Plz this is due in 1 hour. 56a = 7/4. what is a?

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

Which of the choices shown could be used to prove that aacp=abcp ?

The ratio of the measures of the three angles in a triangle is 2: 9: 4. find the measures of the angels