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What is the first term, common difference, and 16th term
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What is the first term, common difference, and 16th term

What is the first term, common difference, and 16th term-example-1
User Brianestey
by
4.4k points

1 Answer

1 vote

Answer:

The 1st term is -67

Explanation:

I. When Sn =
(n)/(2)(
a_(1) + a_(n))

If Sn = 124, n = 8 and
a_(n) = 98

124 = 8/2(a + 98)

124 = 4(a + 98)

124 = 4a + 392

124 - 392 = 4a

-268/4 = a

-67 =
a_(1)

Hope that help :D

User Tscherg
by
4.2k points
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