Around the outside of a circle measures 360°. If arc ADB measures 250°, then arc AB measures 360-250 which is 110°. Because point C is the center of the circle, then angle ACB is a central angle. By definition of an arc intercepted by an angle, they are the exact same measure in degrees. So if arc AB = 110, then the measure of the angle ACB also measures 110.
I think the answer is a=2
Answer:



Step-by-step explanation:
we have
step 1
Group terms that contain the same variable, and move the constant to the opposite side of the equation

step 2
Factor 5 left side

step 3
Complete the square



step 4
Rewrite as perfect squares

step 5



step 6

hey mate here is you answer..! ;)
Answer:
x = 3/2
Step-by-step explanation:
38x = 10x + 42
=>38x - 10x = 42
=>28x = 42
=>x = 3/2
12÷(-24)
-1/2
-0.5
hope this helps u