ovidiumanolache ovidiumanolache
  • 26-04-2021
  • Mathematics
contestada

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

Respuesta :

ghanami
ghanami ghanami
  • 26-04-2021

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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