Which values for A and B will create infinitely many solutions for this system of equations? A x minus y = 8. 2 x + y = B. A = 2, B = 8 A = negative 2, B= 8 A = 2, B= negative 8 A = negative 2, B= negative 8

Need ! give step by step solutions on how to solve number one [tex]\frac{9-2\sqrt{3} }{12+\sqrt{3} }[/tex] number two [tex]x+4=\sqrt{13x-20}[/tex] number three (domain and range) [tex]f(x)=2\sqrt[3]{x} +1[/tex]

What is the value of x in the diagram below?

Find the area of the regular hexagon if a side is 20 cm.