Question

What is the sum of the arithmetic sequence 8, 15, 22 …, if there are 26 terms?

Answer 1

well first find the common difference

Answer 2

n+7

Answer 3

subtract any consequetive terms.that gives you the common difference

Answer 4

for example if a,b and c are in arithmetic progression then common difference is
b-a which also equals c-a
now tell what's the cd for the given sequence?

Answer 5

r u there?

Answer 6

yes

Answer 7

i dont get it

Answer 8

do you know what common difference in an arithmetic progression means?

Answer 9

no

Answer 10

http://www.math10.com/en/algebra/arithmetic-progression.html

Answer 11

ok

Answer 12

can you it solve yourself now?

Answer 13

not really

Answer 14

im gonna guess it

Answer 15

you attemptin sum kinda test?