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Mathematics 21 Online
OpenStudy (anonymous):

need help finding the solution(s) to this equation..

OpenStudy (anonymous):

\[y ^{-1}-22^{-1 \over 2}+120=0\]

OpenStudy (anonymous):

1/y -(sqrt[22])+120 = 0 y = 1/(sqrt[22]-120)

OpenStudy (anonymous):

wrong 1/y -(1/(sqrt[22]))+120 = 0 1/y = (1/(sqrt(22) - 120) = (1-120*sqrt[22])/sqrt[22]) y = sqrt[22]/(1-120sqrt[22])

OpenStudy (anonymous):

wait, so the first thing you wrote is wrong. But this second one is right?

OpenStudy (anonymous):

yep

OpenStudy (anonymous):

oh ok, so there is only one answer? \[\sqrt{22}\over 1-120\sqrt{22}\] is this correct?

OpenStudy (anonymous):

the line didn't show up but it's supposed to be a fraction

OpenStudy (anonymous):

he left :(. Polpak, does that look correct to you?

OpenStudy (anonymous):

Sorry, one sec

OpenStudy (anonymous):

\[\frac{1}{y} - \frac{1}{\sqrt{22}} + 120 = 0\] \[\implies \frac{1}{y} = \frac{1}{\sqrt{22}} - 120\] \[\implies \frac{1}{y} = \frac{1}{\sqrt{22}} - \frac{120\sqrt{22}}{\sqrt{22}}\] \[\implies \frac{1}{y} = \frac{1-120\sqrt{22}}{\sqrt{22}}\] \[\implies y =\frac{\sqrt{22}}{1-120\sqrt{22}} \]

OpenStudy (anonymous):

Yeah, that's correct

OpenStudy (anonymous):

can i get some help again please..

OpenStudy (anonymous):

the root 22 on the bottom part wouldn't type in my online assignment.. so it must not be there..

OpenStudy (anonymous):

Are you certain the original equation is correct?

OpenStudy (anonymous):

i will double check.

OpenStudy (anonymous):

wow. I don't know why i keep doing that..but I forgot the y.. it is all the same except there is a y after the 22

OpenStudy (anonymous):

\[y ^{-1}-22y ^{-1 \over 2}+120=0\]

OpenStudy (anonymous):

sorry!!

OpenStudy (anonymous):

Ah, that's nicer certainly.

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