2 years ago

Find the 75th term of the arithmetic sequence -1, 15, 31, ...−1,15,31,...

Mathematics

1 answer:

Readme [11.4K]2 years ago

3 0

Answer:

1183

Step-by-step explanation:

Common difference:

d = 31 - 15 = 16

nth term:

$a_n = a_1 + (n - 1)d$

Here, $a_1 = -1$

$a_{75} = -1 + (75 - 1)(16)$

$a_{75} = 1183$

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