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sabon
16.07.2019 •
Mathematics
What is the sum of the first five terms in a geometric sequence with a1 = 6 and r=1/3
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Ответ:
1. You have that a1=6 and r=1/3, therefore you must apply the following formula:
Sn=a(1-r^n)/1-r
2. When you substitute the values shown above, you obtain:
S5=6(1-(1/3)^5)/(1-(1/3))
S5=242/27
Therefore, the answer is 242/27
Ответ:
y=-20,:x=-2
PLEASE MARK BRAINLIEST