3 years ago

Find the 15th term of the arithmetic sequence if a1 = -3 and d = 2

Mathematics

1 answer:

pantera1 [17]3 years ago

3 0

Answer:

Step-by-step explanation:

a1 = - 3 Given

d = 2 Given

n = 15 Given

Formula

tn = a1 + (n - 1) * d

Substitute and solve

t15 = -3 + (15 - 1) * 2 Calculate what's in the brackets.

t15 = -3 + 14*2 Combne

t15 = -3 + 28 Add the two terms

t15 = 25

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