Leila is choosing a 2-letter password from the letters a, b, and c. the password cannot have the same letter repeated in it. how many such passwords are possible?

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

He that is measured at 220° is a reflex angle. the opposite angle is obtuse. find the measure of obtuse .

One of every 20 customers reports poor customer service on your company’s customer satisfaction survey. you have just created a new process that should cut the number of poor customer service complaints in half. what percentage of customers would you expect to report poor service after this process is implemented? 1.) 5% 2.) 10% 3.) 2% 4.) 2.5%