TheTankProdJun 11 2012, 08:56 PMokay i'm not dumb or anything because i did this before but my fuckin teacher lost my work so now i have to re-do it 3 months later now i've forgotten, so wondering if anyone in DV is a bamf and can help me out, ill list the questions below, only 3 questions so nothing too much :PArithmetic Series----------------the nth term is a+(n-1)dthe sum (or total) of n terms is n/2{2a+(n-1)d)Geometric Series----------------nth term = arn-1sum of n terms = a(1-rN)/1-r1) find the 8th term of each of these sequencesa) 2,5,8,11b) 3,7,11,15c) 2,10,50,250d) 2,6,18,542) find the sum of the first 10 terms of the following seriesa)3,8,13,18b)1,3,9,273) the first term of an arithmetic series is 1. the common difference is 6 find the 10th term of the series, the sum of the first N terms is 7400 find Nif anyone can help me with this ill be greatly appreciated and i'll owe you one big time ;)
Quote: a)3,8,13,18 arithmetic 10/2(3+(10-1)*5) =240
NicoJun 11 2012, 09:38 PMso playing runescape is now proven to be beneficial to education!
TheTankProdJun 11 2012, 11:13 PMtbh matt, wen i made this post the first two people i was expecting to solve this was either you or damo, (that's a compliment) thanks for your help owe you one ;)