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anonymous
 one year ago
Solve for x.
logx+log(x15)=2
anonymous
 one year ago
Solve for x. logx+log(x15)=2

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hartnn
 one year ago
Best ResponseYou've already chosen the best response.1hello :) what did you try?? tried combining those 2 logs?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I know what you have to do, however, I am not sure how to do it :(

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I don't know how to combine the logs

hartnn
 one year ago
Best ResponseYou've already chosen the best response.1\(\log A + \log B = \log AB \) so how about log x + log (x15) ?

hartnn
 one year ago
Best ResponseYou've already chosen the best response.1you're asking if x = 20 ? how did you do all the steps so fast! :O

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I've been working on this problem for a really long time and I wasn't sure if I was doing the steps right so I posted on here. I think the answer is 20...I don't know what else it could be :(

hartnn
 one year ago
Best ResponseYou've already chosen the best response.1oh great! you've tried some steps... can you post them here, we'll correct then if required.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Oh boy... I don't know where to begin! I'll write the most recent steps I've tried...one moment

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I used the formula \[a=\log _{b}(b ^{a})\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[2= \log _{10}(10^2)\]

hartnn
 one year ago
Best ResponseYou've already chosen the best response.1for the right side? so, \(2 = \log 10^2 \)

hartnn
 one year ago
Best ResponseYou've already chosen the best response.1but for the left side we will need the formula I posted :)

hartnn
 one year ago
Best ResponseYou've already chosen the best response.1\(\log x + \log(x15) = \log x\times(x15) \\= \log 10^2\)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[\log _{10}(x)+\log _{10}(x15)=\log _{10}(10^2)\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[\log _{10}(x(x15))=\log _{10}(10^2)\]

hartnn
 one year ago
Best ResponseYou've already chosen the best response.1you get how \(\Large \log x + \log (x15) = \log [x\times (x15)]\) basically just a log property

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0and the answeres are x=20 and x=5 but we cant have a negative log so it must be 20

hartnn
 one year ago
Best ResponseYou've already chosen the best response.1if log A = log B, then A = B what that says is that you can just cancel out log on both sides! so we have x(x15) = 10^2 got this?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yes I just skipped the last steps at the end because they were really small and by then I already figured out my answers :)

hartnn
 one year ago
Best ResponseYou've already chosen the best response.1oh you solved it completely. excellent! x =20 is correct :)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Thanks @hartnn , I appreciate your time :)

hartnn
 one year ago
Best ResponseYou've already chosen the best response.1welcome ^_^ happy to help :)
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