Situation:
a 38 gram sample of a substance that's
used to sterilize surgical instruments has
a k-value of 0.113.

Astick 2 m long is placed vertically at point b. the top of the stick is in line with the top of a tree as seen from point a, which is 3 m from the stick and 30 m from the tree. how tall is the tree?

You're locked out of your house. the only open window is on the second floor, 25 feet above the ground. there are bushes along the edge of the house, so you will need to place the ladder 10 feet from the house. what length ladder do you need to reach the window?

There were 25 students who answered to a survey about sports. four-fifths of them like football. how many students like football?