Mathematics, 05.06.2020 19:00, nuhaminbruk

Which expression means “the sum of 3 and a number a, divided by 5”?

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Mathematics, 21.06.2019 13:50, jungcoochie101

Aman steps out of a plane at a height of 4,000m above the ground falls 2,000m very quickly and then opens his parachute and slowly falls the remaining 2000m to the ground what height above the ground would be the best choice for a reference point

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Mathematics, 21.06.2019 15:10, sunshine52577oyeor9

Which of the following is a proper fraction? a. 9⁄8 b. 5⁄6 c. 7⁄3 d. 4⁄2

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Mathematics, 21.06.2019 15:20, aliceotter2007

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?

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Mathematics, 21.06.2019 15:30, lberman2005p77lfi