Answer:
4372
Step-by-step explanation:
Sn= [a1 (1 - r raised to n)] ÷ 1 - r
Sn= sum of the series
r= geometric ratio
n= number of terms
Sn= [4 ( 1 - 3 raised to 7)] ÷ 1 - 3
Sn= (4× -2186) ÷ -2
Sn= -8744 ÷ -2
Sn= 4372
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Answers & Comments
Answer:
4372
Step-by-step explanation:
Sn= [a1 (1 - r raised to n)] ÷ 1 - r
Sn= sum of the series
r= geometric ratio
n= number of terms
Sn= [4 ( 1 - 3 raised to 7)] ÷ 1 - 3
Sn= (4× -2186) ÷ -2
Sn= -8744 ÷ -2
Sn= 4372