PLEASE HELP! (Correct answers only please)

Somone me i want to know what 18 hours out of 24 hours in a fraction

The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?

Determine the common ratio and find the next three terms of the geometric sequence. 10, 2, 0.4, a. 0.2; -0.4, -2, -10 c. 0.02; 0.08, 0.016, 0.0032 b. 0.02; -0.4, -2, -10 d. 0.2; 0.08, 0.016, 0.0032 select the best answer from the choices provided a b c d