Can anyone slove this question pls

With these: 18/36 = 1/? missing number change 1 5/8 to improper fraction. change 19/5 to a mixed number.

Both the red and blue line segments stretch from the center of the circle to a point on the circle. the length of the blue segment is 5. how long is the red line segment?

What are the solutions of the system? solve by graphing. y = -x^2 - 3x + 2 y = -2x + 2