CheemnCatelvew

2020-11-12

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

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 $d={a}_{2}-{a}_{1}$

$=40-80$

$=-40$

$d={a}_{3}-{a}_{2}$

$=20-40$

$=-20$ Since, the common difference d is not same. The sequence is not arithmetic.

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