Provide an example of an operation that is commutative. provide an example of an operation which is not commutative

In an experiment you are to flip a two sided coin 100 times and record 55 heads up and 45 tails up determine the theoretical and experimental probability of getting a heads up in the experiment.

Multiplying an even number of negative numbers gives an answer that is choose from:

Find the slope of the line below . enter your answer as a fraction or decimal. use a slash mark ( / ) as the fraction bar if necessary