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muscrat123

  • one year ago

i have a word problem on systems of equations that i am completely lost on. my teacher says i have the right setup, i just need to eliminate a variable, which i know how to do, but im stuck on this question. HELP!!!!!!!!! Will MEDAL AND FAN will post question once i have help Molly's Custom Kitchen Supplies sells homemade forks and spoons. It costs the store $1.70 to buy the supplies to make a fork and $1.30 to buy the supplies to make a spoon. The store sells forks for $5.60 and spoons for 5.40. Last April Molly's Custom Kitchen Supplies spent $37.90 on materials for forks and spoons. They sold the finished products for a total of $147.20. How many forks and how many spoons did they make last April?

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  1. imqwerty
    • one year ago
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    ok :)

  2. imqwerty
    • one year ago
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    kay :)

  3. imqwerty
    • one year ago
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    yea m jst helpin some other ppl too :) i'll come back as soon as i get notification :)

  4. imqwerty
    • one year ago
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    (:

  5. muscrat123
    • one year ago
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    mmk. what i have so far is this: 1.70f + 1.30s = $37.90 5.60f + 5.40 = 147.20 my teacher says this is correct, i just need to evaluate now, and im stuck @imqwerty

  6. muscrat123
    • one year ago
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    @imqwerty

  7. muscrat123
    • one year ago
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    k im back

  8. imqwerty
    • one year ago
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    ok there is a typo that shuld be 5.40s

  9. muscrat123
    • one year ago
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    yeaa sorry i was in a rush but yea thats wat its supposed to say

  10. imqwerty
    • one year ago
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    np :)

  11. imqwerty
    • one year ago
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    1.70f + 1.30s = $37.90 1.7f=37.9-1.3s f=(37.9-1.3s)/1.7 substitute this value of f in the second equation and u'll get the value of s then put the value of s in any of these equations to get the value of f

  12. muscrat123
    • one year ago
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    idunderstand @imqwerty

  13. imqwerty
    • one year ago
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    did u get how we took out the value of f in terms of s ?

  14. muscrat123
    • one year ago
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    no do u know algebra nation?

  15. imqwerty
    • one year ago
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    no

  16. muscrat123
    • one year ago
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    whelp...we use the elimination method, elimination multiple, and the substitution method to solve this. we havent learned that way

  17. imqwerty
    • one year ago
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    ok lets do it that way

  18. muscrat123
    • one year ago
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    YAY!

  19. muscrat123
    • one year ago
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    do u know how?

  20. muscrat123
    • one year ago
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    ?

  21. imqwerty
    • one year ago
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    1.70f + 1.30s = $37.90 multiply this equation by 5.6/1.7 u get- (5.6/1.7)1.7f+(5.6/1.7)1.3s=(5.6/1.7)37.9 5.6f+(5.6/1.7)1.3s=(5.6/1.7)37.9 now subtract this equation from the second equation to eliminate 5.6f :) and then u'll be left with an equation with s.. can u solve it now?

  22. muscrat123
    • one year ago
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    ?

  23. muscrat123
    • one year ago
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    imust seem really stupid, i know how to do this, just not for this problem sorry

  24. imqwerty
    • one year ago
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    don wrry :)

  25. muscrat123
    • one year ago
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    can u still help me?

  26. imqwerty
    • one year ago
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    yea ofc

  27. muscrat123
    • one year ago
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    kay thx

  28. imqwerty
    • one year ago
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    so we have this- 5.6f+(5.6/1.7)1.3s=(5.6/1.7)37.9 equation1 and we got another equation-5.60f + 5.40s = 147.20 equation 2 subtracting equation 1 frm 2 u get- 5.60f + 5.40s - [5.6f+(5.6/1.7)1.3s] =147.20 -(5.6/1.7)37.9 5.60f + 5.40s - 5.6f - (5.6/1.7)1.3s = 147.20 -(5.6/1.7)37.9 5.4s-(5.6/1.7)1.3s =147.2 -(5.6/1.7)37.9 can u solve this equation to get s if ur stuck then don hesitate to ask :P :)

  29. muscrat123
    • one year ago
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    why are u dividing?

  30. imqwerty
    • one year ago
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    u mean that 5.6/1.7?

  31. muscrat123
    • one year ago
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    yea

  32. imqwerty
    • one year ago
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    well we wanted to finish off the 5.6 f in the second equation by we had a 1.7f in the 1st equation so to make it 5.6f we multiplied the whole equation by 5.6/1.7 :)

  33. muscrat123
    • one year ago
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    i dont understand

  34. muscrat123
    • one year ago
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    i dont hae time, i got a TON of hw

  35. muscrat123
    • one year ago
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    i guess ill just leave it blank, i have no idea what ur saying

  36. muscrat123
    • one year ago
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    @Hero

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