А square has an area of 144cm? What is the length of one of its sides to the nearest tenth? A.72
B.36
C.12
D.14.4

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

I'll give brainliest if you answer right : )

Given that ot =5, xt=12, and ox= 13 is xy tangent to circle o at t? explain.