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anonymous

  • one year ago

On a sunny day, a 5-foot red kangaroo casts a shadow this is 7 feet long. The shadow of a nearly eucalyptus tree is 35 feet long. Write and solve a proportion to find the height of the tree. Pleaseee help!!!!

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  1. BloomLocke367
    • one year ago
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    Do you know what a proportion is?

  2. anonymous
    • one year ago
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    Yes but can u explain cause I kinda forgot

  3. anonymous
    • one year ago
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    @bloomlocke367

  4. BloomLocke367
    • one year ago
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    Okay, a proportion is hmmmm I'm trying to think of how to explain this. It's something that normally compares two things that are either part to whole or part to part. For this particular problem, you'd set one up comparing height of the figure, to how long the shadow is.

  5. anonymous
    • one year ago
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    |dw:1440959648712:dw|

  6. anonymous
    • one year ago
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    the tree is 49 feet tall

  7. BloomLocke367
    • one year ago
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    So you'd have \(\large\tt \frac{height~of~kangaroo}{length~of~kangaroo~shadow}= \frac{height~of~tree}{length~of~tree~shadow}\)

  8. BloomLocke367
    • one year ago
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    I don't know why the spacing didn't work. :/

  9. anonymous
    • one year ago
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    But how do u exactly solve this?

  10. anonymous
    • one year ago
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    my picture!

  11. BloomLocke367
    • one year ago
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    Well, first plug in your values. They have to match up

  12. anonymous
    • one year ago
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    nevermind i fuced up

  13. anonymous
    • one year ago
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    do my picture but use BloomLockes formula

  14. BloomLocke367
    • one year ago
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    After you set up your proportion, you cross multiply and divide.

  15. BloomLocke367
    • one year ago
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    I'll explain once you come up with the proportion.

  16. anonymous
    • one year ago
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    yeah math

  17. anonymous
    • one year ago
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    What is the other proportion on the other side is it 35/7 cause the denominator stays the same?

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  18. BloomLocke367
    • one year ago
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    I don't understand what you're asking :/ What are you confused about?

  19. anonymous
    • one year ago
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    Is 5/7 the first step right?

  20. BloomLocke367
    • one year ago
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    Given the model I gave you, you should have: \(\huge\frac{5}{7}=\frac{?}{35}\)

  21. anonymous
    • one year ago
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    Ok yea

  22. BloomLocke367
    • one year ago
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    You're trying to find the missing piece. To do that, you cross multiply 5 and 35 and then you take that product and divide it by 7.

  23. anonymous
    • one year ago
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    I got 25

  24. BloomLocke367
    • one year ago
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    Correct! Great job. Do you understand now?

  25. BloomLocke367
    • one year ago
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    @Jazzyjose8

  26. anonymous
    • one year ago
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    Yes thank you so much I had problems with cross multiplying I get be4 wait so 25 is the numerator and 35 is the denominator?

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