Question

The first term of a geometric sequence is 512

and the common ratio is 1/2 what is the
8th term?

Answer 1

Explanation:

hello :

the n-ieme term is : An=A1×r^(n-1)

A1 the first term r : the common ratio

in this exercice : A1 =512 r = 1/2 n = 8

A8=512×(1/2)^(8-1) = 512×(1/2)^7