SOLUTION: In the xy-coordinate plane, circle A is centered at the origin and has a radius of 5. For how many points on circle A is the sum of the x coordinate squared and the y coordinate sq

Algebra ->  Linear-equations -> SOLUTION: In the xy-coordinate plane, circle A is centered at the origin and has a radius of 5. For how many points on circle A is the sum of the x coordinate squared and the y coordinate sq      Log On


   



Question 536928: In the xy-coordinate plane, circle A is centered at the origin and has a radius of 5. For how many points on circle A is the sum of the x coordinate squared and the y coordinate squared greater than 20?
a) 0
b) 4
c) 5
d) 8
e) more than 8

Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
We want where is the set of all points on A. Hence, all of the points on circle A satisfy (infinitely many points) so the answer is e).