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24 March, 18:51

If (m, 1) is on a circle with center (8, 1) and radius 7, what is a value of m?

A) m=1

B) m=-1

C) m=14

D) m=-8=-+sqrt33

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Answers (1)
  1. 24 March, 21:14
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    A) m=1

    The equation for the circle is:

    (x-8) ^2 + (y-1) ^2 = 49

    If we take 'y' as 1, then

    (x-8) ^2 + 0 = 49

    x-8 = √49

    x = ±7 + 8

    x = 15 or x = 1
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