What is the additive inverse of –2 + 8i?

What is the result of adding the system of equations? 2x+y=4 3x-y=6

What is the circumference of a circle with an area of 50.24 cm²?

Aline passes through the points (5,4) and (2.1). part a.) what is the slope of the line that passes through these points? show work. part b.) what is the equation of the line that passes through these points. show work. part c.) where does the line intercept on the x& y axis? show work