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Does every rational number have an additive inverse and why?
yes
Does every rational number have an additive inverse?
Yes.
What is the additive inverse of a rational number?
It is the number with the same magnitude (absolute value) and the opposite sign.
How do you find the multplicate inverse of a rational number?
You take its reciprocal, that is you divide 1 by the number. A rational number can be written as a fraction with integer values in both the numerator and denominator, j/k. The multiplicative inverse of a number is what you have to multiply by to get a product of 1. Putting these ideas together, the multiplicative inverse is the reciprocal, or k/j: (j/k) * (k/j) = 1.
What type of number is negative 3.8?
It is a negative number. It is also a rational number; also, it's a real number.
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