Braillegentilesidn
Answered

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which of the following is an arithmetic sequence
a)1,3,9,27,81,...
b)3,6,8,9,11,...
c)1,-1,1,-11...
d)5,8,11,14,17,20,...​

Sagot :

AidenSRreoidn

Answer

The answer is D.

Explanation

If you observe the sequence, there is a difference of 3 between each of the corresponding terms, and this difference remains continuous for the rest of the given. For example, we can get 3 by subtracting 8 and 5. Even if we deduct 11 and 8, the difference remains at 3. This is because this sequence contains this formula: an = 3n + 2, proving that the sequence on letter D is indeed an example of an arithmetic sequence.

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