3 years ago

Find the 20th term of the arithmetic sequence 15, 9, 3, -3, ...

1 answer:

4 0

The 20th term is -106

15,9,3,-3,-9,-15,-21,-28,-35,-41,-46 (10) -6 x 10 = -60

-60 + -46

-106

You're just subtracting by 6.

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