itisapocalypse54 itisapocalypse54

22-03-2018
Mathematics

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In this geometric sequence, what is the common ratio?
104, -52, 26, -13, ...

A 2
B -2
C 1/2
D -1/2

Respuesta :

22-03-2018

Hi there! The correct answer is D. -1/2

104 × -1/2 = -52
-52 × -1/2 = 26
26 × -1/2 = -13
...

Each time you multiply the preceding number by -1/2. Therefore the common ratio in this sequence is -1/2

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