-11 is an integer and so there is not really a sensible way of writing it as a fraction or mixed number. If pushed, you could write it as -11/1.
No, it can be written as in improper fraction: 3/1
-0.11 = -11/100
-8/10 (negative eight tenths)
Yes, as it can be written as a fraction.
11/100
-4/1 (Negative four over one)
2.75 percent written as a fraction = 11/42.75 * 100/100 = 275/100 or 11/4 in fraction in lowest term
15 to the negative 5th power as a fraction can also be written as 1/15 to the 5th power.
Yes: negative 41 over 1, 41 over negative 1 or you can write 41 over 1 and put the negative sign to the left of the fraction bar
11/100
11/10
3/11