Twenty four plus (negative nine) minus forty-four plus thirty three minus seventeen.
Answer: The equation doesn't look right, it's either there's too many symbols or you need to switch some things around.
Step-by-step explanation:
Answer:

Step-by-step explanation:
We have a geometric sequence with:
,
, and 
Where
Sn is the sum of the sequence
r is the common ratio
is the first term in the sequence
n is the number of terms in the sequence
The formula to calculate the sum of a finite geometric sequence is:

Then:

Now we solve for 


1. 1/a^8 (Sorry I can't find out what the others are)
Answer:
504
Step-by-step explanation:
In the attached file
Hope it helps