+0  
 
0
85
1
avatar

The 4th term of a geometric sequence is 18, and the 10th term is 162. What is the 7th term?

 Jun 23, 2022
 #1
avatar+124676 
+1

The 10th term  =   

 

18 * r^6 =  162

 

r^6  = 162 / 18  =  9                take the 9th root

 

r=  9^(1/6)

 

The 7th term is

 

18 * r^3  =

 

18 * (9^(1/6))^3  = 

 

18  *  (9)^(1/2)  =

 

18 * 3  =  

 

54

 

cool cool cool

 Jun 23, 2022

37 Online Users

avatar
avatar
avatar