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



This Question is Closed

ksaimouli
Best Response
You've already chosen the best response.
0
dw:1353865196344:dw

ksaimouli
Best Response
You've already chosen the best response.
0
beside 5 is 20

ksaimouli
Best Response
You've already chosen the best response.
0
i just want

ksaimouli
Best Response
You've already chosen the best response.
0
similar triangle

ksaimouli
Best Response
You've already chosen the best response.
0
can i use dw:1353865365236:dw

ksaimouli
Best Response
You've already chosen the best response.
0
@hartnn

asnaseer
Best Response
You've already chosen the best response.
0
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
Best Response
You've already chosen the best response.
0
i know i got 18 but book used another one dw:1353865556968:dw

ksaimouli
Best Response
You've already chosen the best response.
0
which is right way

ksaimouli
Best Response
You've already chosen the best response.
0
they got 2ft/sec

asnaseer
Best Response
You've already chosen the best response.
0
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
Best Response
You've already chosen the best response.
0
hmmm

asnaseer
Best Response
You've already chosen the best response.
0
maybe if you listed your steps then I may be able to help you spot where you may have made a mistake

ksaimouli
Best Response
You've already chosen the best response.
0
dw:1353865761171:dw

ksaimouli
Best Response
You've already chosen the best response.
0
dw:1353865816040:dw

ksaimouli
Best Response
You've already chosen the best response.
0
dx/dt=6

asnaseer
Best Response
You've already chosen the best response.
0
sorry I meant that you have been given dy/dt = 6

asnaseer
Best Response
You've already chosen the best response.
0
x represents the shadow length

ksaimouli
Best Response
You've already chosen the best response.
0
so the shadow falls in front of her because the light is backwards?

asnaseer
Best Response
You've already chosen the best response.
0
yes  but I would say the light is behind her rather than "backwards" :)

ksaimouli
Best Response
You've already chosen the best response.
0
thx becasue of silly mistake whole answer is wrong thx for correcting me

asnaseer
Best Response
You've already chosen the best response.
0
yw :)