Identifying Geometric Sequences Which sequences are geometric? Check all that apply. 10, 7.5, 5.625, 4.21875, ... 160, 40, 10, 2.5, ... 20, 70, 245, 857.5, ... 13, 16.5, 20, 23.5, ... 5, 5.5, 6.05, 6.655, ... 16, 17.1, 18.2, 19.3, ...

Question

Mathematics

Hebert

14 November, 14:06

Identifying Geometric Sequences Which sequences are geometric? Check all that apply. 10, 7.5, 5.625, 4.21875, ... 160, 40, 10, 2.5, ... 20, 70, 245, 857.5, ... 13, 16.5, 20, 23.5, ... 5, 5.5, 6.05, 6.655, ... 16, 17.1, 18.2, 19.3, ...

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Ronin Ward · Answer 1

Geometric means you multiply to get the next number.

The first one is geometric with r = 3/4

The second one is with r = 1/4.

The third one is with r=3.5

The fourth is NOT.

The fifth one is with r=1.1

The sixth is NOT