Determine whether the given sequence is arithmetic. If so, then find the common difference. 80, 40, 20, 10, 5,...

CheemnCatelvew

CheemnCatelvew

Answered question

2020-11-12

Determine whether the given sequence is arithmetic. If that is the case, then find the common difference. 80,40,20,10,5,...

Answer & Explanation

odgovoreh

odgovoreh

Skilled2020-11-13Added 107 answers

We have: The sequence, 80,40,20,10,5,... 

To verify that it is an arithmetic sequence, calculate the common difference d=a2a1 
=4080 
=40 
d=a3a2 
=2040 
=20 Since, the common difference d is not same. The sequence is not arithmetic.

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