Question

Let a=-2.8 . What is the value of -a?
1) 2.8
2) -8.2
3) -2.8
4) 8.2

Answer 1

The value of -a is 2.8.

Step-by-step explanation:

The negation of a number is the mathematical operation of reversing the sign of the number.

The value of -a can be found by simply negating the value of a. Since a = -2.8, the negation of -2.8 is 2.8. Therefore, the value of -a is 2.8. In general, the negation operation simply flips the sign of the number, whether it's positive or negative.