Chapter 8.2, Problem 49E

To determine

The first 10 terms of the arithmetic sequence.

Answer to Problem 49E

The ten terms are $19.25,18.5,17.75,17,16.25,15.5,14.75,14,13.25,12.5$

Explanation of Solution

Given information:

  $a_n=20-\frac{3}{4}n$

Formula used:

Graphical utility is used.

Calculation:

The arithmetic sequence, $a_n=20-\frac{3}{4}n$

Now determine the first ten terms of the given arithmetic sequence by using the table feature of a graphing utility as shown below:

  

Thus, the ten terms of the given arithmetic sequence are

  $19.25,18.5,17.75,17,16.25,15.5,14.75,14,13.25,12.5$

Conclusion:

The ten terms are $19.25,18.5,17.75,17,16.25,15.5,14.75,14,13.25,12.5$