Mathematics, 21.02.2021 23:30 Perdikaris
A city's water supply is fluoridated by Adding NaF.
The desired concentration of F is 1.6ppm. How many
mg of NaF should be added per gallon of
treated water if the water supply is 0.2ppm in F-?​
Answers: 3
Mathematics, 21.06.2019 14:00
In the diagram, the measure of angle 9 is 85° which angle must also measure 85°?
Answers: 3
Mathematics, 22.06.2019 02:30
From a party ,lori made a fruit punch from 1 gallon of orange juice ,2 quarts of grape juice,5 pints of pineapple juice,and 12 cups of cranbarry juice order the juice from least to greatest amount used in the fruit punch
Answers: 3
Mathematics, 22.06.2019 02:30
An engineer is going to redesign an ejection seat for an airplane. the seat was designed for pilots weighing between 120 lb and 161 lb. the new population of pilots has normally distributed weights with a mean of 125 lb and a standard deviation of 28.1 lb. a)if a pilot is randomly selected, find the probability that his weight is between 120 lb and 161 lb.the probability is approximately? b. if 36 different pilots are randomly selected, find the probability that their mean weight is between 120 lb and 161 lb. the probability is approximately? c. when redesigning the ejection seat, which probability is more relevant? . part (b) because the seat performance for a single pilot is more important. b. part (b) because the seat performance for a sample of pilots is more important. c. part (a) because the seat performance for a sample of pilots is more important. d. part (a) because the seat performance for a single pilot is more important.
Answers: 3
A city's water supply is fluoridated by Adding NaF.
The desired concentration of F is 1.6ppm. How m...
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