+0  
 
0
47
1
avatar

An infinite geometric series has common ratio -1/5 and sum 16. What is the first term of the series?

 Mar 29, 2020
 #1
avatar
0

Sum =F / (1 - r)

 

16 =F / (1 - ( -1/5)), solve for F

16 = 5F / 6

5F =6 x 16

5F =96

F =96 / 5 - First Term

 Mar 29, 2020

21 Online Users

avatar
avatar
avatar
avatar
avatar