Answer:
The value of x=4.5
Step-by-step explanation:
4.5+x=9
or, x=9-4.5
or, x=4.5
Answer:

Step-by-step explanation:
The picture of the question in the attached figure
we have that
-----> given problem
so
------> by central angle
we know that
The triangle UZV is an isosceles triangle
because
ZU=ZV=radius
so
-----> bases angle of the isosceles triangle
Remember that
The sum of the internal angles of any triangle must be equal to 180 degrees
so

substitute and solve for m<ZUV

Find the measure of angle YUV
we have that
------> by complementary angles
substitute the given value and solve for m<YUV

Answer:
I think the answer will be 20. It is oppsite sides and the lines look even. The area is small as well. So I think 20˙ will be the best option.