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:
Step-by-step explanation:
app it's a standard 30 60 90 triangle. there are rules for this.
x = 3
y = 6
Answer: the 1 is > the one below it is < the one next to it unknown
and the one next to it is > and the last one is =
branliyist please
Step-by-step explanation:
Answer:
48sq^2
Step-by-step explanation:
(12*8)/2
96/2
48