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Determine if the sequence below is arithmetic or geometric and determine the common difference / ratio in simplest form. 147, 21, 3, ... This is sequence and the is equal to​

Respuesta :

Answer:

geometric sequence

Step-by-step explanation:

an arithmetic sequence has a common difference d between consecutive terms.

21 - 147 ≠ 3 - 21

Hence the sequence is not arithmetic

A geometric sequence has a common ratio r between consecutive terms

[tex]\frac{21}{147}[/tex] = [tex]\frac{1}{7}[/tex] and [tex]\frac{3}{21}[/tex] = [tex]\frac{1}{7}[/tex]

there is a common ratio thus the sequence is geometric

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