Is it possible to prove that the triangles are congruent?

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

Which inequality statement describes the two numbers on a number line? "? 7 and a number 5 units to the right of ? 7"

Find the ratios of the corresponding sides