Do Now - Arithmetic Sequences

Front

The difference between two terms in an arithmetic sequence is called ___________________.

Back

Common Difference

Front

In the sequence 9, 18, 27, 36 and so on, what is the common difference?

Back

9

Front

Find the 26th term in the arithmetic sequence: 20, 26, 32, 38, ...

Back

170

Front

Find the 10th term in the sequence that starts with 1 and has a common difference of 3.

Back

28

Front

Find the next three terms in the arithmetic sequence: 25, 34, 43, 52, ...

Back

61, 70, 79

Front

What is the formula for the nth term of an arithmetic sequence?

Back

a_n = a_1 + (n-1)d, where a_1 is the first term and d is the common difference.

Front

If the first term of an arithmetic sequence is 5 and the common difference is 2, what is the 15th term?

Back

33

Front

What is the common difference in the sequence: 12, 15, 18, 21?

Back

3

Front

In an arithmetic sequence, if the 5th term is 20 and the common difference is 4, what is the first term?

Back

8

Front

How do you find the sum of the first n terms of an arithmetic sequence?

Back

S_n = n/2 * (a_1 + a_n), where S_n is the sum, a_1 is the first term, and a_n is the nth term.