Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
← 55 members online
 0 viewing
claireshowers
Group Title
What is the sum of a 17term arithmetic sequence where the first term is 9 and the last term is 87?
 2 years ago
 2 years ago
claireshowers Group Title
What is the sum of a 17term arithmetic sequence where the first term is 9 and the last term is 87?
 2 years ago
 2 years ago

This Question is Closed

sheg Group TitleBest ResponseYou've already chosen the best response.1
use the general formula of summation of an arithmetic series
 2 years ago

eSpeX Group TitleBest ResponseYou've already chosen the best response.1
S_n = 1/2 n(a_1 + a_n)
 2 years ago

eSpeX Group TitleBest ResponseYou've already chosen the best response.1
S_n = a_1 + d(a_n1) is the other form I believe.
 2 years ago
See more questions >>>
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.