A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • 5 years ago

alright, attached is the question im having trouble with now....

  • This Question is Closed
  1. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    1 Attachment
  2. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so far, i know that get the equation of the are of the rectangle, so: A=l times w [l.w] and that i should derive that equation i formed, but im having trouble at this point... not to sure on how to fine the A'. or perhaps am i on the wrong path? o:

  3. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    It's really hard to measure the rate of change for the area. Lets say one second has passed by. Now we have a w=1 and l=16. Area of that is 16. original area is 60 (5*12) so the area changed by 44/1sec. Now lets say half a second. w=3 l=14. The area of that is 42. The difference is now 18/0.5sec = 36/1sec. Now the lengths are changing proportional 1gain:1 loss so you can figure out how the rate is changing. Hint: if in every second you gain the same you lose how much are you changing? Again the diagonals change is not constant. try to measure the change from .5 seconds to 1 second and compare the change in length to the change rate of the area. Well is the length of the diagonals increasing? well yes but how much? next i told you the change in area is lowering.

  4. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    alright, thanks so much, figured it out :] i got the area decreasing at 44 cm^2/sec the perimeter is constant and the diagonals i increasing at a rate of 3cm/sec.

  5. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.