Answer:
15/40
Step-by-step explanation:

there's not enough information to solve
Answer:
31°
3
108°
Step-by-step explanation:
The measure of angle ADB is congruent to the measure of angle CBD, so it is equal to 31°.
4x = 12
divide by 4 on both sides and you are left with x=3
angle A is congruent to angle C, so it is equal to 108°.
Hope this helps!
Answer:radius =10 units
Step-by-step explanation:
Given
Equation of circle is given by

Now general equation of circle with center
with radius
is given by

Comparing
and
we get



Thus center is 
and radius 