Friday

February 27, 2015

February 27, 2015

Posted by **esa** on Thursday, January 19, 2012 at 11:57am.

- arithmetic -
**Reiny**, Thursday, January 19, 2012 at 12:55pma + 3d + a + 7d = 10

2a + 10d = 10

a + 5d = 5

a+5d + a+11d = 22

2a + 16d = 22

a + 8d = 11

subtract them

3d = 6

d = 2

back into the first

a + 5d = 5

a + 10 = 5

a = -5

first 3 terms are -5, -3, -1

**Answer this Question**

**Related Questions**

10th math - The sum of the 4th and 8th terms of an AP is 24 and the sum of the ...

maths - the sum of the 4th and 6th terms of an A.P is 42. the sum of the 3rd and...

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

Math - 1) If the sum of the first n terms of a series is Sn where Sn=2nē-n, (a)...

math - 1) If the sum of the first n terms of a series is Sn where Sn=2nē-n, (a)...

Math - Sum of4th and the 6th terms of an a,p is 42 . While the sum of the 3rd ...

Geometric - 1) The sum of last three terms of GP having n terms is 1024 time the...

Further mathematics - An exponential sequence (GP)of positive terms and a linear...

Maths - 1) In the arithmetic progression, the 8th term is twice the 4th term and...

Further mathematics - An exponential sequence of positive terms and a linear ...