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Shalnov [3]
3 years ago
7

Write an equation to represent the N'th term of the sequence (2,-1.-4,-7,...)

Mathematics
1 answer:
mr_godi [17]3 years ago
7 0

Answer: a(n) = 5 - 3n

the sequence has:

a1 = 2

a2 = -1

a3 = -7

.........

we can see that: a2 - a1 = a3 - a2 = -3

=> the sequence is a  arithmetic sequence

=> the distance between the numbers is d = -3

because this sequence is a  arithmetic sequence

=> a(n) = a1 + (n - 1)d = 2 + (n - 1).(-3) = 5 - 3n

Step-by-step explanation:

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More examples to try:

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Here is a guild for next time:

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and

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tino4ka555 [31]

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