danielshinners2003
danielshinners2003 danielshinners2003
  • 25-10-2018
  • Mathematics
contestada

The formula to find a certain number in an arithmetic sequence is an=a1+d(n−1) .

Solve for n.

The formula to find a certain number in an arithmetic sequence is ana1dn1 Solve for n class=

Respuesta :

choixongdong
choixongdong choixongdong
  • 25-10-2018

an = a1 + d(n−1)

an = a1 + dn - d

dn = an - a1 + d

 n = (an - a1 + d) / d

 n = (an - a1)/d + 1

Answer is B.

 n = (an - a1)/d + 1


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