Find all real solutions of tan(2x)= -tan(x)

During a bike challenge riders have to collect various colored ribbons each 1/2 mile they collect a red ribbon each eighth mile they collect a green ribbon and each quarter mile they collect a blue ribbion wich colors of ribion will be collected at the 3/4 markrer

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

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*