Determine whether each sequence is geometric?
1) 60,48,36,24,12,…
2) 3,6,12,24,48,…

Answers:

Explanation for problem 1

Divide each term over its previous term.

We can stop here. The two results 0.8 and 0.75 do not match up, so we don't have a common ratio. Therefore, this sequence is not geometric. A geometric sequence must have each ratio of adjacent terms to be the same value throughout the list of numbers.

Side note: This sequence is arithmetic because we are subtracting the same amount each time (12) to generate each new term.

Explanation for problem 2

Like before, we'll divide each term by its previous term.

Each ratio found was 2. This is the common ratio and it shows we have a geometric sequence. It indicates that each term is twice that of its previous term. Eg: the jump from 12 to 24 is "times 2".

answer: a and b

step-by-step explanation:

the answer is c

hope this !