Arithmetic, Sum of Arithmetic and Sigma Notation

Determine the sum of the series written in Sigma Notation. 

• 3174

• 1590

• 3180

• 6356

Determine the sum of the series written in Sigma Notation. 

• 5400

• 2692

• 2700

• 2704

What is the common difference inthe sequence -7, -5, -3, -1, … ?

• 1/2

• -1/2

• 2

• -2

Identify the common difference.
97, 86, 75, 64, ...

• 8

• 11

• -11

• -8

Write the series in sigma notation.

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Find the sum of the arithmetic series using a formula.

• 516, 240

• 516,242

• 116, 242

• 506, 242

Write the series in sigma notation.

Hint: You need to determine the term NUMBER of 43

Some "books" use "k" instead of "n"

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Answer explanation

d=2

a(0)=3

a(n)=2n+3

43=2n+3

Solve

n=20

The correct sigma notation for an arithmetic sequence is:

What is the 7th term in the sequence

7, 11, 15, … ?

• 30

• 31

• 32

• 33