Question

What is the value of the fourth term in a geometric sequence for which a =
10 and r=0.5?

Answer 1

The fourth term is equal to 5/4

Explanation:

geometric sequence

`a_n=a_1.r^(n-1)`

`a_4=a_1.r^(3)\\\\a_4=10.(1)/(2) ^(3)=(5)/(4) \\\\`

Answer 2

for a pex it need to be a decimal so it’s 1.25