At the movie theatre, child admission is $5.20 and adult admission is $8.50. on sunday, four times as many adult tickets as child tickets were sold, for a total sales of $1332.80. how many child tickets were sold that day?

Astudent received the following grades last semester. find the student's semester grade point average. an a is algebra (3 credits), a b in history ( 3 credits), a in sociology ( 3 credits) a d in english ( 3credits) and a c in seminar ( 2credits). an a is worth 4 points, a b is worth 3 points a c is worth 2 points and a d is worth 1 point.

Solve the system of equations. y= 2x y= x^2 - 15

Sam claims that cos x =sin y if x and y are congruent angels. is sam correct ?