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anonymous

  • one year ago

Please check my answer Triangle ABC has been dilated to form triangle AꞌBꞌCꞌ.What is the scale factor?

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  1. anonymous
    • one year ago
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    i think it is 2/5 once simplified

  2. anonymous
    • one year ago
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    @igreen

  3. anonymous
    • one year ago
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    @radar

  4. anonymous
    • one year ago
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    @Kainui

  5. anonymous
    • one year ago
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    @TheSmartOne

  6. anonymous
    • one year ago
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    @ganeshie8

  7. ganeshie8
    • one year ago
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    simply take the ratio of sides of image and preimage : \[\large \dfrac{7.5}{3}\]

  8. anonymous
    • one year ago
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    yes , I did and simplified I got 2/5

  9. anonymous
    • one year ago
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    I did the 7.5/3...3/7.5...becomes 2/5

  10. ganeshie8
    • one year ago
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    you did it in reverse

  11. ganeshie8
    • one year ago
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    7.5/3 should be 5/2

  12. ganeshie8
    • one year ago
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    \[\large \dfrac{7.5}{3} = \dfrac{75}{30} = \dfrac{5}{2}\]

  13. anonymous
    • one year ago
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    I did it like this one... Pre-image ABCD was dilated to produce image AꞌBꞌCꞌDꞌ. What is the scale factor of the similar figures? Enter the answer in simplest form. Two quadrilaterals labeled A B C D and A-prime, B-prime, C-prime, D-prime. Quadrilateral A B C D is larger than the other quadrilateral, which is to the right of quadrilateral A B C D. Side B C is labeled twelve, and side B-prime, C-prime is labeled nine.

  14. anonymous
    • one year ago
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  15. anonymous
    • one year ago
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    it was explained to me that I needed to reverse the numerator and the denominator .... now confused :{

  16. ganeshie8
    • one year ago
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    just a convention always put the "image" side on top

  17. anonymous
    • one year ago
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    ok... so i need to go back and fix the other as well then or it will be incorrect?.

  18. ganeshie8
    • one year ago
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    whats your answer for the other one with quadrilateral ?

  19. anonymous
    • one year ago
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    simplified 3/4.... but that was doing the switching thing bc I originally had 4/3

  20. ganeshie8
    • one year ago
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    3/4 is correct.

  21. anonymous
    • one year ago
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    ok, but what is the reason I flip the one and not the other? I just want to make sure I understand it

  22. ganeshie8
    • one year ago
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    no wait, in the first question, the bigger triangle is image, yes ?

  23. anonymous
    • one year ago
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    let me reread it

  24. anonymous
    • one year ago
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    it reads as if the ABC is the original and the other is the dilation

  25. anonymous
    • one year ago
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    if it is image on top the the first would be 12/9 simplified to 4/3

  26. ganeshie8
    • one year ago
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    |dw:1433344043799:dw|

  27. anonymous
    • one year ago
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    kk

  28. ganeshie8
    • one year ago
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    Image = final picture after dilation preimage = original picture before dilation

  29. anonymous
    • one year ago
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    and the image or original is the numerator the copy the denominator right?

  30. ganeshie8
    • one year ago
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    again, image is final picture after dilation

  31. ganeshie8
    • one year ago
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    preimage is original picture before dilation

  32. anonymous
    • one year ago
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    no I said it wrong meant to say it the other way... now I am confusing myself...lol

  33. ganeshie8
    • one year ago
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    for first question 5/2 is correct for second question 3/4 is correct

  34. anonymous
    • one year ago
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    Just seems as if it should be the other way around :) I got it now. I just need to pay close attention to which one is the original and which is the copy. I think if I look at it that way vs. image/pre-image I get it a bit better.

  35. ganeshie8
    • one year ago
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    actually scaale factor = pre-image/image makes more sense

  36. ganeshie8
    • one year ago
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    because you can get the dimensions of image by simply multiplying the original dimensions by scale factor

  37. anonymous
    • one year ago
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    and always put the original on top and copy on bottom right?

  38. ganeshie8
    • one year ago
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    always put image on top original on bottom

  39. ganeshie8
    • one year ago
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    you just need to do couple of problems before seeing why it makes sense

  40. anonymous
    • one year ago
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    ok,ok, I got this now :) Thank you. sometimes it is the smallest of things that trip me up but it just takes putting it in to a way my brain accepts the info without twisting it...yay for dyslexia...again thank you :)

  41. ganeshie8
    • one year ago
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    this trips everyone in the start, things will make sense by practice eventually

  42. anonymous
    • one year ago
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    tyvvm!

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