danielshinners2003 danielshinners2003

25-10-2018
Mathematics

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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=

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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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