Determine if the set is well defined or not well defined. The set of the five worst U. S. presidents

Plzzz i beg u so much asaaaap ! what is the slope of this line? enter your answer in the box.

Acarnival sold tickets for $1.50 for adults and $1.00 for students. there were 54 tickets sold for a total of $70.50. write a system of equations to represent the number of adult tickets,x, and the number of student tickets,y. find the solution and explain what it means. i'll you if you me

The following division is being performed using multiplication by the reciprocal find the missing numbers is 5/12 divided by x/3 equals 5/12 times x/10 equals 1/x