1. a scientist wants to figure out the winter migration patterns for canadian geese. which
method, a controlled experiment, a scientific investigation or a scientific model would be
most useful to set up? why?

If you answer right ill give brainliest, : )

Which of the expressions (on the photo document i inserted) together represent all solutions to the following equation? 8cos(12x)+4=-4 *the answer should be in degrees.* > i would like for someone to explain the process to find the solutions for this.

How many different three-digit numbers can be formed using the digits 1 comma 2 comma 9 comma 6 comma 4 comma 3 comma and 8 without repetition? for example, 664 is not allowed.