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anonymous
 4 years ago
How do I get from 2a+a+sqrt(3a^2)=20 to.... a=8.453?
anonymous
 4 years ago
How do I get from 2a+a+sqrt(3a^2)=20 to.... a=8.453?

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anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0How did you arrive at that answer?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0are you sure you plugged it in correctly?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0I entered the equation exactly how it here.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Then you must've typed it here wrong. That is not the correct answer.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0http://www.wolframalpha.com/input/?i=2a%2Ba%2B+sqrt%283a%5E2%29%3D20 are you able to see this, my friend?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0\[2a+a+\sqrt(3a^2)=20\]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0It doesn't say the answer is 8.453

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0It does, in the solution: a=10/3(sqrt(3)3).

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0That comes out to approximately 4.2265

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0You're right I made a mistake, my answer is two times 4.2265.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0OK i will show you how to do the work correctly.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0I am still wondering how I get there though.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0\[3a+\sqrt(3a^2)=20\] \[a(3+\sqrt(3))=20\] \[a=\frac{20}{(3+\sqrt(3))}\]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0From here we rationalize the denominator

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0I am confused in the second step.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0\[\frac{20}{3+\sqrt(3)} * \frac{3\sqrt(3)}{3\sqrt(3)}\]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0In the second step i simply factored out an a because \[\sqrt(a^2)=a\]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0so it would be \[3a+a \sqrt(3)\]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Then you can factor out an a here, see?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0okay, i see now thank you very much !

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Do you know how to rationalize the denominator?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0You must do that to get to the final answer

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0I do, i need to try it to make sure i get the mechanics of it.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0The numberator should be 6020sqrt(3), correct? And I am having difficulties with the denominator? Could you help please?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Nevermind, I figured it out, thank you.
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