anonymous
  • anonymous
The sum of a number and its reciprocal is 5 1/5.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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UnkleRhaukus
  • UnkleRhaukus
take a guess
anonymous
  • anonymous
do I have to convert the mixed fraction to a improper fraction?
UnkleRhaukus
  • UnkleRhaukus
if you can't see the answer staring at you

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More answers

lgbasallote
  • lgbasallote
sadly, i cannot see the answer staring at me either
anonymous
  • anonymous
\[x^2+1-5\frac{1 }{ 5}=0?\]
zzr0ck3r
  • zzr0ck3r
5 and 1/2 what does and mean? and what is the recipicle of 5?
anonymous
  • anonymous
1/5
zzr0ck3r
  • zzr0ck3r
so what does and mean?
anonymous
  • anonymous
but I don't get what the question is asking.. it says what is the reciprocal of 5 and 1/5... but how is it 5 or 1/5?
zzr0ck3r
  • zzr0ck3r
its asking what two numbers can you add together and get 5 and 1/2 or what numbers can you add together and get 5+1/2 note: 5 is the recipicle of 1/5 and vice versa
lgbasallote
  • lgbasallote
5 and 1/5*
zzr0ck3r
  • zzr0ck3r
:)
zzr0ck3r
  • zzr0ck3r
5+1/5 = 5 and 1/5 5^(-1) = 1/5
zzr0ck3r
  • zzr0ck3r
hence "the answer is stairing you in the face"
anonymous
  • anonymous
OH.... so its 5+1/5 not 5 1/5... i was thinking something differently.. thanks
anonymous
  • anonymous
s othe answer is 5 or 1/5 hahaha
anonymous
  • anonymous
So there is no real calculation needed for this question?
UnkleRhaukus
  • UnkleRhaukus
\[x+\frac 1x=5~\frac 15\]\[\frac {x^2+1}x=\frac {26}5\]\[x^2+1=\left(\frac {26}5\right)x\]\[x^2-\left(\frac{26}5\right)x+1=0\] \[x_{1,2}=\frac{-(-\frac{26}5)\pm\sqrt{(-\frac{26}5)^2-4}}{2}\]\[\qquad=\frac{\frac{26}5\pm\sqrt{\frac{676}{25}-4}}{2}\]\[\quad=\quad...\]
anonymous
  • anonymous
x+ 5/26

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