Answer:
i think it is 12 positive
Step-by-step explanation:
i think
Answer:

Step-by-step explanation:

Answer: 3.7 (to nearest tenth)
Working:
7/17 = x/9
63 = 17x
x = 63/17
x = 3.7 (to nearest tenth)
Answer:
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Step-by-step explanation:
25 - 32 = -7 and 18 - 25 = -7
It means an arithmetic sequence with common difference d = -7
