SOLUTION: The 11th term of an arithmetic sequence is 57 and the sum of
The first and fourth is 29 .
1, Determine the first three terms of the sequence.
2, Determine a formula of the nth
Algebra.Com
Question 1205669: The 11th term of an arithmetic sequence is 57 and the sum of
The first and fourth is 29 .
1, Determine the first three terms of the sequence.
2, Determine a formula of the nth term.
3,Is 100 a ter
m in the sequence justify your answer
Found 2 solutions by josgarithmetic, MathLover1:
Answer by josgarithmetic(39618) (Show Source): You can put this solution on YOUR website!
ARITHMETIC sequence general term
n is index
d is common difference between terms
A is first term
(fixed)
Description gives the equation system .
-
-
general term, ;
do what you need from that.
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!
th term of an arithmetic sequence formula is:
where is first term and is common difference
if the th term of an arithmetic sequence is , we have
then
...eq.1
and, if the sum of the first and fourth is , we have
since
we have
....eq.2
from eq.1 and eq.2 we have
go to
...eq.1, substitute
1, Determine the first three terms of the sequence.
2, Determine a formula of the nth term.
3, Is a term in the sequence justify your answer
=> is not a term in this sequence because is not an
RELATED QUESTIONS
The 11th term of an arithmetic sequence is 57 and the sum of the first and fourth terms... (answered by MathTherapy)
The 11th term of an arthmetric sequence is 57 and the sum of the first and fourth terms... (answered by hovuquocan1997)
The 11th term of an arithmetic sequence is 57 and the sum of the first and the fourth... (answered by Edwin McCravy)
The first term of an arithmetic sequence is 5 and the 11th term is 65. Find the 9th... (answered by ewatrrr)
the sum of the second and sixth terms of an arithmetic sequence is 4. the third term is... (answered by Fombitz)
What are the first three terms if the 11th term of an
arithmetic sequence is 60 and the... (answered by Edwin McCravy)
Write the first four terms of an arithmetic sequence whose ninth term is -51 and whose... (answered by rothauserc)
write the first three terms of an arithmetic sequence if the fourth term is 10 and... (answered by Tatiana_Stebko)
write the first three terms of an arithmetic sequence if the fourth term is 10 and... (answered by scott8148)