The value of y in rectangle QRST is 1
Explanation:
A Rectangle is a quadrilateral with opposite sides equal and parallels among several of its other features. Its other features include opposite ends meet at right angle and diagonals are equal
In the given data the sides are "11y+9" "19y+28" and "20y"
Since for rectangle opposite sides are equal
hence 11y+9 must be equal to 20y
11y+9=20y -- equation 1
rearranging the equation we get,
9y=9 (transferring 11y to the right side of the equation)
Therefore y=1
Hence y=1 in the given rectangle QRST