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Find x and y such that 27, , y, 1 is part of a) an arithmetic sequence. b) a geometric sequence.

Find x and y such that 27, , y, 1 is part of a) an arithmetic sequence. b) a geometric sequence.
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Find x and y such that 27, , y, 1 is part of a) an arithmetic sequence. b) a geometric sequence.

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User Fernando Ferreira
by
7.3k points

1 Answer

5 votes

Answer:

a) (27 + 1)/2 = 14, so y = 27 - 14 = 13

b) √27 = 3√3, so y = 3√3

answered
User Tim Lum
by
7.6k points
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