The vertices of quadrilateral pqrs are p(4, 5), q(6, 6), r(9, 4), and s(7, 2). write a paragraph proof to determine whether quadrilateral pqrs is a parallelogram.

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