What is the common difference d of the sequence?
−15, −4, 7, 18, 29, ...−15, −4, 7, 18, 29, ...
Enter your answer in the box.
d= ?
- 4 - ( - 15 ) = - 4 + 15 = 11
7 - ( - 4 ) = 7 + 4 = 11
18 - 7 = 11
29 - 18 = 11
d = 11
What is the answer for d?
To find the common difference of a sequence, you need to subtract each term from the term that follows it.
In this case, let's subtract each term from the term that follows it:
First, subtract -4 from -15:
-15 - (-4) = -15 + 4 = -11.
Next, subtract 7 from -4:
-4 - 7 = -11.
Then, subtract 18 from 7:
7 - 18 = -11.
Lastly, subtract 29 from 18:
18 - 29 = -11.
As we can see, the result is always -11. Therefore, the common difference of the sequence is -11.
Thus,
d = -11.