Thursday

July 31, 2014

July 31, 2014

Posted by **Riana** on Tuesday, January 1, 2013 at 6:27pm.

arithmetic series question

- math -
**Reiny**, Tuesday, January 1, 2013 at 7:27pma+10d = 19

a+16d = 61

subtract them

6d = 42

d = 7

a + 70 = 19

a = -51

sum(12) = (12/2)(-102 + 11(7) ) = -150

**Related Questions**

Math - Is there a way to find the term number of a sum in an arithmetic series...

Math - Okay, so I know this should be really easy but my mind is just drawing a ...

Math - Two terms of an arithmetic sequence are t6=-3 and t11=-13. What is t20?

arithmetic - In an arithmetic series, the terms of the series are equally spread...

Math - I'm learning series and sequences (grade 11). Please check that my steps ...

math studies - An arithmetic series has a first term of -4 and a common ...

Math question - In an arithmetic series, the 15th term is 43 and the sum of the ...

Math - Using the index of a series as the domain and the value of the series as ...

ACT - In ACT math question do they ask boyt arithmetic sequence and series? ...

Algebra - In an arithmetic series, the terms of the series are equally spread ...