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What is the value of y in the sequence below? 2,y,18,-54,162,...
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2 votes
What is the value of y in the sequence below?

2,y,18,-54,162,...

User Komu
by
4.5k points

2 Answers

0 votes

Answer:

A

Explanation:

User Abel Pastur
by
4.5k points
4 votes

Answer:

Explanation:

2,y,18,-54,162,...

This is a geometric sequence

Common ratio r = T2/T1 = T3/T2

y/2 = -54/18

Cross multiply

y(18) = 2(-54)

18y = - 108

y = -108/18

y = -6

User Asb
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4.4k points
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