additive inverses
One-half and two.
reciprocal
The numbers are zero and 5. Their product is zero.
1
additive inverses
Opposite numbers.
Absolute value
One-half and two.
The numbers are 28 and 29.
reciprocal
No, they are not!
For two numbers to be equidistant from zero, one must be the negative of the other. As one is the negative of the other, it is the additive inverse of that number. The sum of an number and its additive inverse is zero.
One or both of the numbers must be zero.
No.
The numbers are zero and 5. Their product is zero.
30 and 45