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Mathematics, 12.10.2019 20:30 jakobrobinette
Anton's family drove 216 miles to the lake averaging 48 mi/hr. on the return trip home they averaged 54 mi/hr. what was the total time that anton's family spent driving to and from the lake? a. 8 h b. 8.5 h c. 9 h d. 9.5 h
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Mathematics, 21.06.2019 15:20
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 19:00
Lucy is a dress maker. she sews \dfrac47 7 4 of a dress in \dfrac34 4 3 hour. lucy sews at a constant rate. at this rate, how many dresses does lucy sew in one hour? include fractions of dresses if applicable
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Anton's family drove 216 miles to the lake averaging 48 mi/hr. on the return trip home they averaged...
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