Answer:
<AOC
<AOB
<BOC
Step-by-step explanation:
The central angles are formed at point O, which is the center of the circle.
All the central angles are marked in the attachment.
The central angles are
: 
. This is a right angle and it is 180 degrees.
:
:
5x+2y=7
7x-2y=5 its subtract not add
Answer:
18
Step-by-step explanation:
<span>y+3=7x
y =7x - 3
slope = 7</span>
X=55, since straight lines are 180°. Y=70, since the triangle is isosceles, and the 2 bottom Angles are equal. Z=125, since the 2 opposite angles(x and y) add up to 125°
