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kmullis6

  • one year ago

HELP! I'll fan and give a medal

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  1. misty1212
    • one year ago
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    HI!!

  2. misty1212
    • one year ago
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    this is like the tenth time i have seen this question, maybe i should make a template for it

  3. misty1212
    • one year ago
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    first off it says "Write an equation in one variable " and your equation has two , so lets start again

  4. kmullis6
    • one year ago
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    Ok, other than that, am I on the right track?

  5. misty1212
    • one year ago
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    secondly it has "find the total number of liters of apple juice and water in the jar. " which is stupid because you know the number of liters of water right?

  6. kmullis6
    • one year ago
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    Yea, 1 right? And there's 3 of juice?

  7. misty1212
    • one year ago
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    yeah so it is easy enough to solve in your head one liter of water, 3 liters of juice makes 75% juice but i guess you still have to come up with an equation that they like

  8. misty1212
    • one year ago
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    lets see if we can do that, even though it is not necessary to write an equation to solve this rather simple question

  9. misty1212
    • one year ago
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    we can call the number of liters of juice \(j\) if you like, since that is what you have to find

  10. misty1212
    • one year ago
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    that means \[j+1\] is the total amount right?

  11. kmullis6
    • one year ago
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    Yea

  12. misty1212
    • one year ago
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    and since it has to be \(75\%\) juice we also know \(j\) must equal it must be \(.75(J+1)\)

  13. misty1212
    • one year ago
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    set \[j=.75(j+1)\] and solve for \(j\)

  14. kmullis6
    • one year ago
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    3

  15. misty1212
    • one year ago
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    you will get \(j=3\) when you solve that, just like you knew at the beginning without resorting to this rather silly equation

  16. misty1212
    • one year ago
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    yeah you got it

  17. kmullis6
    • one year ago
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    Oh ok. So that's the equation?

  18. misty1212
    • one year ago
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    that is one you can use, yes and it does only have one variable

  19. kmullis6
    • one year ago
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    j=.75(j+1)=3

  20. misty1212
    • one year ago
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    oh no, not = 3

  21. misty1212
    • one year ago
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    solve \[j=0.75(j+1)\] and you will get \(j=3\) as the solution

  22. kmullis6
    • one year ago
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    Ohh ok. Makes sense.

  23. misty1212
    • one year ago
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    good!

  24. kmullis6
    • one year ago
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    And just to make sure this would be part B? j = .75(j + 1) j = .75j + .75 j - .75j =.75 0.25j = .75 j = 3

  25. kmullis6
    • one year ago
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    @misty1212

  26. anonymous
    • one year ago
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    yes

  27. kmullis6
    • one year ago
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    Thank you! @satellite73

  28. anonymous
    • one year ago
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    yw

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