Archive for October, 2007
Monday, October 29th, 2007
webmaster@algebra.com:
This problem was solved by elima: Graph the following system 2x+y=8 and 2x-y=0. Thank you.
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Monday, October 29th, 2007
webmaster@algebra.com:
This problem was solved by elima: Solve: 7x\6-2=9x\6-3 Thanks.
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Monday, October 29th, 2007
webmaster@algebra.com:
This problem was solved by ankor@dixie-net.com: Mike and Matthew are each responsible for mowing half of their 60 foot by 100 foot rectangular back yard. MIke starts mowing at an outside corner, gradually working his way toward the …
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Monday, October 29th, 2007
webmaster@algebra.com:
This problem was solved by elima: Given f(x)=-x^3+x^2+3x+4, find f(-1), f(0), and f(1).
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Monday, October 29th, 2007
webmaster@algebra.com:
This problem was solved by jim_thompson5910: I need help with this innequality: 1/5 (one fifth)x + 1/2 (one half) is > 4/5 (four fifths)
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Monday, October 29th, 2007
webmaster@algebra.com:
This problem was solved by elima: I’m confused on how to do this problem. I’m suppose to find X. How do I do that?
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Monday, October 29th, 2007
unknown:
This problem was solved by Earlsdon: Hello I have a substitution problem with 3 equations, there are no examples in my text for a 3 equation using the substitution method to solve when there are missing variables in some of them 3x + …
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Monday, October 29th, 2007
unknown:
1. C(x)=2200 + 5x + 0.002x^2 + 0.00013x^3 (a) Find the average cost function and sketch it (b.) At what production level is the average cost minimized? 2. Relevant equations My book defines the average cost as c(x)=C(x)/x …
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Monday, October 29th, 2007
unknown:
Do the two permutations (1 2 3 4 5 6 7) and (3 4)(5 6)(7 generate all of the permutation group S8? If so, please show. One way might be to show that they can generate (7 8).
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Monday, October 29th, 2007
unknown:
I’m so glad the members of SF know calculus better than I do lol. Here is the function to derive: y = ( (1+sin x) / (1-cos x) )^2 This is what I get, but I cannot figure out how to simplify it (hopefully my calculus is correct) …
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