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AURORKA [14]
3 years ago
5

Which of the following are geometric series?

Mathematics
2 answers:
Temka [501]3 years ago
6 0

Answer:

-256 +64 - 16 + 4 - 1

Step-by-step explanation:

A series is the summation of all the terms in a sequence.

So it is only the last three options that qualify to be a series.

The series 2 +5 + 8 + 11 + 14 + 17 has no common ratio. It is not geometric.

The series 1+1+2+3+5+ 8 +13 +21 also has no common ratio. It is not geometric.

The series -256 +64 - 16 + 4 - 1 has a common ratio of

r=\frac{64}{-256}=-\frac{1}{4}

There the only series that is geometric is.

-256 +64 - 16 + 4 - 1

aleksklad [387]3 years ago
6 0

Answer:

A. and D.

Step-by-step explanation:

trust meeee

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