3 years ago

Find an equation for the nth term of the arithmetic sequence. -13, -8, -3, 2, ...

Mathematics

1 answer:

Katena32 [7]3 years ago

8 0

Answer:

An = 5n-18

Step-by-step explanation:

hello :

note : the n th term of an arithmetic sequence is :

An =A1+(n-1)d ....a common difference is : d and A1 the first term

in this exercice : d = 2-(-3)=-3-(-8) =5 A1 = -13

the n th term of an arithmetic sequence is :An =-13+(n-1)(5)

An = 5n -5 -13

An = 5n-18

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