Which of the sets of ordered pairs represents a function? A = {(1, −5), (8, −5), (8, 7), (2, 9)} B = {(7, −4), (7, −2), (6, −3), (−9, 5)}

A

Step-by-step explanation:

Hello There!

In order for a set of ordered pairs to represent a function none of the x values can repeat

In answer choice A each x value has a different y value so A is probably the answer

In answer choice B the x value 7 repeats therefore the set of ordered pairs do not represent a function

So we can conclude that the answer is A

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation:

i think asking google will you get the answer to that question