Mathematics, 30.04.2021 16:50 belferfex
21 students in a dass wear spectacles. This is 60% of the total number of students in the class. What is the total number of students in the class?
Answers: 1
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Line gh passes through points (2, 5) and (6, 9). which equation represents line gh? y = x + 3 y = x – 3 y = 3x + 3 y = 3x – 3
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Mathematics, 21.06.2019 19:40
Afactory makes propeller drive shafts for ships. a quality assurance engineer at the factory needs to estimate the true mean length of the shafts. she randomly selects four drive shafts made at the factory, measures their lengths, and finds their sample mean to be 1000 mm. the lengths are known to follow a normal distribution whose standard deviation is 2 mm. calculate a 95% confidence interval for the true mean length of the shafts. input your answers for the margin of error, lower bound, and upper bound.
Answers: 3
Mathematics, 21.06.2019 19:50
Table which ratio is equivalent to 3: 7? 6: 7 3: 21 24: 56 15: 30
Answers: 1
21 students in a dass wear spectacles. This is 60% of the total number of
students in the class. W...
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