sanic123
sanic123 sanic123
  • 01-02-2019
  • Mathematics
contestada

What is the explicit rule for the sequence in simplified form?
−1,−4,−7,−10,−13…


an=4−5n

an=−4−3n

an=2−3n

an=−6−5n

Respuesta :

a5904640
a5904640 a5904640
  • 01-02-2019

an = a1 + (n - 1).r


r = a2 - a1

r = -4 - (-1)

r = -4 + 1

r = -3


an = a1 + (n - 1).(-3)

an = -1 + (n - 1).(-3)

an = -1 + (-3n + 3)

an = -1 - 3n + 3

an = 2 - 3n

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