Mathematics, 12.11.2020 16:50 lbbeanss
In an earlier lesson, you saw the equation `V+F-2=E`, which relates the number of vertices, faces, and edges in a Platonic solid. Write an equation that makes it easier to find the number of vertices in an icosahedron, which has 30 edges.
Answers: 2
Mathematics, 21.06.2019 19:40
The weights of broilers (commercially raised chickens) are approximately normally distributed with mean 1387 grams and standard deviation 161 grams. what is the probability that a randomly selected broiler weighs more than 1,425 grams?
Answers: 2
Mathematics, 22.06.2019 03:10
If the alternate hypothesis of an experiment is “the true mean height of the giraffes is more than 15 feet” what is the null hypothesis?
Answers: 1
Mathematics, 22.06.2019 04:20
The weibull distribution is widely used in statistical problems relating to aging of solid insulating materials subjected to aging and stress. use this distribution as a model for time (in hours) to failure of solid insulating specimens subjected to ac voltage. the values of the parameters depend on the voltage and temperature; suppose α = 2.5 and β = 190. (a) what is the probability that a specimen's lifetime is at most 250? less than 250? more than 300? (round your answers to four decimal places.) at most 250 less than 250 more than 300 (b) what is the probability that a specimen's lifetime is between 100 and 250? (round your answer to four decimal places.) (c) what value is such that exactly 50% of all specimens have lifetimes exceeding that value? (round your answer to three decimal places.) hr
Answers: 2
Mathematics, 22.06.2019 04:30
The polynomial 2x3 + 9x2 + 4x - 15 represents the volume in cubic feet of a rectangular holding tank at a fish hatchery. the depth of the tank is (x – 1) feet. the length is 13 feet.
Answers: 2
In an earlier lesson, you saw the equation `V+F-2=E`, which relates the number of vertices, faces, a...
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