[SPLIT] Summation Help required

jade91

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Joined
Apr 16, 2014
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3
Hello i was given the attached question but cant seem to get it right i know the correct answer but am unable to get to it if anyone could lend a hand id really appreciate it.
 

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You've been provided with a formula and with the values to plug into that formula. Where are you getting stuck? Please be complete. Thank you! ;)
 
This is how i completed it but the correct answer isn't zero
 

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never mind I figured out what I was doing wrong I was supposed to do it on a more individual scale, its always the little things in math you do wrong. Thankyou anyway you were very helpful.:)
 
Glad you were able to figure it out. Good for you! ;)
 
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