Question

The first term of an arithmetic sequence is -5, and the tenth term is 13. Find the common difference.


8/9
1.8
2


how clo

Answer 1

do you know what to do?

Answer 2

so, how many units between -5 and +13?

Answer 3

18

Answer 4

what i do (and it is simple) is i take the first number, and keep adding each possible answer until i get to the answer
counting how many times it takes each number to get to the 10th term

Answer 5

so, between the 1st and the 10th term, there are 18 units difference
and from the 1st term to get to the 10th term, you'd need to add 9 terms

so you added 9terms, from the 1st term to get to the 10th term

so 18 units, divided among 9terms
is the common ratio :)

Answer 6

so 2

Answer 7

yeap

Answer 8

yep

Answer 9

thanks for the help peeps

Answer 10

yw

Answer 11

hey j give s a medal