What are three advantages of digital x-rays over film x-rays a. they do not use radiation b. they offer enchanted brightness c. they are less expensive d. more images can be taken as needed

Asubstitute is standing at the halfway line waiting to enter the match at the next stoppage of play the ball has gone over the touchline for throwing and referee allows for the substitution to substitute wants to take the throw-in does the substitute first have to enter the field of play before being allowed to take the throw-in