computerstuff121 computerstuff121
  • 20-04-2019
  • Mathematics
contestada

Determine whether the following sequence is arithmetic, geometric, or neither.

-7, -14, -28, -56, ...

A) arithmetic
B) geometric
C) neither

Respuesta :

jimrgrant1 jimrgrant1
  • 20-04-2019

Answer:

B

Step-by-step explanation:

A geometric sequence has a common ratio r between consecutive terms

r = [tex]\frac{a_{2} }{a_{1} }[/tex] = [tex]\frac{a_{3} }{a_{2} }[/tex] = ...

[tex]\frac{-14}{-7}[/tex] = 2

[tex]\frac{-28}{-14}[/tex] = 2

[tex]\frac{-56}{-28}[/tex] = 2

There is a common ratio of 2 between consecutive terms.

Hence sequence is geometric → B

Answer Link
meee328 meee328
  • 20-11-2020

Answer:

B. Geometric

Step-by-step explanation:

Answer Link

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