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alainabbyboo22

  • 3 years ago

At a certain time of day, a 5 foot tall man has a 7.5 foot shadow. If a tree is 20 feet tall, what is the length of the shadow of the tree?

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  1. alainabbyboo22
    • 3 years ago
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  2. alainabbyboo22
    • 3 years ago
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    A. 30 feet B. 12 feet C. 24 feet D. 15 feet

  3. alainabbyboo22
    • 3 years ago
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    or at least could someone tell me what i need to do to find my answer ? do i multiply to get the length ? divide ?

  4. Chlorophyll
    • 3 years ago
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    Apply ratio with S is the length of the tree shadow: S/ 20 = 7.5 / 5 => S = ...? @alainabbyboo22 Can you continue?

  5. alainabbyboo22
    • 3 years ago
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    what is "S" supposed to be ? i don't get this ..

  6. ganeshie8
    • 3 years ago
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    Shadow its same as x in ur pix

  7. alainabbyboo22
    • 3 years ago
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    oh okay . but no , i'm unable to continue because i'm unsure of how to do this . /:

  8. ganeshie8
    • 3 years ago
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    \(\frac{S}{20} = \frac{7.5}{5}\) you need to solve S

  9. ganeshie8
    • 3 years ago
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    for that you need to isolate S, multiply 20 both sides

  10. alainabbyboo22
    • 3 years ago
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    S/400 = 150/S

  11. alainabbyboo22
    • 3 years ago
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    correct or incorrect ?

  12. Chlorophyll
    • 3 years ago
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    You divide it :(

  13. ganeshie8
    • 3 years ago
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    \(\frac{S}{20} = \frac{7.5}{5}\) multiply 20 both sides \(20*\frac{S}{20} = 20*\frac{7.5}{5}\)

  14. ganeshie8
    • 3 years ago
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    does 20 cancel on left side ?

  15. ganeshie8
    • 3 years ago
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    \(\cancel{20}*\frac{S}{\cancel{20}} = 20*\frac{7.5}{5}\)

  16. ganeshie8
    • 3 years ago
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    simplify right side

  17. Chlorophyll
    • 3 years ago
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    @alainabbyboo22 Learn to multiply, will you !

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