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Chapter 3: Problem 30

Determine each of the values, |0|

Short Answer

Expert verified
Answer: The absolute value of 0 is 0.

Step by step solution

01

Understanding absolute value

The absolute value of a number can be thought of as the distance from that number to 0. It is represented by the notation |x|, where x is any number. The absolute value is always a non-negative number, so the absolute value of a positive number is the same number, while the absolute value of a negative number is the opposite (positive) number.
02

Determine the absolute value of 0

Since absolute value represents the distance of a number from 0, we can see that |0| will be 0 itself, because the distance of 0 from 0 is 0. |0| = 0 So, the absolute value of 0 is 0.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Distance from Zero
Absolute value is a concept that helps us understand the distance of a number from zero on a number line. It doesn't matter whether the number is positive or negative. We simply need to measure how far away it is from zero.
For instance, if you have the numbers -3 and 3, both are at the same distance from zero, which is 3 units away.
- The absolute value of -3 is 3. - Similarly, the absolute value of 3 is also 3.
This makes absolute values a straightforward way to always think positively about distance, without any need for direction, just like counting the blocks between two stops on a street block grid.
Non-negative Numbers
When we talk about absolute values, we're often emphasizing that they are always non-negative. This means the absolute value of any number, regardless of it being positive or negative, will never be negative.
Think about it this way: since distance cannot be negative, any measure of how far something is from a point (in this case, zero) will always be a positive number or zero itself.
  • If the number is positive, like 5, the absolute value is simply 5.
  • If the number is negative, such as -5, the absolute value turns it into a non-negative number, which is 5 as well.
  • Even zero itself has an absolute value that is non-negative, as we've seen with |0| = 0.
This ensures that absolute values offer a consistent way to consider and work with numbers without worrying about negative signs.
Number Line Representation
Visualizing absolute value using a number line can simplify the concept even more. On a number line, every number naturally has a specific point. The absolute value is just how far this point is from zero.
You can draw a number line starting with a few negative numbers, hitting zero, and continuing through positive numbers. Compare any two numbers using a ruler, or just count the spaces to zero.
  • For the number -2, you count 2 spaces to zero. So, |-2| equals 2.
  • For the number 4, count simply 4 spaces to zero, confirming that |4| equals 4.
  • Since zero sits right on zero, it doesn鈥檛 move, making |0| an easy concept鈥攊t's exactly zero spaces away!
This clear visual method provides a hands-on understanding of how absolute value works, making it a great tool for learners of all ages.

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