The fifth through the eighth terms of a geometric sequence are given by a5 = 80, a6 = 160, a7 = 320, a8 = 640. Which formula can be used to find an?

hlo I am ram and my frn is shyam how are you I am also fine here

4

step-by-step explanation:

im pretty sure it's 4 beacsue 8/2 equals 4

first, you divide the triangle in two, tô form a retangle triangle. after, using pythagoream theorem:

18^2 = 14^2 + (x/2)^2

(x^2/4) + 196 = 324

x^2/4 = 324 - 196

x^2/4 = 128

x^2 = 512

x = √512

x = √2^9

x = 16√2 cm

i hope i you.