Answer
y = 32
Work Step by Step
The quadrilateral is a rectangle since it has a right angle.
Since this rectangle has congruent adjacent sides, it is a square.
The diagonals bisect the angles, which are right angles.
9x = 45 ; x = 5 ; 6z = 45 ;
z = 45/6 = 7.5
diagonals are perpendicular:
3y - 6 = 90
3y = 90 + 6
y = 96/3
y = 32
