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Solve the formula for the specified variable.

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i mean \[n=\frac{ IR }{ e-Ir }\]
You mean

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Other answers:

\[n= \frac{ -IR }{ Ir - E }\]
because the only option there are this. n= IR( Ir - E ) n= \[\frac{ -R }{ Ir - E }\] n=\[\frac{ IR }{ Ir + E }\]
and n= \[\frac{ -IR }{ Ir - E }\]
Do I think its the last one like I said
\[1st: I(nr+R)=n e\] \[2nd: Inr+IR=n e\] \[3rd:IR=n e-Inr\] \[4th: IR=n(e-Ir)\] \[5th: n=\frac{ IR }{ e-Ir }\]
\[6th: n=\frac{ IR }{-(-e+Ir)}\] \[7th: n=\frac{ -IR }{ -e+Ir }\]
the last one is right, though your e is capital
Yeah I thought so thank you so much :)
thanks for the medal

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