Question

Select the expression that is the multiplicative inverse of n, where n is a non-zero number. A. 1n B. -n C. -1n D. 2n

Answer 1

multiplicative inverse of n

1/n

I am assuming that is A and you don't have the fraction bar

Answer 2

Answer:

A. $\frac{1}{n}$

Step-by-step explanation:

The multiplicative inverse refers to the same number but in the opposite position, if the number is a numerator, then its multiplicative opposite is at the denominator. Basically, it consists in turning around the order of the fraction.

$n=\frac{n}{1}=(\frac{1}{n})^{-1}$

The formal definition is that a number is a multiplicative inverse of another if their product gives the neutral multiplicative element which is 1. Let's try:

$n\times \frac{1}{n}=1$

Therefore, the answer is

$\frac{1}{n}$