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lexiamee

  • 3 years ago

how to simplify proportions and ratios

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  1. KonradZuse
    • 3 years ago
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    example?????

  2. lexiamee
    • 3 years ago
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    well 25 to 15 would that be 5 to 3

  3. KonradZuse
    • 3 years ago
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    yes correct.

  4. lexiamee
    • 3 years ago
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    thanks... what about 7 over 14x

  5. KonradZuse
    • 3 years ago
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    \[\frac{7}{14x}\]

  6. lexiamee
    • 3 years ago
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    yes

  7. KonradZuse
    • 3 years ago
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    just think about normally trying to break down fractions.

  8. KonradZuse
    • 3 years ago
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    7/14 = ?

  9. KonradZuse
    • 3 years ago
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    We can also plug in for x.

  10. lexiamee
    • 3 years ago
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    2

  11. KonradZuse
    • 3 years ago
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    \[\frac{7}{14 * 2}\]

  12. KonradZuse
    • 3 years ago
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    7/14 isn't 2.

  13. lexiamee
    • 3 years ago
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    1/2

  14. KonradZuse
    • 3 years ago
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    yes, correct. Now what is \[\frac{7}{14 * 2}\]

  15. lexiamee
    • 3 years ago
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    4

  16. lexiamee
    • 3 years ago
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    noooo hold on 1/4

  17. KonradZuse
    • 3 years ago
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    then solve \[\frac{1}{2 * 2}\]

  18. lexiamee
    • 3 years ago
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    so 1/4

  19. KonradZuse
    • 3 years ago
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    just remember if it's a bigger # on the bottom, then the bigger number stays.

  20. KonradZuse
    • 3 years ago
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    there.

  21. KonradZuse
    • 3 years ago
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    also remembe you can plug in any number to solve. As we see by plugging in 2 we get the same answer both ways.

  22. KonradZuse
    • 3 years ago
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    remember also that simplifying techniques are the same all over, just need to know the situations. Ratios, as above can be tricky if you dont' think about it.

  23. lexiamee
    • 3 years ago
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    how would I solve 4xy over 0.25x

  24. KonradZuse
    • 3 years ago
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    are you making this one up?

  25. KonradZuse
    • 3 years ago
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    or is it a legit Q?

  26. lexiamee
    • 3 years ago
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    no it is one of my questions for work.

  27. KonradZuse
    • 3 years ago
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    I guess we woudl just cancel out.

  28. KonradZuse
    • 3 years ago
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    \[\frac{4xy}{0.25x}\] \[\frac{4y}{0.25}\]

  29. KonradZuse
    • 3 years ago
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    always important to see what is in both denom and numerator. Cancelling is HUGE later on in math.

  30. KonradZuse
    • 3 years ago
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    now how many times does 0.25 go into 4?

  31. lexiamee
    • 3 years ago
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    idk

  32. KonradZuse
    • 3 years ago
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    ....... count it out. what's .25 x 2?

  33. lexiamee
    • 3 years ago
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    .25*2= .50

  34. KonradZuse
    • 3 years ago
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    yup, nowhow much is 4?

  35. KonradZuse
    • 3 years ago
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    0.25 x # = 4????

  36. KonradZuse
    • 3 years ago
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    or now that you know 0.5 you could do 0.5 x # = 4? then double it.

  37. lexiamee
    • 3 years ago
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    im lost sorry

  38. KonradZuse
    • 3 years ago
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    okay.... 0.25 x 2 = 0.50 0.25 x # = 4???? (0.25 x 2 = 0.50) x # = 4??

  39. KonradZuse
    • 3 years ago
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    how many times does 0.25 go into 4....

  40. lexiamee
    • 3 years ago
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    nevermind thank you

  41. KonradZuse
    • 3 years ago
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    :) so our final answer is???

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