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anonymous

  • 4 years ago

please help me do #12. and please show work if you would so that I can learn it, thanks

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  1. anonymous
    • 4 years ago
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  2. pokemon23
    • 4 years ago
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    I hate these kind of questions

  3. anonymous
    • 4 years ago
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    yes me too.

  4. A_clan
    • 4 years ago
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    First I need to know, What is the value of 1 nickel and 1 dime ?

  5. A_clan
    • 4 years ago
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    Let no. of nickels=n Let no. of dimes=d n-d=4 ....................Eqn(1) (value of 1nickel)*n + (value of 1 dime)*d = $2.45 ..........Eqn(2)

  6. anonymous
    • 4 years ago
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    great, what next?

  7. A_clan
    • 4 years ago
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    Substitute eqn 1 in eqn 2

  8. anonymous
    • 4 years ago
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    Yikes, can you show me what that looks like

  9. A_clan
    • 4 years ago
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    (value of 1nickel)*n + (value of 1 dime)*(n-4)= $2.45

  10. A_clan
    • 4 years ago
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    You will get an eqn in one variable, n

  11. anonymous
    • 4 years ago
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    im sorry im not following, I don't know what to do with all of the information

  12. anonymous
    • 4 years ago
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    what are my equations?

  13. anonymous
    • 4 years ago
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    or what is n and what is d?

  14. A_clan
    • 4 years ago
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    Let no. of nickels=n Let no. of dimes=d

  15. anonymous
    • 4 years ago
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    ok

  16. A_clan
    • 4 years ago
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    Given in problem, n-d=4 ....................Eqn(1)

  17. A_clan
    • 4 years ago
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    Given in problem, The value of all the coins together=$2.45

  18. anonymous
    • 4 years ago
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    right

  19. A_clan
    • 4 years ago
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    Value of all the nickels in bank=(Value of 1 nickel) * n =($0.05)*n Value of all the dimes in bank=(Value of 1 dime) * d =($0.10)*d The value of all the coins=($0.05)*n + ($0.10)*d which is equal to $2.45

  20. A_clan
    • 4 years ago
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    So, the second equation ($0.05)*n + ($0.10)*d=$2.45 .................eqn(2)

  21. anonymous
    • 4 years ago
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    so how many nickels and dimes? once you show me this part i will understand how to do the whole problem

  22. anonymous
    • 4 years ago
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    please show me the two equations working together

  23. anonymous
    • 4 years ago
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    isn't it four more nickels than dimes, isn't that d+4=2.45

  24. anonymous
    • 4 years ago
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    i mean d + n=4 ?

  25. anonymous
    • 4 years ago
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    i don't know

  26. anonymous
    • 4 years ago
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    Let the no. of nickels be x. Let the no. of dimes be y. four more nickels than dimes mean no of dimes(y)+4=no of nickels(x) Cn u just tel me the value of 1 nickel and dime?

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