SOLUTION: write each series below in sigma summation notation 5+15+25+35.................. 5+10+20+40+80.................... find the 10th term for b

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Question 306813: write each series below in sigma summation notation
5+15+25+35..................
5+10+20+40+80....................
find the 10th term for b
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
sum%285n%2C+n=1%2Cinfinity%29
sum%285%2A2%5E%28n-1%29%2C+n=1%2Cinfinity%29
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I assume b is the second series.
a10=5%2A2%5E%2810-1%29=5%2A2%5E9=5%2A512=2560