Question

A1=2 and a8=74 what is the sum

Answer 1

Sum of the first 8 terms in an arithmetic sequence is 304.

Given that, $a_{1}=2$ and $a_{8}=74$.

What is sum of arithmetic sequence?

The sum of the arithmetic sequence formula is defined as the formula to calculate the total of all the terms present in an arithmetic sequence.

The sum of the first n terms in an arithmetic sequence is (n/2)⋅(a₁+aₙ).

Now, sum of the first 8 terms in an arithmetic sequence is

$a_{8}=$ (8/2).(2+74)

=4×76

=304

Therefore, sum of the first 8 terms in an arithmetic sequence is 304.

To learn more about an arithmetic sequence visit:

brainly.com/question/15412619.

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