Answer:
x = 8
Explanation:
The sides of the polygon are similar, meaning each side corresponds with the same side of the smaller polygon.
ex. PQ≈TU , QR≈UV , etc.
Because of this the sides RS and VW are also similar, the polygon is simply being scaled down by 1.5
9÷1.5 = 6 , 6÷1.5 = 4
therefore the side length VW is a scaled down version of RS meaning you take the length of RS , which is 12 , and divide it by 1.5
12 ÷ 1.5 = 8
Hope this helped!