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If a galaxy contains a supernova that at its brightest has an apparent magnitude of +15, how far away is the galaxy? Assume that the absolute magnitude of the supernova is -14.
Hint: Use the magnitude-distance formula: d = 10(mv - My + 5)/5
Mpc

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$The apparent magnitude of the supernova, (m_{v}) = + 15 The absolute magnitude of the supernova, (M_{v}) = - 14$

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