Question

Arianna runs up 4.5 flights of stairs. What rational number represents the additive inverse?

a) -4.5
b) 4.5
c) -1
d) 1

Answer 1

The additive inverse of Arianna running up 4.5 flights of stairs is -4.5, which when added to 4.5 results in zero.

Step-by-step explanation:

The additive inverse of a number is the value that, when added to the original number, will result in zero. For a positive number, the additive inverse is negative, and for a negative number, the additive inverse is positive. In the case of Arianna running up 4.5 flights of stairs, the additive inverse would be -4.5, since 4.5 + (-4.5) equals 0. Hence, the correct answer to the question is a) -4.5.