Select the correct answer. Write (-2 − 2i) + (10 − 4i) as a complex number in standard form.

A.
-4 + 6i
B.
8 − 6i
C.
6
D.
12 − 6i

The hawaiian alphabet has 12 letters. how many permutations are posible for each number of letters?

Asocial networking site currently has 400,000 active members, and that figure is predicted to increase by 32% each year. the following expression represents the number of active members on the site after t years.

Ascientist wants to use a model to present the results of his detailed scientific investigation. why would a model be useful? a )because the model makes the concepts easier to understand b) because the model is easy to put together and to use c) because the model prevents other scientists from asking questions d) because the model requires the audience to pay full attention to it i don't know what to choose because between a and d a is much more likely than d because it only wants to get the attention of the audience. i'm confuse.