Ask
your own question, for FREE!
Mathematics
7 Online
OpenStudy (anonymous):
Help! Find s25 for the following arithmetic sequence -7,-2,3,8,...
Still Need Help?
Join the QuestionCove community and study together with friends!
sam (.sam.):
You know how to apply the formula \[\LARGE S_n=\frac{n}{2}[2a_1+(n-1)d]\]?
sam (.sam.):
you gotta find d
sam (.sam.):
and d is just -2-(-7)=5
sam (.sam.):
n will be the number 25, and \(a_1\) is the first term, -7 subsitute in and evaluate
OpenStudy (anonymous):
s(25)=25/2(2(-7)+25-1)5?
Still Need Help?
Join the QuestionCove community and study together with friends!
OpenStudy (anonymous):
s(25)=625?
Can't find your answer?
Make a FREE account and ask your own questions, OR help others and earn volunteer hours!
Join our real-time social learning platform and learn together with your friends!
Join our real-time social learning platform and learn together with your friends!
Latest Questions
Maci:
what are the best stock apps for people who want to start investing?
Twaylor:
genuienly how do i get better self control i keep watcing youtube and theres this
IzzyCookie:
|dw:1792074056138:dw| Uhm, I don't know where to ask this, but I'm in college welding at my community college, and I need help learning vertical welding for
thehearken:
not sure if this is considered spam, im sorry if it is, but does anyone have tips
Maci:
what are the best stock apps for people who want to start investing?
3 days ago
3 Replies
2 Medals
Twaylor:
genuienly how do i get better self control i keep watcing youtube and theres this
6 days ago
3 Replies
0 Medals
IzzyCookie:
|dw:1792074056138:dw| Uhm, I don't know where to ask this, but I'm in college welding at my community college, and I need help learning vertical welding for
1 day ago
9 Replies
1 Medal
thehearken:
not sure if this is considered spam, im sorry if it is, but does anyone have tips
1 week ago
2 Replies
1 Medal
