How do I know when two fractions are equivalent​

60 2(x + 2) in the diagram, gef and hef are congruent. what is the value of x?

Select the point that is a solution to the system of inequalities. y< =-x+3 y=x^(2)-3x

Nina has prepared the following two-column proof below. she is given that ∠oln ≅ ∠lno and she is trying to prove that ol ≅ on. triangle oln, where angle oln is congruent to angle lno nina made two errors in the proof. identify and correct the errors.