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anonymous

  • one year ago

A recipe that makes 9 servings calls for 2 1/4 cups of juice. How many cups of juice are there per serving? A. 4/9 B. 1/9 C. 9/4 D. 1/4

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  1. anonymous
    • one year ago
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    You would have to divide the cups by the number of servings. \[2 \frac{ 1 }{ 4 }\div9\]

  2. anonymous
    • one year ago
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    and how would i divide it?..

  3. anonymous
    • one year ago
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    I'd start with changing 2¼ to an improper fraction. Do you know how to do that?

  4. anonymous
    • one year ago
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    i know how to do it, but i screw up every time.

  5. anonymous
    • one year ago
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    |dw:1441193526843:dw|

  6. anonymous
    • one year ago
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    So you need to do (2 * 4) + 1

  7. anonymous
    • one year ago
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    okay so that answer is 9

  8. anonymous
    • one year ago
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    right, and then we keep the denominator the same, so \[2\frac{ 1 }{ 4 }=\frac{ 9 }{ 4 }\]

  9. anonymous
    • one year ago
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    and the division problem is now \[\frac{ 9 }{ 4 }\div 9\]

  10. anonymous
    • one year ago
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    This is how we divide fractions

  11. anonymous
    • one year ago
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    okay !

  12. anonymous
    • one year ago
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    Keep, change, flip |dw:1441193802105:dw|

  13. anonymous
    • one year ago
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    so we'll have \[\frac{ 9 }{ 4 }\times \frac{ 1 }{ 9 }\]

  14. anonymous
    • one year ago
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    okay..im slowly starting to get this..

  15. anonymous
    • one year ago
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    the 9 on top cancels the 9 on bottom. What will be left?

  16. anonymous
    • one year ago
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    the first fraction and the one

  17. anonymous
    • one year ago
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    yes, so how would you write that as a single fraction?

  18. anonymous
    • one year ago
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    just 9/4, right?

  19. anonymous
    • one year ago
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    remember, the 9s cancel, so they're not there anymore|dw:1441194199700:dw|

  20. anonymous
    • one year ago
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    make sense?

  21. anonymous
    • one year ago
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    oh both of them aren't there? so wouldnt it be 1/4?

  22. anonymous
    • one year ago
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    yes 1/4

  23. anonymous
    • one year ago
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    So my answer is d! thank you so much!

  24. anonymous
    • one year ago
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    you're welcome :)

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