Answer:
12 i don't really know sorry ;-;..................
Step-by-step explanation:
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Answer:
Step-by-step explanation:
The given series is a geometric series because the consecutive terms differ by a common ratio. The formula for determining the sum of the first n terms, Sn of a geometric sequence is expressed as
Sn = (ar^n - 1)/(r - 1)
Where
n represents the number of term in the sequence.
a represents the first term in the sequence.
r represents the common ratio.
From the information given,
a = 3
r = 6/3 = 12/6 = 2
n = 15
Therefore, the sum of the first 15 terms, S15 is
S15 = (3 × 2^(15) - 1)/2 - 1
S15 = (3 × 32767)/1
S15 = 98301
Answer: I think it’s 18?
Step-by-step explanation:
Answer:
its in the 1,000 place
Step-by-step explanation:
Answer:
250, -1250
Step-by-step explanation:
Geometric Sequence is a hint to think multiplication:
What can you multiply to -2 to get 10
or what is 10/-2
I hope you said -5.
So just multiply -5 to a term to get the term right after!
So
-50(-5)=250
250(-5)=-1250