Alguien sabe que números hay entre el 0.55 y 0.56 ayuda

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]

1yd 1 ft = 1 1/12 1 1/3 1 1/2 1 1/6

Y= 4x + 3 y = - 1 4 x - 5 what is the best description for the lines represented by the equations?