The last set (choice D) is a subset of given set B.
The other 3 choices are wrong.
Answer:
a=4, b=1
Step-by-step explanation:
first y≠0
√126xy^5/ 32x^3= √63y^5/ax^b =
(3y^2√7y)/4x=3y^2√7y/ax^b
a=4 and b=1
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Answer:

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An angle bisector divides an angle in half, therefore:
m∠VUW ≅ m∠WUT
Set the expressions equal to each other:
4x + 6 = 6x - 10
Subtract 4x from both sides:
6 = 2x - 10
Add 10 to both sides:
16 = 2x
Divide 2 from both sides:
x = 8.
Substitute in the value of "x" into the equation for ∠WUT:
6(8) - 10 = 48 - 10 = 38°.