Question

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

Answer 1

Answer:

The fourth term is equal to 5/4

Step-by-step explanation:

geometric sequence

$a_n=a_1.r^{n-1}$

$a_4=a_1.r^{3}\\\\a_4=10.\frac{1}{2} ^{3}=\frac{5}{4}$

Answer 2

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