Skip to main content
Ch. P - Fundamental Concepts of Algebra
Blitzer - College Algebra 8th Edition
Blitzer8th EditionCollege AlgebraISBN: 9780136970514Non è quello che usi tu?Cambia libro di testo
Capitolo 1, Problema 67

Express the distance between the given numbers using absolute value. Then find the distance by evaluating the absolute value expression. 2 and 17

Guida verificata passo dopo passo
1
Identify the two numbers given: 2 and 17.
Recall that the distance between two numbers \(a\) and \(b\) on the number line can be expressed as the absolute value of their difference: \(\left| a - b \right|\).
Write the distance between 2 and 17 as \(\left| 2 - 17 \right|\) or equivalently \(\left| 17 - 2 \right|\).
Evaluate the expression inside the absolute value: calculate \(2 - 17\) or \(17 - 2\).
Find the absolute value of the result from the previous step to get the distance between the two numbers.

Risposta video verificata per un problema simile:

Questa soluzione video è stata consigliata dai nostri tutor come utile per risolvere questo problema.
Durata del video:
2m

Concetti chiave

Ecco i concetti essenziali che devi comprendere per rispondere correttamente alla domanda.

Absolute Value

Absolute value represents the distance of a number from zero on the number line, regardless of direction. It is always non-negative and is denoted by vertical bars, e.g., |x|. For example, |−3| = 3 and |3| = 3.
Video consigliato:
7:12
Parabolas as Conic Sections Example 1

Distance Between Two Numbers

The distance between two numbers on the number line is the absolute value of their difference. This ensures the distance is always positive or zero, calculated as |a − b|, where a and b are the given numbers.
Video consigliato:
4:47
The Number e

Evaluating Absolute Value Expressions

To find the distance, substitute the numbers into the absolute value expression and simplify. For example, the distance between 2 and 17 is |2 − 17| = |−15| = 15, which gives the numerical distance.
Video consigliato:
03:11
Evaluating Algebraic Expressions