SOLUTION: Find a 1 when d equals=−3 and a 9=3.
a 1=
I really don't want to screw this problem up as when I do these problems I am usually off by a couple of whole numbers I need an e
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-> SOLUTION: Find a 1 when d equals=−3 and a 9=3.
a 1=
I really don't want to screw this problem up as when I do these problems I am usually off by a couple of whole numbers I need an e
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Question 1103120: Find a 1 when d equals=−3 and a 9=3.
a 1=
I really don't want to screw this problem up as when I do these problems I am usually off by a couple of whole numbers I need an exact correct answer please so I don't get the wrong answer. Answer by ikleyn(52788) (Show Source):
You, probably, talk about an arithmetic progression and = 3 is its 9-th term.
For n-th term of an arithmetic progression, the general formula is
= .
In your case = = ,
which implies = = 3 + 24 = 27.
Answer. = 27.
Check. n: 1 2 3 4 5 6 7 8 9
: 27 24 21 18 15 12 9 6 3 ! Correct !
