Question: solving linked differential eqautions

I have a set of diffferential equations: 

> U := diff(X(x), x) = -10*(1-5*T(x)^2)^(1/2)*x*X(x)/(X(x)*x+R(x)), diff(R(x), x) = 10*(1-5*T(x)^2)^(1/2)*x^2*X(x)/(X(x)*x+R(x));
                                       (1/2)         
                          /          2\              
           d           10 \1 - 5 T(x) /      x X(x)  
          --- X(x) = - ----------------------------, 
           dx                 X(x) x + R(x)          

                                       (1/2)        
                          /          2\       2     
             d         10 \1 - 5 T(x) /      x  X(x)
            --- R(x) = -----------------------------
             dx                X(x) x + R(x)        

and initial conditions:

> initial; R(x) = 0, X(x) = 10;

and i want to solve and then plot them and also T(x) against x/x_initial, is this possible? 

I again apologise for not being very helpful earlier.