Answer:
Step-by-step explanation:
some off this is a tranggle
Answer:
2:9 4:8
8:3 24:6
9:7 3:2
18:15 6:6
18:12 12:16
10:40 5:9
12:16 6:7
12:36 12:18
45:15 4:5
those in bold are the answer
<u>ANSWER</u>
The common ratio is -3.
<u>EXPLANATION</u>
In general, the common ratio of a Geometric Sequence is given by:
![r = \frac{a_{n+1}}{a_{n}}](https://tex.z-dn.net/?f=%20r%20%3D%20%5Cfrac%7Ba_%7Bn%2B1%7D%7D%7Ba_%7Bn%7D%7D%20)
We can find the common ratio using any two consecutive terms of the geometric sequence by dividing the subsequent term by the previous term.
The given sequence is -2,6,-18,54
Using the first two terms the common ratio is
![r = \frac{6}{ - 2} = - 3](https://tex.z-dn.net/?f=r%20%3D%20%20%5Cfrac%7B6%7D%7B%20-%202%7D%20%20%3D%20%20-%203)
We could also used the second and third terms to get
![r = \frac{ - 18}{6} = - 3](https://tex.z-dn.net/?f=r%20%3D%20%20%5Cfrac%7B%20-%2018%7D%7B6%7D%20%20%3D%20%20-%203)
and so on and so forth.
Therefore the common ratio is -3.
Answer:
1. 195=6.50·c
2. 30
Step-by-step explanation:
195=6.5·c
Divide both sides by 6.5
30=c