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Chapter 11: Q. 30 (page 586)

If $a_{n} = 1 - 5 n$ , what is $a_{10}$ ?

Short Answer

Expert verified

The value of $a_{10} = - 49$ .

Step by step solution

01

Step 1. Given Information.

Given arithmetic sequence is described by $a_{n} = 1 - 5 n$

02

Step 2. Calculation.

Plugging the values in the equation:

$\begin{array}{l} a_{n} = 1 - 5 n \\ a_{10} = 1 - 5 (10) \\ a_{10} = 1 - 50 \\ a_{10} = - 49 \end{array}$

03

Step 3. Conclusion.

Hence, $a_{10} = - 49$ .

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