Ask your own question, for FREE!
Mathematics 53 Online
OpenStudy (anonymous):

whta is the sum of the first 30 terms of this arithmetric sequence? 6,13,20,27,34

OpenStudy (anonymous):

A.3225 B.3255 C3325 D.3525

OpenStudy (anonymous):

If I'm correct, it should be 3225, so A. I think you can write out the series as \[\sum_{i=1}^{30}6+(i-1)7\] And then you can find the last number in the series, which is 209. Add 209 and the first term, 6, then multiply by half of the terms. \[\frac{ 30 }{ 2 } (209+6)\]

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!
Latest Questions
MakaylaChuck23: Help wats this
1 hour ago 1 Reply 0 Medals
MakaylaChuck23: uh oh
1 hour ago 1 Reply 0 Medals
Treeko: Pics I took w my friend !
3 hours ago 6 Replies 1 Medal
Aliciaa: Is anyone elses QC going wack? Mine keeps freezing and stuff
1 hour ago 26 Replies 0 Medals
autumnp: does anyone have bandlab?
4 hours ago 4 Replies 0 Medals
Jeromeccv: Art for @vanessad123
1 hour ago 49 Replies 4 Medals
ohhhhhhhhhhhhhh: how do i slim my waist fast
4 hours ago 4 Replies 1 Medal
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!