(a)it takes 72 pounds of seed to completely plant a 10 -acre field. how many acres can be planted per pound of seed?
(b)a color printer prints 22 pages in 12 minutes. how many pages does it print per minute?

What is the common denominator for 3/5+3/4

The amount of energy it takes to lift a box might be a function of which of the following

Asmall (but heavy) particle placed in a glass of water will follow a zigzag motion because the particle will bounce off of the water molecules it meets. this is called brownian motion. a physicist simulates this on a computer, by varying the distance a particle can travel (called the mean free length), on average, before it collides with a water molecule and assigning the change in motion to be one of 8 directions, each with a similar probability. by running the simulated particle (with the same mean free length) many times she determines that it should take 15 seconds, on average, for the particle to fall to the bottom, with a standard deviation of 1.5 seconds. next she lets a real particle fall through a glass of water and finds that it took 18 seconds. what does she conclude, and why?