SOMBODY PLZ HELP
Which is the independent value and which is the dependent value. P=2b

Which expression can be used to determine the slope of the line that passes through the points -6, three and one, -9

Jack has a piece of red ribbon that is two times as long as his piece of blue ribbon. he says that he can use two different equation to find out how long his piece of red ribbon is compared to his piece of blue ribbon is. is he correct? explain his reasoning

Complex numbers multiply √-4 * √-25 and show all intermediate steps. alternative notation is sqrt(-4) * sqrt(-25).