value of the two coins. Find E(X). (Round your answer to four decimal places.)

Respond to this Question

First Name

Your Answer

Similar Questions

  1. math

    Jo has 37 coins (all nickels, dimes and quarters) worth $5.50. She has 4 more quarters than nickels. How many of each type of coins does she have?
  2. Math

    Cindy had $1.08 using 9 coins. She had as many pennies as dimes. ___ Danielle had 96 coins, using ten coins. She had the same number of nickels as all the other coins put together. __ The coin choices are. Half Dollar, Quarters, Dimes, …
  3. Math

    Two coins are taken at random (without replacement) from a bag containing 4 nickels, 8 dimes, and 3 quarters. Let X denote the random variable given by the total value of the two coins. Find E(X). (Round your answer to four decimal …
  4. algebra

    Please help....struggling with word problems and please explain how to get the answer.... Max has a collection of 210 coins consisting of nickels, dimes, and quarters. He has twice as many dimes as nickels, and 10 more quarters than …
  5. Math

    Assume that you select 2 coins at random from 5 coins: 3 dimes and 2 quarters. What is the probability that all of the coins selected are dimes?
  6. math

    A jar contains 8 pennies, 3 nickels and 4 dimes. A child selects 2 coins at random without replacement from the jar. Let X represent the amount in cents of the selected coins. Find the expected value of X.
  7. math

    When a child breaks open her piggy bank, she finds a total of 76 coins, consisting of nickels, dimes, and quarters. The total value of the coins is $9. If the nickels were dimes, and the dimes were nickels, the value of the coins would …
  8. Intermediate algebra

    A collection of nickels dimes and quarters consists of 50 coins with a total of $5.50. If there are two times as many dimes as quarters find the number of each type of coins?
  9. Algebra

    Your friend claims that she has a bag of 30 coins containing nickels, dimes, and quarters. The total value of the 30 coins is $3. There are twice as many nickels as there are dimes. Is your friend correct?
  10. algebra

    A collection of thirty-seven coins consists of nickels, dimes and quarters. There are ten more dimes than nickels. Represent the value of all the coins using one variable.

More Similar Questions