+0  
 
0
82
1
avatar

Find the sum of the first 100 terms of the arithmetic sequence with the first term 2 and the common difference 5.

 Feb 3, 2021
 #1
avatar+118470 
+1

First term  =    2

 

100th  term   =    2 + 5(100 - 1)   =  2 + 5(99)   =   497

 

Sum  =

 

[first term  +  100th term ]   * ( number of terms)  / 2   =

 

[ 2  + 497  ]  / (100)  /2   =

 

499 *  50    = 

 

24950

 

 

cool cool cool

 Feb 3, 2021

20 Online Users

avatar
avatar