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17 July, 13:03

What is the radius of a circle whose equation is (x + 5) 2 + (y - 3) 2 = 42? A).2 units b). 4 units c).8 units D).16 units

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  1. 17 July, 15:57
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    radius=4 units

    Step-by-step explanation:

    (x+5) ^2 + (y-3) ^2=4^2

    compare with (x-a) ^2 + (y-b) ^2=r^2

    radius=r=4
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