Computers and Technology, 26.06.2020 15:01 camilacarrielh15
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Computers and Technology, 22.06.2019 06:00
Which of the following is a way that advancements in technology improve humans' ability to measure air quality and protect human health? a. air quality data gathered by new instruments can be used to reduce exposure to pollutants. b. new technologies enable natural and human-made pollution sources to be located and monitored. c. air quality data gathered by new instruments can be used to predict trends in pollution over time. d. new technologies allow governments to make informed decisions about the regulation of pollution. (choose more than one)
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Computers and Technology, 22.06.2019 13:30
Write lines of verse that rhyme to remember the following information: acid rain is a type of air pollution caused by chemicals in the air.
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Computers and Technology, 23.06.2019 06:00
When is a chart legend used a. all the time b. whenever you are comparing data that is the same c. whenever you are comparing multiple sets of data d. only for hand-drawn charts
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Computers and Technology, 23.06.2019 10:20
Suppose there is a relation r(a, b, c) with a b+-tree index with search keys (a, b).1. what is the worst-case cost of finding records satisfying 10 < a < 50 using this index, in terms of the number of records n1, retrieved and the height h of the tree? 2. what is the worst-case cost of finding records satisfying 10 < a < 50 and 5 < b < 10 using this index, in terms of the number of records n2 that satisfy this selection, as well as n1 and h defined above? 3. under what conditions on n1 and n2, would the index be an efficient way of finding records satisfying the condition from part (2)?
Answers: 1
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Mathematics, 07.11.2019 04:31
World Languages, 07.11.2019 04:31
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Mathematics, 07.11.2019 04:31
Mathematics, 07.11.2019 04:31
Mathematics, 07.11.2019 04:31
Mathematics, 07.11.2019 04:31
Mathematics, 07.11.2019 04:31
Mathematics, 07.11.2019 04:31