Determine whether the sequence 5,1,0.2,0.04,... is geometric and if it is, what is the common ratio

Deanna Gregory

Deanna Gregory

Answered question

2022-09-30

Determine whether the sequence 5,1,0.2,0.04,... is geometric and if it is, what is the common ratio

Answer & Explanation

Clare Acosta

Clare Acosta

Beginner2022-10-01Added 7 answers

5 , 1 , 0.2 , 0.04 a 1 = 5 ; a 2 = 1 , a 3 = 0.2 , a 4 = 0.04 ... .
For Geometric progression a 2 a 1 = a 3 a 2 = a 4 a 3 = constant
Here a 2 a 1 = 1 5 = 0.2 , a 3 a 2 = 0.2 1 = 0.2 ,
a 4 a 3 = 0.04 0.2 = 0.2 . This constant (0.2) is called common
ratio. This is geometric progression and common raio is 0.2

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