Me with this answer emily has a bowl of raspberries and blackberries. there are 4 more raspberries than blackberries, and there are 8 berries in all. how many blackberries does emily have?

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?

Points a, b, and c form a triangle. complete the statements to prove that the sum of the interior angles of triangle abc is 180

If a flying disk is 139 meters in the air and travels at an average of 13 m/s how long is it in the air