Question

What is the common ratio of the following sequence?
7,-7,7, -7....

Answer 1

Answer:

7,-7,7, -7

Step-by-step explanation:

its a patten that is repeated with no change

i hope i have helped

Answer 2

Answer:

-1

Step-by-step explanation:

$a_1=7\\a_2=-7\\a_3=7\\a_4=-7\\\vdots\\a_n=(-1)^{n+1}(7)\\\\\text{The common ratio is}\ r=-1$

$r=\dfrac{a_{n+1}}{n}$

$\dfrac{a_4}{a_3}=\dfrac{-7}{7}=-1\\\\\dfrac{a_3}{a_2}=\dfrac{7}{-7}=-1\\\\\dfrac{a_2}{a_1}=\dfrac{-7}{7}=-1$