Some math help possibly?
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thread starter xAzNPhOeNiXx Apr 26 2009
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| 5^x +3^(2x) = 92 Answer is 1.93, but can anyone figure out how to obtain it? |
MrTofu 04/26/09
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| why is there so much math help today |
aznboi1324 04/26/09
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 | No clue sorry. Free bum[p |
superswanton 04/26/09
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| idk how to solve it but i know that ^ means an exponent |
xAzNPhOeNiXx 04/26/09
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| MrTofu said: "why is there so much math help today" I just refreshed and I saw the other one too, :P |
de4db0lt 04/26/09
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TodZumTeufel 04/26/09
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| graph 5^x +3^(2x) and 92 and find where they intersect, at least thats the easy way |
jack14knight 04/26/09
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 | is this like change of base stuff? so you have to find 5^x = sqrt(5)^2x then you can add the two to get (3+sqrt(5))^2x = 92? is that what this is? or am i totally off. sorry...havent done this kinda math in years. |
tkoh 04/26/09
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| logs are too annoying. D: algebra 1~geometry please :P |
xAzNPhOeNiXx 04/26/09
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| TodZumTeufel said: "graph 5^x +3^(2x) and 92 and find where they intersect, at least thats the easy way" Well yes, I could always do guess and check as well, but there should be a way to solve shouldnt there |
Kehaar 04/26/09
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| Well first you have to find the pOH of Ammonia (NH3), and with that information you can find the pH. (Hint: Kw = 10^-14) |
xAzNPhOeNiXx Apr 26 2009
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| Kehaar said: "Well first you have to find the pOH of Ammonia (NH3), and with that information you can find the pH. (Hint: Kw = 10^-14)" Oh why thanks -_- |
TodZumTeufel 04/26/09
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| fine, then the hard way... x ln 5 + 2x ln 3 = ln 92 |
Herosgate 04/26/09
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| MrTofu said: "why is there so much math help today" Its a sunday, Kids don't do their homework (lol, Im such a Hypocrite xD) |
xAzNPhOeNiXx 04/26/09
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| TodZumTeufel said: "fine, then the hard way... x ln 5 + 2x ln 3 = ln 92" What can I do from there? |
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