looking for simple maths question?
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7^x. 3^x.3=15\n\n(7.3)^x .3=15\n\n21^x=15/3\n\n21^x=5\n\nx.ln21=ln5\n\nx=ln5/ln21
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duh...?  what's your question, Mam?  \n\n=0(
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Here are a few sites you can check out:\nhttp://www.freemathhelp.com/\nhttp://www.mathgoodies.com/\n\nHope these sites can help you..
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http://www.bymath.com\n\nand this is my weblog it is new but it will been good in future http://bymath.blogfa.conm\nDont forget comment!!!
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http://www.mathexplained.com\n\nThe first Question is free and you have to pay after that but if you talk to them, they'll do more questions for the same amount of money.
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Drop me your email. I will do one and send it to you. Easier than explaining...just look at my formulas...will only take a minute...really...\n\nCheck your email\n\nIs what I gave you what you want?
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Try this link and read it all the way through.  It's short.\n\nhttp://mathcentral.uregina.ca/qq/database/QQ.09.00/tom3.html\n\nThis link is better:\n\nhttp://mathforum.org/library/drmath/view/56760.html\n\nJust scroll down.
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Use analytical trig (hint: sin function).  That should give you the answer you are looking for.
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that is a really simple question, so if you have a calculator you should be able to get it, otherwise, it is your homework and I refuse to give you an answer to your homework. I would actually HELP you to get the answer if you asked for HELP doing it.\n\n-EA
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x ≤ 5\n\n-- - - - - - -s-
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Ask Dr. Math is my favorite.  You can also try Mathworld, though I usually find that I leave it more confused than when I entered.
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Check out http://math.mit.edu/research/index.html
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go on\nwww.hotmath.com
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The formula involves complex maths calculations. Ask some maths professor.
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www.mathworld.com\nwww.math.com\nits got everything elementary!
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math made simple, 6th edition.
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http://www.mathnstuff.com/math/spoken/here/1words/p/p7.htm