Register
Find a39 of the arithmetic sequence given a1=−28 and d=−4.
489,171 views
4 votes
4 votes
Find a39 of the arithmetic sequence given a1=−28 and d=−4.

Find a39 of the arithmetic sequence given a1=−28 and d=−4.-example-1
User Fedaykin
by
2.3k points

1 Answer

13 votes
13 votes

SOLUTION

Given:


\begin{gathered} For\text{ arithmetic sequence;} \\ a_n=a_1+(n-1)d \end{gathered}
\begin{gathered} a_(39)=? \\ n=39 \\ d=-4 \\ a_1=-28 \end{gathered}
\begin{gathered} a_(39)=-28+(39-1)(-4) \\ a_(39)=-28+38(-4)=-28-152=-180 \end{gathered}

Final answer:

Find a39 of the arithmetic sequence given a1=−28 and d=−4.-example-1
Find a39 of the arithmetic sequence given a1=−28 and d=−4.-example-2
User Rharvey
by
3.2k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

1.6m questions

2.0m answers

Other Questions

Can anybody tell me what’s going on here?
Granola costs $1.76 per pound. Write and solve an equation to determine the number of pounds p of granola that can be purchased with $7.04. The equation is: The value of x is
Evalute 8a -1+0.5b when a =1/4 and b= 10 how dose this work i need help..
PLZ needed now plz URGENT!
HELP PLEASE, I NEED THE ANSWER QUICKLY
Link Copied!