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OpenStudy (anonymous):
3 over x equals x over 32 help
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OpenStudy (ivettef365):
that sounds like a proportional problem
OpenStudy (ivettef365):
cross multiply
OpenStudy (zzr0ck3r):
\[\frac{3}{x}=\frac{x}{32}\]
\[x^2 = 96\]
OpenStudy (anonymous):
I got 96 when I cross multiplied. that's one of my answer choices but there are also radical answers
OpenStudy (zzr0ck3r):
\[x=\pm \sqrt{96}\]
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OpenStudy (anonymous):
I got it wrong :/ im gonna post the problem so you can see it
OpenStudy (anonymous):
Solve for x.
3 over x equals x over 32
96
48
4 radical 6
6 radical 4
OpenStudy (zzr0ck3r):
\[x=\pm \sqrt{48*2}=\pm \sqrt{4*4*6}=\pm 4\sqrt{6}\]
OpenStudy (anonymous):
how did you do it?
OpenStudy (zzr0ck3r):
hmm I showed the steps. Which part?
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OpenStudy (anonymous):
oh wait I get it now.. Im just confused on how you got 48?
OpenStudy (zzr0ck3r):
(3/x) = (x/32)
multiply each side by 32x
x^2 = 96
sqrt both sides
x=sqrt(96)
96 = 4*4*6
so
x = sqrt(4*4*6)
x = 4sqrt(6)
OpenStudy (anonymous):
ohhhh, I get it now, its not that hard. sorry to bother you. THANK YOU A LOT :)
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