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

This Question is Closed

axelneel
 one year ago
Best ResponseYou've already chosen the best response.0i keep coming up with 126 but my options are 70,72,111,114. PLEASE HELP

RaphaelFilgueiras
 one year ago
Best ResponseYou've already chosen the best response.1dw:1372218335949:dw

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.1\[\large a_{n}= a_{1}+(n1)d\]

RaphaelFilgueiras
 one year ago
Best ResponseYou've already chosen the best response.1find r and then just plug in that first equation

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.1\[\large 66 =12+(271)d \]\[\large 66= 12 +26d\]\[\large 78 = 26d\]\[\large d= 3\] \[\large a_{42} = 12 + 3(421)\]\[\large a_{42} = 12 + 123\]\[\large a_{42} = 111\]

axelneel
 one year ago
Best ResponseYou've already chosen the best response.0i have no idea what i was doing wrong... but thank you
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.