7. Peter is trying to get his cat out of a tree in
his backyard. The cat is 12 feet above the
ground, and Peter has to put the base of his
ladder 9 feet away from the tree because of
mud. How long does the ladder need to be in
order to reach the cat?

You are cycling around europe with friends. a cycling festival is starting soon in barcelona. it will take 4.5 hours to cycle there. how many minutes in total is this?

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)

Which equation can be used to measure the density of water in a spherical water tank? let w represent the number of water particles within the region.