Question

According to Hubble's law, the redshift (Z) of a receding galaxy and its distance r from earth are related as

Answer 1

HEYA MATE. .
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Hubble's law is a statement of a direct correlation between the distance (r) to a galaxy and its recessional velocity as determined by the red shift (Z). It is stated as Z = Hor, 

where Z = recessional velocity

Ho = Hubble constant and r = distance.
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