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steph2132sc1 steph2132sc1
  • 28-07-2016
  • Mathematics
Answered

Find the 7th term of the geometric sequence with the given terms.


a4 = -8 and a5 = -40; a7 = _______.

Verified Answer :

toporc
toporc toporc
  • 28-07-2016

The common ratio is the fifth term divided by the fourth term: -40/-8 = 5.
The seventh term is :
\(a_{7}=a_{5}\times5\times5=-40\times5\times5=-1000\)

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