Question

Find the common difference of the arithmetic sequence.

9, 13, 17, 21, . . .

1 4/9

4
22
9/13

Answer 1

4?

Answer 2

just subtract the first term from the second

Answer 3

ntice they all increase by the same amount

Answer 4

yes its 4

Answer 5

thanks can you help with more?

Answer 6

ok

Answer 7

Use inductive reasoning to describe the pattern. Then find the next two numbers in the pattern.

1, 4, 7, 10, . . .

add 3 to the previous term; 13, 16
multiply the previous term by 3; 30, 90
multiply the previous term by 3; 13, 90
subtract 3 from the previous term; 7, 4

Answer 8

@welshfella

Answer 9

can you see the pattern ?

Answer 10

I know one term is 3

Answer 11

@welshfella

Answer 12

no - the difference between all the terms i 3
this is similar to the last question
its an arithmetic sequance whose common difference is 3
each term is found from the previous one by adding 3

Answer 13

so you have to add 3 to 10 , then add another 3 to the result

Answer 14

- this will give you the next 2 terms after 10