leslyandamado4ever leslyandamado4ever

Today at 9:25 PM
Mathematics

Answered

What is the common ratio of the sequence?
-2,6,-18,54

Answer :

mintuchoubay mintuchoubay

Today at 9:30 PM

Answer: Common ratio is -3

Step-by-step explanation:

Given series is geometric progression series : -2,6,-18,54..

Also, General geometric progression series is represented as a,ar,a[tex]r^{2}[/tex],a[tex]r^{3}[/tex]......

In order to find common ratio r, we will take ratio of second and first term

= [tex]\frac{ar^{2}}{a}[/tex]

=[tex]\frac{+6}{-2}[/tex]

=-3

Correct answer is -3

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