the number of boys in a school is 120. if the ratio of boys ro girls is 5:7 find the total number of students in the school.​

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]

Which statement about perfect cubes is true

The variable in a relation who’s value depends on the value of the independent variable is called what?