soup6 soup6
  • 17-06-2017
  • Mathematics
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Pliz help me on this one need help pliz

Pliz help me on this one need help pliz class=

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leeyah188
leeyah188 leeyah188
  • 17-06-2017
You could make an equation using the arithmetic sequence. Which is, a(n)=a(1)+(n-1)(d)

Plug in the given information.

a(n)=1+(n-1)(-1/3)

with our constructed equation, we could now find any term.

a(9)=1+(9-1)(-1/3)

a(9)=-5/3

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