SOLUTION: Evaluate each arithmetic series described. A1=3/2 d=1/2 n=50

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Question 1083476: Evaluate each arithmetic series described.
A1=3/2 d=1/2 n=50
Found 2 solutions by KMST, MathTherapy:
Answer by KMST(5328) About Me  (Show Source):
You can put this solution on YOUR website!
A1=3/2 , d=1/2
A50=A1+(50-1)×d=3/2+49×(1/2)=1+1/2+49×(1/2)=1+(49+1)×(1/2)=1+50×(1/2)=1+25=26.
A1+A2+A3+....+A50=50×(A1+A50)/2=25×(3/2+26)=25×(3/2+52/2)=25×55/2=1375/2=687.5

Answer by MathTherapy(10555) About Me  (Show Source):
You can put this solution on YOUR website!

Evaluate each arithmetic series described.
A1=3/2 d=1/2 n=50
a%5Bn%5D+=+a%5B1%5D+%2B+%28n+-+1%29d