A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

ra has 28¢ in his pocket. He has 20 coins that are either pennies or nickels. How many nickels does Ira have? Explain and show your work. *

  • This Question is Closed
  1. welshfella
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    how many cents are there in a nickel and a penny.? (i'm from the UK)

  2. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    a penny is one cent and a nickle is 10 cents

  3. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    oops nicke is 5 cents

  4. welshfella
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    ok so if there are x pennies and y nickels then we have the equation x + 10y = 28

  5. welshfella
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    x + 5y = 28

  6. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    thank you

  7. welshfella
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    now we have to fit while numbers to that equation

  8. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    okay

  9. welshfella
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    oh also he has 20 coins so that is x + y = 20 so we need to solve the system x + y = 20 x + 5y = 28

  10. welshfella
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    now if we subtract equation 1 from equation 2 the x will disappear and w'ell get 4y = 8

  11. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so first i would multiply then add right?

  12. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    okay

  13. welshfella
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    you have 4 times the number of nickels = 8 so divide by 4

  14. welshfella
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1442248219603:dw|

  15. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    okay one min

  16. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    4 X 2 = 8

  17. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    y = 2

  18. welshfella
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    no its 8 divided by 4

  19. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    2

  20. welshfella
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yes

  21. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ok so 8 divided by 4 =2

  22. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    thats the answer right?

  23. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.