1+1.If you know what I’m trying to do

Which of the following are accepted without proof in a logical system? check all that apply.

What is the absolute value of the complex number -4-sqrt2i

Select the correct answer from each drop-down menu. a system of equations and its solution are given below. system a complete the sentences to explain what steps were followed to obtain the system of equations below. system b to get system b, the equation in system a was replaced by the sum of that equation and times the equation. the solution to system b the same as the solution to system a.]