SOLUTION: Find a formula for an for the arithmetic sequence.
a1 = 100, d = −9
Algebra.Com
Question 1178224: Find a formula for an for the arithmetic sequence.
a1 = 100, d = −9
Answer by ikleyn(52909) (Show Source): You can put this solution on YOUR website!
.
= + (n-1)*d = 100 -9*(n-1) = 109 - 9n, n = 1, 2, 3, . . .
-------------
For introductory lessons on arithmetic progressions see
- Arithmetic progressions
- The proofs of the formulas for arithmetic progressions
- Problems on arithmetic progressions
- Word problems on arithmetic progressions
in this site.
Learn the subject from there (!)
Also, you have this free of charge online textbook in ALGEBRA-II in this site
- ALGEBRA-II - YOUR ONLINE TEXTBOOK.
The referred lessons are the part of this online textbook under the topic "Arithmetic progressions".
Save the link to this textbook together with its description
Free of charge online textbook in ALGEBRA-II
https://www.algebra.com/algebra/homework/complex/ALGEBRA-II-YOUR-ONLINE-TEXTBOOK.lesson
into your archive and use when it is needed.
RELATED QUESTIONS
Find a formula for an for the arithmetic sequence.
a1 = −1, a5 =... (answered by ikleyn,Boreal)
Find a formula for an for the arithmetic sequence.
a1 = −1, a5 = 23
(answered by ikleyn)
Use the formula for the general term (the nth term) of an arithmetic sequence to find the (answered by MathLover1)
Find a1 for the arithmetic sequence:... (answered by stanbon)
Find A1 and d for an arithmetic sequence with these terms:
A4 = 9
A7 =... (answered by josgarithmetic)
Find a1 and d for an arithmetic sequence with these terms: a4=9 and... (answered by richwmiller)
Write a formula for the arithmetic sequence by using the general formula and then... (answered by ewatrrr)
If the 5th term of an arithmetic sequence is 32 and the 10th term is 57, find the... (answered by richwmiller)
find a8 when a1 = -6, d=2. use the formula for the general term ( the n^th term ) of an... (answered by Cromlix)