ksaimouli
  • ksaimouli
a woman 5 feet tall is walking away from a streetlight hung 20 feet from the ground at a rate of 6ft how fast the shadow lengthing
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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ksaimouli
  • ksaimouli
|dw:1353865196344:dw|
ksaimouli
  • ksaimouli
beside 5 is 20
ksaimouli
  • ksaimouli
i just want

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More answers

ksaimouli
  • ksaimouli
similar triangle
ksaimouli
  • ksaimouli
can i use |dw:1353865365236:dw|
ksaimouli
  • ksaimouli
@hartnn
asnaseer
  • asnaseer
you are using exactly the right approach. find x in terms of y and then differentiate with respect to time to get your answer.
ksaimouli
  • ksaimouli
i know i got 18 but book used another one |dw:1353865556968:dw|
ksaimouli
  • ksaimouli
which is right way
ksaimouli
  • ksaimouli
they got 2ft/sec
asnaseer
  • asnaseer
I think you have an error in your calculation. If I use the same ratio as you showed initially then I get an answer of 2 ft/s
ksaimouli
  • ksaimouli
hmmm
asnaseer
  • asnaseer
maybe if you listed your steps then I may be able to help you spot where you may have made a mistake
ksaimouli
  • ksaimouli
|dw:1353865761171:dw|
ksaimouli
  • ksaimouli
|dw:1353865816040:dw|
ksaimouli
  • ksaimouli
dx/dt=6
asnaseer
  • asnaseer
sorry I meant that you have been given dy/dt = 6
asnaseer
  • asnaseer
x represents the shadow length
ksaimouli
  • ksaimouli
so the shadow falls in front of her because the light is backwards?
asnaseer
  • asnaseer
yes - but I would say the light is behind her rather than "backwards" :)
ksaimouli
  • ksaimouli
thx becasue of silly mistake whole answer is wrong thx for correcting me
asnaseer
  • asnaseer
yw :)

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