Answer:B
Step-by-step explanation:
Answer:
Step-by-step explanation:
+(+) Two like signs become a positive sign 3+(+2) = 3 + 2 = 5
−(−) 6−(−3) = 6 + 3 = 9
+(−) Two unlike signs become a negative sign 7+(−2) = 7 − 2 = 5
−(+) 8−(+2) = 8 − 2 = 6
52 - 37 = 15
67 - 52 = 15
82 - 67 = 15
The common difference for this arithmetic sequence is 15.
Answer: C.
Answer:
6
Step-by-step explanation:
since 
, and 
,
.
