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1) Temperature below zero degrees is denoted by a negative number.

2) In business, profit is shown as positive and loss as negative

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Q: What are some negative numbers you use in the real world?
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Is a negative number unreal?

No, they are quite real. It is just that in some situations it makes sense to use negative numbers, in others not.


What are some of the everyday uses of negative numbers?

Temperature in cold areas are negative. Below sea level is negative altitude. Degrees left on the world coordinates.


What is the combination of real numbers in math?

It depends on the combination. Real numbers are closed with respect to arithmetical operations (+, -, *, /), as well as integer powers (exponents). So a combination of real numbers using any of these operators will yield a real number. But the set is not closed with respect to some fractional powers - for example, the square root of a negative number is not real.It depends on the combination. Real numbers are closed with respect to arithmetical operations (+, -, *, /), as well as integer powers (exponents). So a combination of real numbers using any of these operators will yield a real number. But the set is not closed with respect to some fractional powers - for example, the square root of a negative number is not real.It depends on the combination. Real numbers are closed with respect to arithmetical operations (+, -, *, /), as well as integer powers (exponents). So a combination of real numbers using any of these operators will yield a real number. But the set is not closed with respect to some fractional powers - for example, the square root of a negative number is not real.It depends on the combination. Real numbers are closed with respect to arithmetical operations (+, -, *, /), as well as integer powers (exponents). So a combination of real numbers using any of these operators will yield a real number. But the set is not closed with respect to some fractional powers - for example, the square root of a negative number is not real.


What are the differences between real numbers and imaginary numbers?

The set of real numbers is not closed under powers. That is to say, there are some equations of the form y = xa which do not have a solution within the set. Typical example: x is negative, a = 0.5


What is subset of real number?

There are lots of subsets; some of the ones that are commonly used are: rational numbers; irrational numbers; positive numbers; negative numbers; non-negative numbers; integers; natural numbers. Remember that a subset simply means a set that is contained in another set. It may even be the same set. So the real numbers are a subset of themselves. The number {3} is a subset of the reals. All the examples above are subsets as well. The set {0,1, 2+i, 2-i} is NOT a subset of the real numbers. The real numbers are a subset of the complex numbers.

Related questions

Name the sets of numbers to which negative 10 belongs?

Of the "standard sets" -10 belongs to: ℤ⁻ (the negative integers) ℤ (the integers) ℚ⁻ (the negative rational numbers) ℚ (the rational numbers) ℝ⁻ (the negative real numbers) ℝ (the real numbers) ℂ (the complex numbers) (as ℤ ⊂ ℚ ⊂ ℝ ⊂ ℂ). Other sets are possible, eg the even numbers.


Is a negative number unreal?

No, they are quite real. It is just that in some situations it makes sense to use negative numbers, in others not.


What are some examples of negative numbers used around the world?

Temperature and Money Issues.


What are some of the everyday uses of negative numbers?

Temperature in cold areas are negative. Below sea level is negative altitude. Degrees left on the world coordinates.


Are irrational numbers negative?

Not necessarily. Negatives can be rational or irrational - each one is the same as its positive counterpart.


What are the differences between real numbers and imaginary numbers?

The set of real numbers is not closed under powers. That is to say, there are some equations of the form y = xa which do not have a solution within the set. Typical example: x is negative, a = 0.5


What is the combination of real numbers in math?

It depends on the combination. Real numbers are closed with respect to arithmetical operations (+, -, *, /), as well as integer powers (exponents). So a combination of real numbers using any of these operators will yield a real number. But the set is not closed with respect to some fractional powers - for example, the square root of a negative number is not real.It depends on the combination. Real numbers are closed with respect to arithmetical operations (+, -, *, /), as well as integer powers (exponents). So a combination of real numbers using any of these operators will yield a real number. But the set is not closed with respect to some fractional powers - for example, the square root of a negative number is not real.It depends on the combination. Real numbers are closed with respect to arithmetical operations (+, -, *, /), as well as integer powers (exponents). So a combination of real numbers using any of these operators will yield a real number. But the set is not closed with respect to some fractional powers - for example, the square root of a negative number is not real.It depends on the combination. Real numbers are closed with respect to arithmetical operations (+, -, *, /), as well as integer powers (exponents). So a combination of real numbers using any of these operators will yield a real number. But the set is not closed with respect to some fractional powers - for example, the square root of a negative number is not real.


What is subset of real number?

There are lots of subsets; some of the ones that are commonly used are: rational numbers; irrational numbers; positive numbers; negative numbers; non-negative numbers; integers; natural numbers. Remember that a subset simply means a set that is contained in another set. It may even be the same set. So the real numbers are a subset of themselves. The number {3} is a subset of the reals. All the examples above are subsets as well. The set {0,1, 2+i, 2-i} is NOT a subset of the real numbers. The real numbers are a subset of the complex numbers.


What are some examples of negative numbers in daily life?

There are lots of situations in the real world in which there are opposites, which can conveniently be expressed with positive/negative numbers. Here are some examples:Having money (positive), having a debt (negative)Getting a profit (positive) or a loss (negative) with a business ventureAn altitude above (positive) or below (negative) sea levelGaining points or losing points in a gameMoving in one direction or in the opposite direction. In this case, it is quite arbitrary which direction is chosen as positive.


What are some ways you use negative numbers in everyday life?

Some people work as a teacher or a mathmetition, they use negative numbers in their everyday lives. Some people use negative numbers when they are overdue.


Every real number is an integer?

Integers are a subset of real numbers. All integers are real numbers, but not the other way around. Real numbers, without going into great detail, are numbers that can be drawn on a standard x-y graph. This includes integers, fractions & decimals, common constants such as pi and e, etc. Taking the square root of negative number would result in an imaginary number (which are not a real numbers.) Integers are essentially whole numbers (numbers that can be written without a decimal or in fraction form).


Which of the following sets of numbers contains multiplicative inverses for all its nonzero elements?

Please don't write "the following" if you don't provide a list. This is the situation for some common number sets:* Whole numbers / integers do NOT have this property. * Rational numbers DO have this property. * Real numbers DO have this property. * Complex numbers DO have this property. * The set of non-negative rational numbers, as well as the set of non-negative real numbers, DO have this property.