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January 28, 2015

January 28, 2015

Posted by **Amir khan** on Sunday, September 25, 2011 at 7:34am.

2) Find the fifth term from the arithmetic progression -12, -9, -6 hence find the sum of it's first fifty terms.

3) The sum of the first terms in Arithmetic progression is equal to -24, and the sum of the last six terms equal to 30. if the number of it's term is 12. find a) it's common different

b) The first term

c) the last term

- maths -
**Anonymous**, Tuesday, January 24, 2012 at 4:09amAnswer

- maths -
**ari**, Thursday, January 30, 2014 at 2:40am3)a=-12

d=3

t(5)=a+(n-1)d

=-12+(5-1)3

=0

s(50)=3625

hope it would be a help. :)

- maths -
**Iddrisu Toarik**, Thursday, November 13, 2014 at 11:28amU2= a=8/9 U2=8/9 Un= arn-1 if n=2 U2= arn7-1 8/9=2(r6)

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