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# what is this subject called/-15/?

the slash should be straight lines!

plz help thx!=))

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- Anonymous1 decade agoFavorite Answer
i'm not sure i understand you, but |-15| is the absolute value of -15, which is 15

- SlowfingerLv 61 decade ago
It's the modulus, also called the "absolute value". It is written |x|, and is defined by:

|x| = x, if x ≥ 0

|x| = -x, if x < 0.

The absolute value may be thought of as the number's distance from zero on the real number line. For example, the modulus of -7 is 7 and the modulus of −5 is 5.

In this case, |-15| = 15

To type vertical lines, use combination of keys "Right ALT"+W

- Anonymous1 decade ago
|-15| is 15

Number between || is the absolute value of that number. Absolute value of a number is always positive

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- Anonymous1 decade ago
modulus of -15, so just 15

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