What is the distance between 2 and negative 2

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.]

Rewrite so the subject can be y in the formula d=m-y/y+n

What is the simplified form of square root of 400 to the 100th power ?