please help me please!!! Math
posted by Jnr John .
Find a6 for an arithmetic sequence where a1=3x+1 and d=2x+6 . I can't even solve it because I do not have any idea.

in an arithmetic sequence
term(n) = a + (n1)d
inyour case a = 3x+1
d = 2x+6
term(6) = a + 5d
= 3x+1 + 5(2x+6)
= 3x+1 + 10x + 30
= 13x + 31
Respond to this Question
Similar Questions

Mathematics : Arithmetic Sequence
The 5th term and the 8th term of an arithmetic sequence are 18 and 27 respctively. a)Find the 1st term and the common difference of the arithmetic sequence. b)Find the general term of the arithmetic sequence. 
arithmetic
I have a Q that im trying to solve: it says: the 1st , 2nd, and 3rd term of a geo. sequence is the same as the 1st, 7th and 9th terms of an arith. sequence.: I have to find the common ratio. So i know: a+8d = a(r^2) (1) a+6d = ar (2) … 
algebra
can you check my answers please? What are the first three terms of the sequence: a1 = 3 and an = 2(an1)2? 
Math
A sequence is formed by adding together the corresponding terms of a geometric sequence and and an arithmetic sequence.The common ratio of the geometric sequence is 2 and the common difference of the arithmetic sequence is 2.The first … 
Math
I'm learning series and sequences (grade 11). Please check that my steps show I understand what I'm doing/the concept and my answer as well: 5. The consecutive terms of an arithmetic sequences are 3.6, y, 8.2. Find the value of y. … 
Math
Find the no. of terms 1. 3,5,7...33 2.5,1,3,...75 Solve each problem. 1. In the Arithmetic sequence 5,8,11,14.... what is n if a sub n is 32? 
Math
Please help. 51. Solve: 125=(x3)/0.3^3 a.7 b.14 c.15 d.9 53. 49x2 = 7Ö 7 a.5/4 b.5/4 c.11/4 d.11/4 60. Simplify: 2log^3 6  log^3 4 a.3 b.6 c.4 d.2 61. Solve the equation: logb (x^2 + 7) = 2/3logb 64 a.9 b.3 c. √23 d. ±3 … 
Arithmetic Sequence Help!
The sum of 3 consecutive terms of an arithmetic sequence is 165. The second of these terms is 11 times the first. Find the 3 terms From what I gathered: S(3) = 165 t(2)= 11(t1) The given formulas are: Sn= n/2[2a+(n1)d] and tn=a+(n1)d … 
Algebra
True or False 1. – 5, – 5, – 5, – 5, – 5, … is an arithmetic sequence. 2. In an arithmetic sequence, it is possible that the 13th term is equal to its 53rd term. 3. In an arithmetic sequence, the common difference is computed … 
Math
Which explains why the sequence 64, 4, 1/4,... is arithmetic or geometric?