Friday

November 28, 2014

November 28, 2014

Posted by **parth** on Wednesday, February 9, 2011 at 6:35am.

- arithmetic -
**Reiny**, Wednesday, February 9, 2011 at 9:55ama = 161

a+d = 154 , so d = -7

S(m) = (m/2)(2a + (m-1)d)

0 = m/2(322 - 7m+ 7)

329m - 7m^2=0

49m - m^2 = 0

m(49-m)=0

m = 49

**Answer this Question**

**Related Questions**

Maths - 1..The first 2 terms of a geometric progression are the same as the ...

arithmetic - Two arithmetic progression have thd same first and last terms.the ...

Arithmetic - The first, second and third terms of a geometric progression are 2k...

Math - A sequence is called an arithmetic progression of the rst order if the di...

maths - 1) The first term of arithmetic progression is -20 and the sum of it's ...

arithmetic - an arithmetic progression has 20 terms. the sum of all the even ...

arithmetic - In an arithmetic progression the sum of the first 10 terms is 50 ...

algebra 2 - An arithmetic progression has 5 terms that have a sum of 200. The ...

Algebra - Determine whether each sequence is arithmetic or geometric. Find the ...

Math - The sixth term of an arithmetic progression is 265 and the sum of the ...