SOLUTION: Im sorry but I dont know if this question is in the right section! I am trying to work out ∑ notation questions and failing miserably! Trying to find the values of x :

Algebra ->  Numeric Fractions Calculators, Lesson and Practice -> SOLUTION: Im sorry but I dont know if this question is in the right section! I am trying to work out ∑ notation questions and failing miserably! Trying to find the values of x :      Log On


   

Question 469038: Im sorry but I dont know if this question is in the right section!
I am trying to work out ∑ notation questions and failing miserably!
Trying to find the values of x : 15, 16, 16, 18, 20, 25, calculate
i) ∑x
ii)(∑x)2
iii)∑x2
Any help appreciated!
Answer by Tatiana_Stebko(1539) About Me  (Show Source):