Use the formula for the general term (the nth term) of a geometric sequence to find a(sub5) with the given first term a(sub1)=9, and a common ratio, r=5sub=subscript

Use the formula for the general term the nth term of a geometric sequence to find asub5 with the given first term asub19 and a common ratio r5subsubscript class=

Respuesta :

The general expression for the n terms :

[tex]a_n=a_1r^{n-1}[/tex]

From the given data :

first term = 9, Common Ratio: r = 5

we need to find the fifth term : n = 5

Substitute the given value in the expression for