Pls will give brainliest and 5star and plss
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Mathematics, 21.06.2019 18:00
14. (05.02 lc) what is the value of y in the solution to the following system of equations? (5 points) 2x + y = β4 5x + 3y = β6
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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.
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Mathematics, 21.06.2019 23:20
This graph shows which inequality? a β€ β3 a > β3 a β₯ β3 a < β3
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Mathematics, 22.06.2019 01:10
Use a standard normal table to determine the probability. give your answer as a decimal to four decimal places. β1.5< < 1.5)
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