daemonacoster
18.01.2022 •
Mathematics
Find the sum of the first 7 terms of the
following sequence.
Round to the nearest
hundredth if necessary.
6,-10 ,50/3
Sum of a finite geometric series:
sn = a1-a1rn /1-r
Solved
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Ответ:
20078/243
Step-by-step explanation:
sn = a1-a1r^n/1-r
sn = a1 * 1-r^n/1-r
s7 = 6 * 1 - (-5/3)^7/1-(-5/3)
s7 = 6 * 10039/729
s7 = 6 * 10039/243*3
s7 = 2 * 10039/243
s7 = 20078/243
Ответ:
Hope this helps! :)