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horrorfan [7]
3 years ago
8

Find the nth term for this quadratic sequence

Mathematics
1 answer:
melamori03 [73]3 years ago
8 0

84

from 4 to 7 , they added 3

from 7 to 12 they added 5

from 12 to 19 they added 7

from 19 to 28 they added 9

3, 5, 7, 9.... They are simply adding odd numbers to each number. So after 9 would be 11, so you add 11 to 28 and get 39, and so on...

39 + 13= 52

52 + 15 = 67

67 + 17 = 84

84 is the ninth term, so that is your answer.  

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