anonymous
  • anonymous
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?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
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anonymous
  • anonymous
A. 30 feet B. 12 feet C. 24 feet D. 15 feet
anonymous
  • anonymous
or at least could someone tell me what i need to do to find my answer ? do i multiply to get the length ? divide ?

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More answers

anonymous
  • anonymous
Apply ratio with S is the length of the tree shadow: S/ 20 = 7.5 / 5 => S = ...? @alainabbyboo22 Can you continue?
anonymous
  • anonymous
what is "S" supposed to be ? i don't get this ..
ganeshie8
  • ganeshie8
Shadow its same as x in ur pix
anonymous
  • anonymous
oh okay . but no , i'm unable to continue because i'm unsure of how to do this . /:
ganeshie8
  • ganeshie8
\(\frac{S}{20} = \frac{7.5}{5}\) you need to solve S
ganeshie8
  • ganeshie8
for that you need to isolate S, multiply 20 both sides
anonymous
  • anonymous
S/400 = 150/S
anonymous
  • anonymous
correct or incorrect ?
anonymous
  • anonymous
You divide it :(
ganeshie8
  • ganeshie8
\(\frac{S}{20} = \frac{7.5}{5}\) multiply 20 both sides \(20*\frac{S}{20} = 20*\frac{7.5}{5}\)
ganeshie8
  • ganeshie8
does 20 cancel on left side ?
ganeshie8
  • ganeshie8
\(\cancel{20}*\frac{S}{\cancel{20}} = 20*\frac{7.5}{5}\)
ganeshie8
  • ganeshie8
simplify right side
anonymous
  • anonymous
@alainabbyboo22 Learn to multiply, will you !

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