SOLUTION: Consider a geometric sequence whose third term is 9 and whose sixth term is −8/3. What is its first term? (Enter a number only)

Algebra ->  Sequences-and-series -> SOLUTION: Consider a geometric sequence whose third term is 9 and whose sixth term is −8/3. What is its first term? (Enter a number only)      Log On

 = 9 = ,

 = = ,


==========>   =  =  = 

==========>   =  = 

==========>  r =  = 


==========>  9 =  =  = 

==========>  a =  = 4.


Answer.  a =  = 4.