The diameter of spaceship earth, in epcot is 165 feet. what is the radius of spaceship earth?

Which of the fallowing best completes the sequence 12,8,5, a) 1 b) 2 c)4 d)0

Find the length of the following tangent segments to the circles centered at o and o' whose radii are 5 and 3 respectively and the distance between o and o' is 12. what is the tangent segment of cd?

The ratio of rock songs to dance songs on jonathan’s mp3 player is 5: 6. the total number of rock and dance songs jonathan has is between 101 120. how many rock songs does he have?