if a 75kg sofa is on the 50th floor of a luxury apartment building. in apartment #5013 (300m up). The door of the apartment is 200ft to the left as you exit the elevator. what is the potencial energy of the sofa.

Rachel reads 1/5 of the pages of a book plus 12 pages on the first day. on the second day, she reads 1/4 of the remaining pages plus 15 pages. on the third day, she reads 1/3 of the remaining pages plus 18 pages. on the fourth day, she reads the remaining 70 pages. how many total pages are in the book?

What are the relative frequencies to the nearest hundredth of the columns of the two-way table? a b group 1 102 34 group 2 18 14

Which is a graph of a proportional relationship?