Which could be the side lengths of a right triangle?
30 cm, 60 cm, 90 cm
30 cm, 60 cm, 90 cm<...
Mathematics, 03.04.2021 05:00 brillamontijo
Which could be the side lengths of a right triangle?
30 cm, 60 cm, 90 cm
30 cm, 60 cm, 90 cm
45 cm, 45 cm, 90 cm
45 cm, 45 cm, 90 cm
52 cm, 165 cm, 173 cm
52 cm, 165 cm, 173 cm
58 cm, 62 cm, 189 cm
Answers: 1
Mathematics, 22.06.2019 00:30
Anew test for ra is being developed. the test is administered to 750 patients with ra and 750 without ra. for the sake of the question, assume the prevalence of ra in this population is 50%. of the 750 patients with ra, 575 have a positive result. of the 750 patients without ra, 150 have a positive result. what is the positive predictive value of the new test? a575/(575+150) b. 600/(600+ 150) c. 575/(575+125) d. 600/(600+ 125)
Answers: 2
Mathematics, 22.06.2019 02:20
There are two major tests of readiness for college: the act and the sat. act scores are reported on a scale from 1 to 36. the distribution of act scores in recent years has been roughly normal with mean ยต = 20.9 and standard deviation s = 4.8. sat scores are reported on a scale from 400 to 1600. sat scores have been roughly normal with mean ยต = 1026 and standard deviation s = 209. reports on a student's act or sat usually give the percentile as well as the actual score. the percentile is just the cumulative proportion stated as a percent: the percent of all scores that were lower than this one. tanya scores 1260 on the sat. what is her percentile (ยฑ 1)?
Answers: 1
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