3 years ago

Find the 20th term in the arithmetic sequence -4,1,6,11,16

1 answer:

4 0

Use formula:
an = a1 + d(n - 1)
a1 = -4, d = 5
Plug in the numbers
a20 = -4 + (20-1) * 5
a20 = -4 + 95, a20 = 91
Solution: the 20th term is 91

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