Possible equations (choose the correct one): τ =10¹²/ H ; H = v / d . If gravity is unimportant and H equals 75 km/s/Mpc, then the age of the universe is about

Question

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We need to use the equation H = v/d, where v is the recessional velocity of distant galaxies and d is their distance from us, to determine H. The current best estimate for H is 70 km/s/Mpc, which gives an age of the universe of approximately 13 billion years.

Possible Equations (Choose the Correct One): τ =1012/ H ;

Possible Equations (Choose the Correct One): τ =10¹²/ H ;