Answer:
The answer will be 12 please mark me as brainliest
a.
In order to find the common ratio, we just need to divide a term by the term that comes before it.
So using the terms 20 and -5, we have:
b.
The recursive rule can be found with the formula:
Where an is the nth term and q is the ratio. So we have:
c.
The explicit rule can be written as:
Where an is the nth term, a1 is the first term and q is the ratio. So:
It would be positive 4/3 or the inverse would be -3/4
Negative 1 / Square Root of 2