anonymous
  • anonymous
A street light is mounted at the top of a 14 ft tall pole. A woman 6 ft tall walks away from the pole with a speed of 6 ft/sec along a straight path. How fast is the tip of her shadow moving when she is 45 ft from the base of the pole?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
katieb
  • katieb
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anonymous
  • anonymous
use similar triangles. create two similar triangles based on the information tehn take the derivative
anonymous
  • anonymous
i dont understand how to do that
anonymous
  • anonymous
check out this website and go to example 2, it has a similar question with different numbers =) http://www.math.wfu.edu/tutorials/Math111/RelatedRates.pdf

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bahrom7893
  • bahrom7893
okay carra i will solve it, im done with my hw
bahrom7893
  • bahrom7893
For the answer try 9/2 (ft/sec) , let me know whether it is correct. If it is, I will post the solution.
anonymous
  • anonymous
no not the answer
bahrom7893
  • bahrom7893
try 4.5
anonymous
  • anonymous
no
bahrom7893
  • bahrom7893
k let me see if i did anythinig wrong, brb
bahrom7893
  • bahrom7893
can you double check the question?
anonymous
  • anonymous
question is correct
bahrom7893
  • bahrom7893
okay, let me check my work again
bahrom7893
  • bahrom7893
can you try 4/3 or 1.3
anonymous
  • anonymous
no i sorry
anonymous
  • anonymous
hey
anonymous
  • anonymous
im on the case
anonymous
  • anonymous
do you mind, i will use twiddla
anonymous
  • anonymous
http://www.twiddla.com/492533
anonymous
  • anonymous
click on that
bahrom7893
  • bahrom7893
Okay so cantorset, this is what im doing: y/6 = (y+x)/14 => look at that in terms of similar triangles. Cross multiply and simplify: 14y = 6x + 6y 14(dy/dt)=6(dx/dt) + 6(dy/dt) 8 d(y/dt) = 6 (dx/dt) 8(dy/dt) = 6 * 6 8(dy/dt) = 36, solve for dy/dt = 9/2. What am I doing wrong?
anonymous
  • anonymous
its a whiteboard
bahrom7893
  • bahrom7893
carra try 10.5
bahrom7893
  • bahrom7893
uploading the screen
bahrom7893
  • bahrom7893
http://i53.tinypic.com/o6i8b7.jpg there's the screen
bahrom7893
  • bahrom7893
i gtg now, bbl

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