beccaxgrace
beccaxgrace beccaxgrace
  • 24-04-2019
  • Mathematics
contestada

Which answer is the explicit rule for the sequence 12.5,11,9.5,8,6.5,5... ?

Respuesta :

adnhw
adnhw adnhw
  • 24-04-2019

Answer:

aₙ = 12.5 - 1.5(n - 1)

Step-by-step explanation:

We use the general equation

aₙ = a₁ + d(n - 1)

aₙ is the term we want

a₁ is the first term (12.5)

d is the common difference (-1.5) as we go through the sequence we see a common difference of -1.5

n is the term number (if we wanted the third term n would be 3)

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