Respuesta :

breadsticksandcheese

Answer:

x = 30

Step-by-step explanation:

because the ray bisects ∠PRS, the two angles have the same measure.

set them equal to each other: x + 40 = 3x - 20

add 20 to both sides: x + 60 = 3x

subtract x: 2x = 60

divide by 2: x = 30

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