Mathematics, 03.07.2020 09:01 nixki333
If x = 1 is a common root of ax² +ax + 2 = 0 and x² + x + b = 0 , then ab =
Answers: 3
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An airport in death valley is 60 feet below sea level, and an airplane is flying 2,000 feet above sea level. how many feet must the plane descend in order to land? a. 2060 b. 2000 feet c. 1940 feet d. 1880 feet e.1400 feet will mark as brainliest
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Mathematics, 22.06.2019 02:30
Lines a and b are perpendicular. if the slope of line a is 3, what is the slope of line b?
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Mathematics, 22.06.2019 03:40
Abottled water distributor wants to estimate the amount of water contained in 1-gallon bottles purchased from a nationally known water bottling company. the water bottling company’s specifications state that the standard deviation of the amount of water is equal to 0.02 gallon. a random sample of 50 bottles is selected, and the sample mean amount of water per 1-gallon bottle is 0.995 gallon a. construct a 99% confidence interval estimate for the popula-tion mean amount of water included in a 1-gallon bottle. b. on the basis of these results, do you think that the distributor has a right to complain to the water bottling company? why? c. must you assume that the population amount of water per bottle is normally distributed here? explain. d. construct a 95% confidence interval estimate. how does this change your answer to (b)?
Answers: 2
If x = 1 is a common root of ax² +ax + 2 = 0 and x² + x + b = 0 , then ab =...
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