book Maths Puzzle Numerical Ability

1. determine the radius of the following cricle, then graph it identifying where its center is located. (x+2)2 + (y-6)2 = 81

2. find a and b, the foci and identify the major ax

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book Other Question

A private airplane leaves an airport and flies due south at 192 km/h. Two hours later a jet leaves the same airport and flies due south at 960 km/h. When will the jet overtake the the square root of 9m^2n^2 + 2 times the square root of m^2n^2 - 3mn