princessajh
princessajh princessajh
  • 16-05-2017
  • Mathematics
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Find the sum of a Finite arithmetic sequence n=1 to n=18 using the expression 4n-10

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peterdaly
peterdaly peterdaly
  • 26-05-2017
Find the sum of a Finite arithmetic sequence n=1 to n=18 using the expression 4n-10. The sum is 442 using the formula 4n-10 and substituting the n values and then adding up the results arithmetically and finding that the values go up by 4 each time. The first two values are -6 and -2 and then the values are positive after that.
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