Respuesta :

Answer:

21.

Step-by-step explanation:

RT and QS are diagonals of the rectangle and are equal in length.

5x + 1 = 6x - 3

-x = -4

x = 4

So QS = 6(4) - 3

= 21.

Answer:

21 is the answer

Step-by-step explanation:

RT = QS

5x + 1 = 6x – 3

4 = x

QS = 6(4) – 3 = 21