Question

what is the absolute value of 20?

Explanation:

Step1: Recall absolute value definition

The absolute value of a non - negative number \(x\) (where \(x\geq0\)) is the number itself. The formula for the absolute value of a number \(a\) is \(|a|=

$$\begin{cases}a, & a\geq0\\-a, & a < 0\end{cases}$$

\)

Step2: Apply the definition to 20

Since \(20\) is a non - negative number (\(20\geq0\)), by the definition of absolute value, \(|20| = 20\)

Answer:

20