A: ### Quick Answer

**The reciprocal of a negative number is also a negative number because when the two numbers are multiplied the answer is 1.** For example, the reciprocal of -6 is -1/6, and the product of these two numbers is -6 x (-1/6)= 1.

The reciprocal of a number is also known as a multiplicative inverse, and it is defined as that number which when multiplied by the given number gives the result as unity, in other words 1. A reciprocal is determined by exchanging the position of the numerator and denominator in a given number. For example, the reciprocal of -2/3 is -3/2.

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## What is a non-real number?

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Full Answer >**A non-real, or imaginary, number is any number that, when multiplied by itself, produces a negative number.**Mathematicians use the letter "i" to symbolize the square root of -1. An imaginary number is any real number multiplied by i. For example, 5i is imaginary; the square of 5i is -25.Filed Under: - Q:
## What number has a tens digit that is eight more than the ones digit?

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Full Answer >**The two numbers that have a tens digit that is eight more than the ones digit are 80 and 91.**Note that there are some larger numbers that also exhibit this pattern, such as 180, 280, 191 or 291.Filed Under: - Q:
## What is a negative number minus a positive number?

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Full Answer >**If one subtracts a positive number from a negative number, the process is still subtraction.**For example, -3 minus 7 is -10. On the other hand, subtracting a negative number from a positive number is equivalent to addition.Filed Under: - Q:
## What is a positive number plus a negative number?

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Full Answer >**The result of a adding a positive number and a negative can either be a negative number or a positive number, depending on the sign of the biggest number.**If the sign of the larger number is negative, then the result is a negative number. However, if the sign of the larger number is positive, then the result is a positive number.Filed Under: