madulle1
contestada

please help guys, i’m so lost aaahhhh


Consider a geometric sequence with a first term of 4 and a fourth term of -2,916.

a. find the common ratio of this sequence.

b. find the sum to infinity of this sequence

Respuesta :

Answer:

Step-by-step explanation:

4r³=-2916

r³=-729

r=-9

b)s=[tex]\frac{4}{1+9}[/tex]

    =[tex]\frac{4}{10}[/tex]

    =[tex]\frac{2}{5}[/tex]