anonymous
  • anonymous
I got x = -2.61 and 4.61 for the proporttion, x/x+ 12 = 1/x -1. Am I correct? I have no idea how to check.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
\[\frac{ x }{ x }+12=\frac{ 1 }{ x }-1\] Is that what your problem looked like? and you said that you got \[x=-2.61\] and this for the proportion? \[4.61\]
anonymous
  • anonymous
To check your answer you will plug in -2.61 or 4.61 for all x's in the equation
anonymous
  • anonymous
Yes, and also I feel that you might have messed up some where. Can you show what you did to figure out the answer?

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anonymous
  • anonymous
I cross multiplied x/x + 12 and 1/x-1
anonymous
  • anonymous
|dw:1073598553958:dw|
anonymous
  • anonymous
Look at it as \[13=\frac{ 1 }{ x }-1\] then reverse the inequality in order to isolate the x on the left hand side. \[13=\frac{ 1 }{ x }-1\rightarrow \frac{ 1 }{ x }-1=13\] Isolate the terms with x on the left side \[\frac{ 1 }{ x }=14\] and you should get \[x=\frac{ 1 }{ 14 }\]
anonymous
  • anonymous
Did that help?
anonymous
  • anonymous
no, i am still confused
anonymous
  • anonymous
Hmm. @Notamathgenius help this user so they're no longer confused .-.
Notamathgenius
  • Notamathgenius
Plug in the -2.61 for x
anonymous
  • anonymous
\[\frac{ 1 }{ -2.16 -1 }\frac{ -2.16 }{ -2.16 + 12 } \]
anonymous
  • anonymous
like so?
Notamathgenius
  • Notamathgenius
Yes

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