Find two numbers who’s geometric mean is 12

Factor completely. 4p^2 + 36p + 81 express the answer in the form (ap + b)^2

Write a fraction less than 1, which has a denominator of 6 and is greater than 3/4 plz answer !

Aball is dropped from a height of 10m above the ground. it bounce to 90% of its previous height on each bounce. what is the approximate height that the ball bounce to the fourth bounce?