Radius AZ is a perpendicular bisector of chord XR. What is the measure of <XAR?

100°
90°
80°
40°

the answer is 80,

Step-by-step explanation:

because AX =AR (the radii of the same circle) hence it is an isosceles triangle then the opposite angles would be equal, therefore angle X =angle R. So, 50 +50 is 100 and 180 -100 is 80(angle sum property)

the answer is d

step-by-step explanation:

y+3=-4(x-2)

y+3=-4x+8

  -3         -3  

y=-4x+5

by definition, an arc subtended by a central angle of some given measure has the same measure. so .