Quadrilateral ABCD is shown. Quadrilateral A B C D . Side A B has a length 2 y plus x, side B C has length 5 x plus 4 y, side C D has length 3 y plus 5, and side D A has length 7 x minus 2. Angle A B C has measure 55 a minus 3 degrees and opposite angle C D A has measure 4 a plus 9 degrees.

What must the values of m and n be for ABCD to be a parallelogram?

Given (1+cosx)/(sinx) + (sinx)/(1+cosx) =4, find a numerical value of one trigonometric function of x. a. tanx=2 b. sinx=2 c. tanx=1/2 d. sinx=1/2

Solve the following inequalities and show the solution on a number line. 3/4 (2x-7) ≤ 5

Sophia wrote an equation to represent the revenue of a movie theater for one day. she let x represent the number of child tickets sold and y represents the nunver of adult tickets sold. if a child ticket cost $4, an adult ticket cost $6, and the total revenue for the daybwas $420, which equation could sophia use to represent the number of chikd and adult tickets that were sold?