Answer:
−2.9 and −1.1
Step-by-step explanation:
Let x be an unknown number.
It is given that an unknown number is at a distance of 0.9 units from −2.
It means either the number is 0.9 more than -2 or the number is 0.9 less than -2.
Case 1: x is 0.9 more than -2.
[tex]x=-2+0.9=-1.1[/tex]
Case 2: x is 0.9 less than -2.
[tex]x=-2-0.9=-2.9[/tex]
The value of unknown number is either -1.1 or -2.9.
Therefore, the correct options are 3 and 4.
