A community for students.
Here's the question you clicked on:
← 55 members online
 0 viewing
anonymous
 one year ago
Identify the 42nd term of an arithmetic sequence where a1 = −12 and a27 = 66.
anonymous
 one year ago
Identify the 42nd term of an arithmetic sequence where a1 = −12 and a27 = 66.

This Question is Closed

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[a_{27}=12+26\times d=66\] solve for \(d\) first

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So, I got a27=14xd=66

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0solve \[12+26d=66\] first just like you solve any linear equation

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0add \(12\) to both sides, then divide both sides by \(26\) to solve for \(d\)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Do we plug it back again?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so the 42 term is \[12+41\times 3\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0idk i didn't do it hold on
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.