Substitution method
x=2y
2x+5y=4...
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Mathematics, 21.06.2019 18:00
In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.
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Mathematics, 21.06.2019 23:00
700 miles the train takes 5 hours to a travel the distance at what unit rate is the train traveling?
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Mathematics, 22.06.2019 01:10
If the probability of an event happening is 65% then the probability this event does not occur?
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Mathematics, 22.06.2019 01:40
Agroup of student volunteers participates in a study designed to assess several behavioral interventions for improving output in a repetitive task. prior to the beginning of the study, all volunteers unknowingly observed, and their output is measured. at the beginning of the study, prior to any intervention, the volunteers perform the same task under the observation of a study administrator, and their overall output increases. which of the following terms describes this phenomenon? a. simpson's paradox b. hawthorne effect are d. novelty effect d. pygmalion effect e. observer-expectancy effect
Answers: 1
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