Posted by **Nina** on Sunday, September 30, 2012 at 5:31am.

Given the third term of an arithmetic sequence less than the fourth term by three. The seventh term is two times the fifth term. Find the common difference and the first term.

- Arithmetic Sequence -
**Steve**, Sunday, September 30, 2012 at 7:47am
since the terms have a constant difference, the difference is 3.

a+6*3 = 2(a+4*3)

a+18 = 2a+24

a = -6

sequence is -6,-3,0,3,6,9,12,15,18,21,24

T7 = 12 = 2*6 = 2T5

- Arithmetic Sequence -
**UNKNOWN**, Wednesday, December 17, 2014 at 9:36pm
I CANT GET IT. PLS LIST DOWN ALL THE SOLUTIONS ONE BY ONE. SO THAT I CAN UNDERSTAND. THANK YOU SO MUCH!!!

- Arithmetic Sequence -
**UNKNOWN**, Wednesday, December 17, 2014 at 9:38pm
ANYONE? PLS HELP ME! MY FRIEND A.K.A MY ROOMATE NEED TO SOLVE THIS QUEST ASAP. THANKYOUUUUUU 😘

- Arithmetic Sequence -
**rrrr**, Sunday, October 4, 2015 at 1:29am
rrrrrrrrrrrrr

## Answer This Question

## Related Questions

- Algebra - True or False 1. – 5, – 5, – 5, – 5, – 5, … is an arithmetic sequence...
- Math - The fifth term of an arithmetic progression is three times the second ...
- math - the fourth term of an arithmetic progression is equal to 3 times the ...
- mathematics - 1.1 the third term of an arithmetic sequence is 8 and the 15 term ...
- Precalculus - The 8th term in an arithmetic sequence is 5, and the sum of the ...
- Math - A sequence is formed by adding together the corresponding terms of a ...
- math - find the rule for the Nth term of the arithmetic sequence. 11/2, 25/6, 17...
- 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 ...
- Precalculus - 1. In an arithmetic sequence, the fifth term, u5, is greater than ...

More Related Questions