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Mth 173
Your 'question form' report has been received. Scroll down through the document to see any comments I might have inserted, and my final comment at the end.
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proportionalities notes
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quiz week 3 number 3 version 21
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course Mth 173
6/19 7:30 pm
Solve using proportionalities by stating the appropriate proportionality law and finding the proportionality constant:•If a small whale 2.6 meters long has a mass of 207.36 kg, then what should be the mass of a geometrically similar whale 7.4 meters long?
For directly proportional :
Y= kx
2.6 m = k(207.36 kg)
K= .125
So for the second whale:
7.4 m = .0125 (kg)
Mass= 592 kg
• If the first whale is losing thermal energy at the rate of 288 watts, then under identical conditions at what rate would we expect the second whale to be losing energy?
????????I would assume the rate would be y which equals 288 watts. And I think that this proportionality relationship would be inversely related. But I’m confused what to substitute in so here’s my best guess:
For inversely proportional :
Y = k/ x
288 watts = k / 2.6 m
K = 748.8
So for the second whale:
Watts = (748.8) / 7.4 m
Watts = 101.189
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This topic is covered in the modeling project and in the class notes, where you will learn about proportionalities to the square and cube, as well as inverse and direct proportionalities involving geometrically similar figures.
Be sure to review that material completely, then submit another version of this problem.
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I don't see where the topic of proportionalitites was covered in detail? I know that we touched briefly on it in the book but I've looked through your class notes, videos, the book, and the modeling project and don't see where the laws of proportionalities are? I must have overlooked this topic at some point? can you tell me where this topic is covered in more detail?
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This is covered in Modeling Project 3.
However the link on your Assignments Page took you to only one of the two worksheets related to this Modeling Project.
The second worksheet contains material that will be important for your course, and I'll ask you to work through it. I don't expect it to give you much trouble, and it should provide you with very helpful and important information.
The corrected link takes you to the following
http://vhcc2.vhcc.edu/cal1fall/frames%20pages/modeling_project_3.htm
which contains two links, one to the document you have already completed, and the other to the document whose link was missing.
I do apologize for the error in linking this modeling project, which has now been correct.
Thanks for bringing this to my attention.
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