anonymous
  • anonymous
help me!!
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
with?
anonymous
  • anonymous
solve the inequality (9/x+1)>9
anonymous
  • anonymous
0

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More answers

anonymous
  • anonymous
thats not one of answer choices
Hero
  • Hero
ale5, you have not posted the equation correctly. There are two ways to interpret what you have posted.
Hero
  • Hero
I'll show you what i mean.
Hero
  • Hero
With the way you have posted it one person could interpret it as: |dw:1327171939658:dw| Another person could interpret it as: |dw:1327171974536:dw| Do you see the potential confusion here?
anonymous
  • anonymous
oh okay good. I was like it should be that I did it twice
Hero
  • Hero
cinar, you approach produces no solution
anonymous
  • anonymous
sorry if question is 9/(x+1)=9 then solution is -1
Hero
  • Hero
That isn't the question.
Hero
  • Hero
x = 1/63 is a solution so the actual solution appears to include fractions close to 0
anonymous
  • anonymous
\[\frac9{x+1}>9\] \[\frac9{x+1}-9>0\] \[\frac{9-9x-9}{x+1}>0\] \[\frac{-9x}{x+1}>0\] \[\frac x{x+1}<0\]
anonymous
  • anonymous
|dw:1327184116416:dw|
Hero
  • Hero
I don't believe that is the solution. 1/63 > 0
anonymous
  • anonymous
\[\frac9x+1>9\] \[\frac9x>8\] \[\frac{9-8x}{x}>0\]
anonymous
  • anonymous
|dw:1327184323364:dw|
Mertsj
  • Mertsj
have you guys noticed that you are a lot more interested in this problem than the asker is? He/she has disappeared.
Hero
  • Hero
I don't really pay attention to whether or not the original poster is here. I just care if the correct solution is presented.
anonymous
  • anonymous
cinar I already answered it with that but its not it according to the asker. and they probably just guessed.
anonymous
  • anonymous
I solved question either way..
anonymous
  • anonymous
0
Mertsj
  • Mertsj
Divide both sides by 9 and get that the reciprocal of x+1 >1. The only way that the reciprocal of a number is greater than 1 is if the number is <1 and >0 So 0
Mertsj
  • Mertsj
Another approach is to take the 2 cases Case 1 x+1>0 implies x>-1 and 9>9x+9 so 0>x Therefore -10 so this yields no solutions and Case 1 yields the only solutions.
anonymous
  • anonymous
x<9/8

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