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Mathematics 21 Online
OpenStudy (anonymous):

What value of n solves the equation?

OpenStudy (anonymous):

OpenStudy (rushwr):

give it a try !

OpenStudy (anonymous):

what's the equation again

OpenStudy (rushwr):

\[3^{n}=\frac{ 1 }{ 3^{4}}\]

OpenStudy (rushwr):

\[3^{n}=\frac{ 1 }{ 3^{-n} }\]

OpenStudy (anonymous):

\[\frac{ 1 }{ 81 }\]

OpenStudy (rushwr):

\[81=3^{4}\]

OpenStudy (anonymous):

3^4 = 81

OpenStudy (anonymous):

right?

OpenStudy (rushwr):

yes here it's getting a negative value

OpenStudy (rushwr):

yes here it's getting a negative value \[3^{n}=\frac{ 1 }{ 3^{4}}\]

OpenStudy (rushwr):

got it ?

OpenStudy (anonymous):

its \[\frac{ 1 }{ 81 }\]

OpenStudy (anonymous):

?

OpenStudy (rushwr):

\[\frac{ 1 }{ 81 }=\frac{ 1 }{ 3^{4}}\]

OpenStudy (anonymous):

ys

OpenStudy (rushwr):

then what do u think the answer is ?

OpenStudy (anonymous):

i dont know

OpenStudy (rushwr):

\[3^{n}=\frac{ 1 }{ 3^{4}}\] right? So \[3^{n} = 3^{-4}\] remember what we did early? So n= -4

OpenStudy (anonymous):

ohhhhhh

OpenStudy (anonymous):

thank you

OpenStudy (rushwr):

anytym !

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