There are two lines from the center of the circle labeled 5.
The lines at 90 degrees from the 5 are chords. Because both lines are the same distance from the center they are the same length.
The one on the top is labeled as 9, so the line on the bottom is also 9 units long.
X is half the length, so would b 9 /2 = 4.5 units long.
Yes that is correct to my knowledge
To write this as an improper fraction you would multiply 9 by 1 then add your product to the numerator.
9x1=9
9+8=17
17/9
Hoped this helped!
1000 meters in a kilometer
500 meters in 1/2 kilometer