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timama [110]
3 years ago
9

HELPP ILL GIVE MAD POINT PLEASE

Mathematics
1 answer:
svet-max [94.6K]3 years ago
8 0
Since it is looking for the sum
at S3, replace n with 3 , 2, and 1 , solve the equation  and add all of answers together
 when s = 3 the equation becomes 5(1/3)^3-1
5(1/3)^2 = 5/9

when s = 2 the equation becomes 5(1/3)^2-1
5(1/3)^1 = 5/3

when s = 1 the equation becomes 5(1/3)^1-1
5(1/3)^0 = 5

5/9 + 5/3 + 5 =  65/9

the answer is the 3rd choice

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Answer:

Step-by-step explanation:

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Now try one by yourself.  If you want to see the answer, put your mouse on the yellow rectangle and the answer will appear.

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