Question

What is the sum of a 34–term arithmetic sequence where the first term is 14 and the last term is 146?

Answer 1

do you know what is arithmetic sequence ?

Answer 2

use the formula we gave in the last problem, tell us your answer and we'll check it :)

Answer 3

to foolformath, not really. I am really confused with arithmetic sequence. I know one of the equations!

Answer 4

The Sn=n/2(a1+an)

Answer 5

http://www.purplemath.com/modules/series3.htm see if this helps

Answer 6

Please don't memorize formulas .. understand it .. this is really elementary algebra ..

Answer 7

Is it 2720?

Answer 8

But I don't understand it..

Answer 9

it can't be 2720 b/c the last term is 146.........

Answer 10

http://www.wikihow.com/Find-the-Sum-of-an-Arithmetic-Sequence

Answer 11

S = 0.5n(a+l)

S = 0.5(34)(14 +146)

S = 0.5(34)(160)

S = 17(160)

S = 2720

oooopppppppsssssss u were right :)

Answer 12

alright, thank you so much (: