Thursday

December 18, 2014

December 18, 2014

Posted by **unknown** on Sunday, January 20, 2013 at 9:04am.

the 11th is y find the 1st 2 terms

- math -
**Reiny**, Sunday, January 20, 2013 at 9:51ama+5d = x

a+10d = y

subtract them

5d = y-x

d = (y-x)/5

and

a + 5(y-x)/5 = x

a + y - x = x

a = 2x - y

first two terms are:

t1 = 2x-y

t2 = 2x-y + (y-x)/5 = (10x - 5y + y-x)/5

= (9x - 6y)/5

**Answer this Question**

**Related Questions**

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

math - The third and seventh terms of an arithmetic sequence are 10 and 20. 1) ...

Math - first three terms of a geometric sequence are the same as the 1st, 9th ...

Can someone help me?! - The 1st, 5th and 13th terms of an arithmetic sequence ...

Math - 1. Find the 12th term of the arithmetic sequence 2, 6, 10, … . 2. Solve ...

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

mathematics - the 1st term of arithmetic series is 2 .the 1st ,3rd and 11th ...

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

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

arithmetic - THE SUM OF THE 2ND AND 5TH TERMS OF AN A.P IS 42. IF THE DIFFERENCE...