Question

Find the sum of the first 33 terms of the following sequence:

8, 17, 26 . . .

answers:
608 2376
5016 10032

Answer 1

can you find the common difference between the terms ?

Answer 2

or know what common difference is ?

Answer 3

-9

Answer 4

-9 or +9
?

Answer 5

d= 2nd term - 1st term = 3rd term - 2nd term = .... and so on

Answer 6

d = 26- 17 = 17- 8 = ..?

Answer 7

9

Answer 8

17-8=9

Answer 9

yes

Answer 10

now apply the formula
\(\Large S_n = (n/2) (2a+(n-1)d)\)

Answer 11

where a =1st term = 8
n = number of terms = 33
d= 9

Answer 12

s33=33/2(2*8(33-1)9)
33/2(2*8(32)9)
33/2(2*8(288)
33/2(16(288)
33/2(4608)

Answer 13

something is wong i dont know what though

Answer 14

there is a plus sign in between
2*8 and (33-1)9

Answer 15

33/2(2*8+ (33-1)9)

Answer 16

ooooh ok

Answer 17

i got 5016

Answer 18

thanx for sticking around to help me ^-^

Answer 19

thats correct :)
and welcome ^_^