The value of y varies inversely as x^2 and when x = 24, y = 15 . What is x when y = 13?
Varies Inversely: y = k / x2 ---> 15 = k / 242 ---> k = 8640
Equation: y = 360 / x2 ---> 13 = 360 / x2 ---> 13x2 = 8640
x2 = 8640/13
x = +/- sqrt( 8640/13 )