What is the sum of the first 30 terms of this arithmetic sequence?
6, 13, 20, 27, 34, …
1 answer:
Answer:
3225
Step-by-step explanation:
The sum to n terms of an arithmetic sequence is
=
[ 2a + (n - 1)d ]
where a is the first term and d the common difference
here a = 6 and
d = 13 - 6 = 20 - 13 = 7, hence
=
[ (2 × 6) + (29 × 7) ]
= 15(12 + 203) = 15 × 215 = 3225
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Hi friend
3868000000 in scientific notation is : 3.868* 10^9
I hope that's help:) Please rate
If you have any further questions please let me know.Thx
okay, what numbers do you have to divide?
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