Question 410797: I have to find the "nth" term in a sequence. The series of numbers is -2,-10,-50, -250... I have to find the fifth and ninth term in this sequence. I have come across several equations and they are:
 and 
This is a question on a take home quiz and don't necessarily want the answer, I just need help on what each of the variables stands for.(Example: A(n) is the nth term you want to find)
Please help A.S.A.P. and Thank You!
Sincerely,
-In Need of Help
Found 2 solutions by scott8148, stanbon:
Answer by scott8148(6628)   (Show Source):
You can put this solution on YOUR website! this is a geometric sequence ___ each term is 5 times the previous term , so the common ratio (r) is 5
starting with some term "a" ___ a , a(5) , a(5^2) , a(5^3) , etc
you can see that the nth term would be ___ a[5^(n-1)]
Answer by stanbon(75887)  (Show Source):
You can put this solution on YOUR website! I have to find the "nth" term in a sequence. The series of numbers
is -2,-10,-50, -250... I have to find the fifth and ninth term in this sequence.
This is a geometric sequence because each successive term is 5 times
the previous term.
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Formula:
The nth term formula is a(n) = a(1)*r^(n-1)
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In your sequence a(1) is -2 and r is 5
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Find a(5)
Find a(9)
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Cheers,
Stan H.
This is a question on a take home quiz and don't necessarily want the answer, I just need help on what each of the variables stands for.(Example: A(n) is the nth term you want to find)
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