SOLUTION: the sum to n terms of a sequence of numbers is given as Sn=n/2(5n+9).
1.calculate the sum to 23 terms of the sequence
2.calculate the 23rd term
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Question 864382: the sum to n terms of a sequence of numbers is given as Sn=n/2(5n+9).
1.calculate the sum to 23 terms of the sequence
2.calculate the 23rd term
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
Sn=n/2(5n+9)
S23=23/2(5*23+9)
S23 = 1426
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