Question

What the answer to this plz need help ASAP

Answer 1

A) 9841

Explanation:

Formula of geometric sequence:

`S_n=(a_1*(r^n-1))/(r-1) \\`

First, calculate the common ratio (r) of the sequence.

It can be calculated by dividing any term of the geometric sequence by the term preceding it.

`r = (27)/(9)\\ \\r=3`

Then

`Sum = (1(3^9-1))/(3-1) \\\\Sum = (3^9-1)/(2)\\ \\Sum=(19683-1)/(2) \\\\Sum = (19682)/(2) \\\\Sum=9841`