Answer:
Complement of a Set If U is a universal set and A is a subset of U, then the set of all elements in U that are not in A is called the complement of A and is denoted Ac.
Step-by-step explanation:
Answer:
12.5
Step-by-step explanation:
Answer:
the correct answer is 4 and 21
Answer: 1.71
Step-by-step explanation: Think of a number line...numbers increase to the right & decrease to the left.