anonymous
  • anonymous
find the sum of the infinite geometric series, if it exists. -30 -6 -6/5 -6/25 -.....
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
is it times 5? do not exist is an answer choice
anonymous
  • anonymous
does not exist*
anonymous
  • anonymous
r is not 5, it's 1/5 (dividing by 5 = multiplying by 1/5). \[S_n=\frac{ a_1 }{ 1-r }\]

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anonymous
  • anonymous
a_1 is the first term and r is 1/5
anonymous
  • anonymous
a_1=-30 a_2= -30/1-1/5?
anonymous
  • anonymous
\(\frac{ -30 }{ 1-\frac{ 1 }{ 5 } }\) is the sum of the series. you don't need any term other than the first one. All you have to do is simplify that to one number
anonymous
  • anonymous
37.5 = -75/2
anonymous
  • anonymous
that's the answer
anonymous
  • anonymous
ok cool thank you!
anonymous
  • anonymous
you're welcome

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