The first term of a geometric sequence is 320, and the common ratio is 0.5. What is the 5th term of the sequence?

May 7, 2016

The general term of a geometric sequence is given by ${t}_{n} = a \times {r}^{n - 1}$

Explanation:

In this case, $n = 5 , r = 0.5 \mathmr{and} a = 320$

${t}_{5} = 320 \times {0.5}^{5 - 1}$

${t}_{5} = 20$

Hopefully this helps!