Which sequences are arithmetic?check all that apply.
2 answers:
ANSWER
Option C and E
EXPLANATION
An arithmetic sequence has a constant difference among the consecutive terms.
The sequence
![18,5.5,-7,-19.5,-32,...](https://tex.z-dn.net/?f=18%2C5.5%2C-7%2C-19.5%2C-32%2C...)
has a constant difference of -12.5
![d = 5.5 - 18 = - 7 - 5.5 = - 19.5 - - 7 = - 32 - - 19.5 = - 12.5](https://tex.z-dn.net/?f=d%20%3D%205.5%20-%2018%20%3D%20%20-%207%20-%205.5%20%3D%20%20-%2019.5%20-%20%20-%207%20%3D%20%20-%2032%20-%20%20-%2019.5%20%3D%20%20-%2012.5)
The sequence
![16,32,48,64,80,...](https://tex.z-dn.net/?f=16%2C32%2C48%2C64%2C80%2C...)
also has a common difference of 16
![d = 32 - 16 = 48 - 32 = 64 - 48 =80 -64 = 16](https://tex.z-dn.net/?f=d%20%3D%2032%20-%2016%20%3D%2048%20-%2032%20%3D%2064%20-%2048%20%3D80%20-64%20%3D%2016)
Therefore correct answers are C and E
Answer:
Step-by-step explanation:
An arithmetic sequence has a constant difference among the consecutive terms.
The sequence has a constant difference of -12.5
The sequence also has a common difference of 16
Therefore correct answers are C and E
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