✅✅✅✅✅MATH✅✅✅✅✅ GCf of 90 & 45 Whats 7 divided by 3/5
2 answers:
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Answer:
Step-by-step explanation:
You know that the formula to find the sum of a finite geometric series is:
Where is the number of terms,
is the first term and
is the common ratio (
).
The steps to find the sum of the first 12 terms of the given geometric serie, are:
1. Find the common ratio "r". By definition:
Then:
2. Finally, knowing that:
You must substitute values into the formula.
Then you get: