Question

Which formula can be used to describe the sequence below? 29, 9, 3, 1, 1/3,.....

Answer 1

Answer:

Answer is   $3^{4-n}$

Step-by-step explanation:

It is 29 in place of 27 . and Its a geometric series with first term 27 and common ratio $\frac{1}{3}$

and  general formula for  given sequence is given by  $a (r)^{n-1}$

so plugging the value of a and r ,we get

   $27 ([tex]\frac{1}{3}$)^{n-1}[/tex]

   $3^3(\frac{1}{3} )}^{n-1}$

      $3^{4-n}$