162 water bottles in 9 cases
2 answers:
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Since the sequence is arithmetic, we have an expression of the form:
Where,
a1: first term of the sequence
d: common difference
n: number of terms
We look for the common difference:
Then, setting values we have:
Then, the sum of the terms is:
Substituting values:
Answer:
the sum of the arithmetic sequence 8, 15, 22 is:
Sn = 2483
Where,
a1: first term of the sequence
d: common difference
n: number of terms
We look for the common difference:
Then, setting values we have:
Then, the sum of the terms is:
Substituting values:
Answer:
the sum of the arithmetic sequence 8, 15, 22 is:
Sn = 2483