Math, asked by Gemsroy7359, 2 months ago

The sum of the first 10 terms of arithmetic sequence is 530.what is the first term if the last term is 80 and the common difference is 2?

Answers

Answered by prakharblp

1

Answer:

Given

d = 2

l = 80

n = 10

S10 = 530

To find a.

Step-by-step explanation:

S10 = 530

10/2(a + 80) = 530

5(a + 80) =530

a + 80 = 530/5

a = 106 - 80

First term = 26

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