CHECK MY ANSWERS PLEASE The sequence is geometric: 3, 13, 23, 33,... True False* _________________ The sequence is geometric: 5, -25, 125, -625,... True* False

Question

asked Jan 22, 2022 223k views

1 Answer

Pedro Serra · Answer 1 · 2022-01-26T14:47:11+0000

Answer:

1. False 2. True

Explanation:

For a geometric sequence,

(a_2)/(a_1)=(a_3)/(a_2)

1. The sequence is :

3, 13, 23, 33,...

$(13)/(3)\\e (23)/(13)$

It is not geometric. It is false

2. The sequence is :

5, -25, 125, -625

$(-25)/(5)=(125)/(-25)\\\\-5=-5$

So, the sequence is geometric as the common ratio is same. It is true.