bm42400
contestada

Find the sum of the geometric series.
8-2+1/2-1/8+....

Please select the best answer from the choices provided

A
B
C
D

Respuesta :

Answer:

[tex]Sum=\frac{32}{5}=6.4[/tex]

Step-by-step explanation:

we are given geometric  series as

[tex]8-2+\frac{1}{2}-\frac{1}{8}+.......[/tex]

we can use infinite sum formula

[tex]sum=\frac{a}{1-r}[/tex]

where

a is first term

r is common ratio

so, we have

[tex]a=8[/tex]

[tex]r=\frac{-2}{8}[/tex]

[tex]r=-\frac{1}{4}[/tex]

now, we can plug values

[tex]sum=\frac{8}{1-(-\frac{1}{4})}[/tex]

[tex]Sum=\frac{32}{5}=6.4[/tex]