SOLUTION: The arithmetic sequence x,2x-20,3x-28,... has D1=-16. What is the formula for the nth term ? I said tn= -16+12 but was marked wrong :(

SOLUTION: The arithmetic sequence x,2x-20,3x-28,... has D1=-16. What is the formula for the nth term ? I said tn= -16+12 but was marked wrong :(

Algebra.Com

Question 118445: The arithmetic sequence x,2x-20,3x-28,... has D1=-16. What is the formula for the nth term ?
I said tn= -16+12 but was marked wrong :(
Answer by Nate(3500) (Show Source): You can put this solution on YOUR website!
Second term - First = d
2x - 20 - x = d
x - 20 = d
The sequence is not arithmetic ...
RELATED QUESTIONS
write a rule for the nth term of the arithmetic sequence 2,9,16,23,30...What is... (answered by richwmiller)

Using the formula for the nth term of an arithmetic sequence, what is 101st... (answered by stanbon)

Find the nth term formula for the arithmetic sequence;... (answered by Alan3354)

Find the nth term formula for the arithmetic sequence;... (answered by scott8148)

Find the nth term formula for the arithmetic sequence:... (answered by ewatrrr)

``write the first six terms of the sequence 2. an=(n+1)^3 4. an=n/n+3 write the... (answered by CubeyThePenguin)

i have selected 10 problems i am having trouble with if anyone could PLEASE help i would... (answered by stanbon)

I need some help with this question- I missed the unit lesson and I am having trouble... (answered by scott8148)

what is the rule for the nth term of this sequence?... (answered by chessace)