Question

Find the common difference for the sequence shown.

56, 49, 42, 35, ...
-7
-12
7

Answer 1

(Maybe -7) Bc 56-49=7 49-42=7 42-35=7 since it’s goin backwards it should be (-7)

Answer 2

-7

Explanation:

Given : sequence 56, 49, 42, 35, ...

To find : Find the common difference.

Solution : We have given that 56, 49, 42, 35, ...

By the common difference of an arithmetic sequence is:

d = a_{2} -a_{1}a2−a1

Where, a_{1}a1 is the first term and a_{1}a1 is the second term.

Then common difference = 49 -56

= -7 .