Write expression using the distributive property to find the product of 7 times 63

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 statements about these triangles is true

Iam a rectangle. my perimeter is 60 feet. how much are do i cover?