Find a counterexample to show that the following statement is false. for all sets a and b, (a ∪ b)c = ac ∪ bc. assume that all sets are subsets of a universal set u = {1, 2, 3, 4, 5}. (enter your answer as a comma-separated list in the form a, b where both a and b are written in set-roster notation. enter empty or ∅ for the empty set.)

Aclassmate thinks that solving a system by graphing gives an exact answer when the lines appear to cross at a grid point, but only an approximate answer when they don't. explain why this isn't true.

Answer asap and if you do you will get brainliest. catherine buys a gallon of ice cream from the store. after taking it home, she eats a fifth of a gallon of ice cream. her sister eats some of the ice cream as well. if two-thirds of the original amount of ice cream is left, then what fraction of a gallon of ice cream did her sister eat?

Write each improper fraction as a mixed number. 9/4. 8/3. 23/6. 11/2. 17/5. 15/8. 33/10. 29/12.