text: # algebra 2
  
  posted by .
  
  what is the 6th term of the geometric sequence 2000, 800, 320,..../
  
  • algebra 2 -
  
  Start by taking the ratio of 800/2000
  reduce it to 2/5 or .4
  
  multiply 800 times .4 = 320
  
  next multiply 320 times .4
  and continue until you get to the 6th term.
  
  • algebra 2 -
  
  you could do that, or just use the formula for the
  nth term of a GS, which is ar^(n-1)
  
  6th term = 2000(.4)^5 = 20.48
  
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