Archive for October, 2007

Problem 106651 solved by elima

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. Share and Enjoy: These icons link to social bookmarking sites where readers can share and discover new web pages. Read more

Problem 106661 solved by elima

Monday, October 29th, 2007

webmaster@algebra.com: This problem was solved by elima: Solve: 7x\6-2=9x\6-3 Thanks. Share and Enjoy: These icons link to social bookmarking sites where readers can share and discover new web pages. Read more

Problem 106747 solved by ankor@dixie-net.com

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 … Share and Enjoy: These icons link to social bookmarking sites where readers ...

Problem 106652 solved by elima

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). Share and Enjoy: These icons link to social bookmarking sites where readers can share and discover new web pages. Read more

Problem 106727 solved by jim_thompson5910

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) Share and Enjoy: These icons link to social bookmarking sites where readers can share and discover new web pages. Read more

Problem 106698 solved by elima

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? Share and Enjoy: These icons link to social bookmarking sites where readers can share and discover new web pages. Read more

Problem 106763 solved by Earlsdon

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 + … Share and Enjoy: These icons link to ...

Business Calculus

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 … Read more

Permutation Algebra Problem

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). Share and Enjoy: These icons link to social bookmarking sites where ...

Yet another calculus problem..last one I promise!

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) … Share ...