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careless850

  • 3 years ago

Your piggy bank has a total of 41 coins in it; some are dimes and some are nickels. If you have a total of $3.45, how many nickels do you have?

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  1. Hero
    • 3 years ago
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    n + d = 41 .05n + .10d = 3.45 solve the system

  2. careless850
    • 3 years ago
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    What system?

  3. careless850
    • 3 years ago
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    5?

  4. Hero
    • 3 years ago
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    Ever heard of systems of equations?

  5. careless850
    • 3 years ago
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    I believe.

  6. careless850
    • 3 years ago
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    Forgot though.

  7. careless850
    • 3 years ago
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    I forget things easily.

  8. Hero
    • 3 years ago
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    I'm sorry to hear that.

  9. careless850
    • 3 years ago
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    Why's that?

  10. vparikh
    • 3 years ago
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    You need that to solve the problem...

  11. careless850
    • 3 years ago
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    I don't know how to solve it!

  12. vparikh
    • 3 years ago
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    Use the system of equations, solve for each variable.

  13. careless850
    • 3 years ago
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    Could you explain how to use them?

  14. Hero
    • 3 years ago
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    There are different ways to solve systems of equations.

  15. vparikh
    • 3 years ago
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    Take a look at this: http://www.purplemath.com/modules/systlin5.htm

  16. careless850
    • 3 years ago
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    I have 3 nickels.

  17. careless850
    • 3 years ago
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    No, 5 nickels.

  18. careless850
    • 3 years ago
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    Right, vparikh

  19. careless850
    • 3 years ago
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    ?

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