steph2132sc1 steph2132sc1
  • 29-07-2016
  • Mathematics
contestada

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

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

Respuesta :

toporc
toporc toporc
  • 29-07-2016
The common ratio is the fifth term divided by the fourth term: -40/-8 = 5.
The seventh term is :
[tex]a_{7}=a_{5}\times5\times5=-40\times5\times5=-1000[/tex]
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