Answer:
1,4,9,16...
Step-by-step explanation:
It does not have a common difference between each consecutive term, therefore it is not an arithmetic sequence.
Answer:
420 km
Step-by-step explanation:
75 times 5 = 375
75/10 = 7.5 times 6 = 45
375 + 45 = 420
Answer:
60
Step-by-step explanation:
8640/60 is 144. 144 is a perfect square. 12*12 is 144
