Which property allows you to write the expression [(3 + 7i) + (8 – 6i)] + (1+ 9i) as (8 – 6i) + [(3 + 7i) + (1 + 9i)]?

An advertising firm has an old computer that can prepare a whole mailing in 6 hours. with the of newer model the job is complete in 2 hours. how long would it take the newer model to do the job alone?

How do you create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1?

Elizabeth is using a sample to study american alligators. she plots the lengths of their tails against their total lengths to find the relationship between the two attributes. which point is an outlier in this data set?