There are 1200 students at Sophie’s school. One student’s name will be drawn at random to win a new bike. Hannah and Ethan are S
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so, that's the equation of the circle, and that's its center, any point "ON" the circle, namely on its circumference, will have a distance to the center of 6 units, since that's the radius.
well, the distance from the center to A is 1, namely is "inside the circle".
notice, the distance to B is exactly 6, and you know what that means.
notice, C is farther than the radius 6, meaning is outside the circle, hiking about on the plane.
x = 10
The way to solve this one - step equation is to divide by 50 on both sides to get x by itself :
50x=500
x = 10