anonymous
  • anonymous
if the sum of a number and 9 is tripled, the result is 8 less than twice the number. what is the number?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
(x + 9) ^3 < 8(2x) x^3 + 27x^2 +243x + 729 < 16x x^3 + 27x^2 + 227x + 729 < 0
anonymous
  • anonymous
oops
anonymous
  • anonymous
(x+9)^3 < 2x - 8

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anonymous
  • anonymous
so, it would be negative 19 right?
anonymous
  • anonymous
x^3 + 27x^2 + 243x + 729 < 2x - 8 x^3 + 27x^2 + 241x + 737 < 0
anonymous
  • anonymous
OK WOW i obviously dont know pellet haha 3(x + 9) < 2x - 8 -19 < x
anonymous
  • anonymous
pellet haha x<-19
anonymous
  • anonymous
pretty sure i had the wrong answer too. because -19 doesn't check so that's not right either. hmm.
anonymous
  • anonymous
no x < -35
anonymous
  • anonymous
try that
anonymous
  • anonymous
its the algebra 3x + 27 < 2x - 8 x < -35
anonymous
  • anonymous
no pellet no it totally is -19
anonymous
  • anonymous
it's actually -43
anonymous
  • anonymous
haha flutter its -35. im going to stop responding now. try any number greater than -35
anonymous
  • anonymous
-43. thanks for trying to help though =p
anonymous
  • anonymous
haha i just did the math three times and i got -35
anonymous
  • anonymous
hmm..well i will be able to see if it's right in a minute.

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