Archive for January, 2008
Wednesday, January 30th, 2008
webmaster@algebra.com:
Click on the link to solve this problem: A dealer wishes to produce 300 gallons of oil worth $0.40/quart. He has oil worth $0.36/quart and oil worth $0.52/quart. How many quarts each should he mix? ___quarts of $0.36 ___quarts of $0.52.
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Wednesday, January 30th, 2008
webmaster@algebra.com:
Click on the link to solve this problem: An alloy of silver and gold is to be recast with an addition of silver. The alloy consists of 80 oz, of which 10 oz are gold. If the new alloy is to have only 1/5 of gold in 5 oz, ...
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Wednesday, January 30th, 2008
webmaster@algebra.com:
This problem was solved by chitra: Please tell me if I am correct. I am performing indicated operation in lowest terms. {{{(2/21x)-(4/15x^2)}}} My LCD = {{{105x^2}}} {{{(10x-28)/105x^2}}} by taking lcd multiplied by both …
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Wednesday, January 30th, 2008
unknown:
Click on the link to solve this problem: The bank loans you $6000 at 12% interest for 6 months. Find the total amount due on the loan.
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Wednesday, January 30th, 2008
webmaster@algebra.com:
I’ve finished a book on SAGE and differential calculus. The idea was to simply take the old book Granville’s Elements of Calculus, which is public domain now, and slightly modernize and “SAGE-ify” it. The source code, with the pdf form …
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Wednesday, January 30th, 2008
unknown:
And assume that the seniors have good math skills and reasonable organization skills. In past years handing out and collecting have been main activities, and less frequently working with one or two students who needed help as the lesson …
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Wednesday, January 30th, 2008
webmaster@algebra.com:
This problem was solved by Edwin McCravy: Use the indicated property to write an expression that is equivalent to the following expression. (9 0) 17 (associative property of multiplication)
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Wednesday, January 30th, 2008
webmaster@algebra.com:
This problem was solved by josmiceli: Suppose you invest $1500 in equipment to put pics on t-shirts.You buy each t-shirt for $3.After you have placed the pic on a shirt,you sell it for $20.How many t-shirts must you sell to break even?
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Wednesday, January 30th, 2008
webmaster@algebra.com:
This problem was solved by rajagopalan: Please show me how to work this problem. Thanks! Kathy has as many quarters as dimes, but twice as many nickles as dimes. She has 844 coins, how much money does she have?
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Wednesday, January 30th, 2008
webmaster@algebra.com:
This problem was solved by josmiceli: A tub contains 300 l of a 32% salt solution. How much water must be added to reduce it to a 20% solution?
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