Saturday

March 28, 2015

March 28, 2015

Posted by **bob** on Wednesday, August 11, 2010 at 5:40pm.

What is the first term of the sequence?

explain how to do this please

- arithmetic -
**Reiny**, Wednesday, August 11, 2010 at 6:37pmyou know t6 = a+5d

you know t15 = a+14d

so a+5d + a+14d = -141

don't you know d= -7 ???

take over ....

**Answer this Question**

**Related Questions**

Algebra - True or False 1. – 5, – 5, – 5, – 5, – 5, … is an arithmetic sequence...

Arithmetic - t6 + t15 = -141 and the common difference is -7. What is the first ...

Math - A sequence is formed by adding together the corresponding terms of a ...

math - The 3rd term in an arithmetic sequence is 12, the 7th term is 24, a) How...

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

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

Mathematics : Arithmetic Sequence - The 5th term and the 8th term of an ...

math - in an arithmetic sequence the common difference is equal to 2.the first ...

math - what are the similarities and differences between an arithmetic sequence ...

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