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An arithmetic sequence has a first term of 10 and a common difference of 4.
Determine the partial sum of the first 18 terms.

Respuesta :

The sum of 18 terms is 792.

What is an Arithmetic Sequence ?

An arithmetic sequence is defined as the sequence of numbers in which the difference between two consecutive terms is same.

First Term is 10

Common Difference = 4

The partial sum of the arithmetic sequence is given by

[tex]\rm S_n = \dfrac{n}{2}( 2a+(n-1)d)[/tex]

Here a is the first term , d is the common difference

[tex]\rm S_n = \dfrac{18}{2}( 2*10+(18-1) * 4)[/tex]

Therefore the sum of 18 terms is 792.

To know more about Arithmetic Sequence

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