Explanation
Correct answer: D.
Choice D is correct. It's given that triangle is similar to triangle . Therefore, each side of triangle is times its corresponding side of triangle , where is a constant. It follows that the perimeter of triangle is times the perimeter of triangle . It's also given that corresponds to and the length of is . Let represent the length of . It follows that . The table shows that the perimeters of triangles and are and , respectively. It follows that , or . Substituting for in the equation yields , or . Therefore, the length of is .
Desmos solution:
Note: The scale factor is the ratio of the perimeters, 333/37 = 9. Multiply TU by that scale factor to get XY.
Enter in Desmos:
Reviewed and rewritten by CookSAT
Why the other choices are wrong
Choice A
Choice A is incorrect and may result from conceptual or calculation errors.
Choice B
Choice B is incorrect. This is the length of , not the length of .
Choice C
Choice C is incorrect and may result from conceptual or calculation errors.