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anonymous

  • one year ago

Can someone help me figure this out? I thought the average might be percent wise but when I did the problem I got lost.. http://prntscr.com/7e99e0

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  1. anonymous
    • one year ago
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    @divu.mkr

  2. anonymous
    • one year ago
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    @Learner11

  3. anonymous
    • one year ago
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    idk sorry

  4. anonymous
    • one year ago
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    bating average is something like how many average hit you will make of each throw like as if you were thrown of 4 ball and you were able to hit only one then you bating average will be 0.25 you have just multiply the batting average to the total number of ball to get successful hits

  5. anonymous
    • one year ago
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    ooh

  6. anonymous
    • one year ago
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    could you explain to me how to set it up?

  7. anonymous
    • one year ago
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    @Learner11

  8. phi
    • one year ago
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    The idea is to "interpret" this line: batting average is a ratio of hits to times at bat we can write a ratio as a fraction \[ batting\ avg = \frac{hits}{times\ at\ bat} \]

  9. phi
    • one year ago
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    Once you get that idea, you read the problem for info. Do we know the batting average (as a number) ? do we know the number of hits or the times at bat? any ideas?

  10. anonymous
    • one year ago
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    So I turn the a verage into a fraction and then do proportion?

  11. phi
    • one year ago
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    you see the "equation" I posted ? replace the "words" with numbers (as much as you can, from reading the problem) can you do that ?

  12. anonymous
    • one year ago
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    Yeah

  13. phi
    • one year ago
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    what do you get ?

  14. anonymous
    • one year ago
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    .320 = x/25 ?

  15. phi
    • one year ago
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    yes. now we need to find "x" (i.e. number of hits) to "solve for x" the trick is to multiply both sides by 25, like this \[ 0.320 \cdot 25 = \frac{x}{25} \cdot 25 \]

  16. anonymous
    • one year ago
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    x=8

  17. phi
    • one year ago
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    on the right side the 25/25 is 1 (cancels out)

  18. phi
    • one year ago
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    yes, number of hits is expected to be 8

  19. anonymous
    • one year ago
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    Would it also work if I turned .320 into a fraction and crossed multiplied?

  20. anonymous
    • one year ago
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    with x/25

  21. phi
    • one year ago
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    yes, you can cross multiply. you could write 0.320 as 0.320/1 or 320/1000 or 32/100 I remember liking cross multiplying (easy to remember), but it's faster to do it the way I showed (and the way you will learn to solve equations if you take more math classes)

  22. anonymous
    • one year ago
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    Oh I see :3 I just asked because that's what I was being taught at the moment. But I understand now ^.^

  23. anonymous
    • one year ago
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    Thank you so much c:

  24. phi
    • one year ago
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    yw

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