A building has 15 floors of offices above ground and 3 floors below ground. Lucy
parks on the 3rd floor below ground
and has an office on the 10th floor. The
ground floor is floor zero. How many
floors must she go up from her car to
her office?

According to modern science, earth is about 4.5 billion years old and written human history extends back about 10,000 years. suppose the entire history of earth is represented with a 10-meter-long timeline, with the birth of earth on one end and today at the other end.

Question b of 10which of the following describe an angle with a vertex at a? check all that applyo a. labcов. савd dooo c_baco d. zacb

Asource of laser light sends rays ab and ac toward two opposite walls of a hall. the light rays strike the walls at points b and c, as shown below: what is the distance between the walls?