+0  
 
0
49
3
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Can someone please help me ASAP? I can only take this once

 Jan 27, 2020
 #1
avatar+20254 
+2

There is only 5 terms  ( i = 1   2    3    4   5 ),  so let's just expand it out

 

 

3 (1)  + 3 (2)  + 3 (3)  + 3 (4)  + 3 (5)   =            You can do the rest !

 Jan 27, 2020
 #2
avatar
0

so the answer would be 45?

Guest Jan 27, 2020
 #3
avatar+20254 
+1

yes.....

ElectricPavlov  Jan 27, 2020

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