Step-by-step explanation
The opposite of a number is a number that is the same distance from 0 as another number,but in the opposite direction
they have the same value, but in opposite directions,hence the opposite of a positive number is its negative value.
then
![\begin{gathered} 2.6 \\ 2.6\text{ is a positive number, so} \\ \text{its opposite is} \\ A)-2.6 \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/4piwfay997ub7dc7f0sklkrcdjcd7oazq6.png)
so, the answer is
![A)-2.6](https://img.qammunity.org/2023/formulas/mathematics/college/jc1toyfbsp1pd3pr4tdsz14c77kqx23ne3.png)
I hope this helsp you