2. determine whether or not each of the following sets of numbers is a ring under ordinary addition and multiplication. a) r- the set of positive integers and zero b) r knln e z, k a fixed positive integer)

Which of the following correctly justifies statement four of the two column proof? a. corresponding angles theorem b. transitive property of equality c. vertical angle theorem d. substitution property of equality

A. what does the point (4, 122) represent? b. what is the unit rate? c. what is the cost of buying 10 tickets?

Ineed to know the ordered pairs for this equation i need the answer quick because it’s a timed test