ANSWER

EXPLANATION
The sum of the first
terms of a geometric sequence is given by;

Where
, is the number of terms and
is the first term.
When
, we have
, we get;





It’s the first one
x = -12 or x=2
Answer:
-1,-3,-9,-27,-81,-243...
Step-by-step explanation:
Answer:
11/20
Step-by-step explanation:
simplify 22/40
Answer:it is 2
Step-by-step explanation: