Mathematics, 22.06.2019 18:30 babygirlgabby2137
The speed of nitrogen molecules in the atmosphere (at 20? c) follows a normal distribution with a mean speed of 500 meters/second and a standard deviation of 50 meters/second. which conclusion does this information best support? a. 84% of the molecules have speeds between 450 meters/second and 550 meters/second. b. 68% of the molecules have speeds between 450 meters/second and 550 meters/second. c. 50% of the molecules have speeds between 450 meters/second and 550 meters/second. d. 34% of the molecules have speeds greater than 550 meters/second.
Answers: 1
Mathematics, 21.06.2019 15:30, allysongonzalezlove0
Two blends of tea are mixed to make a blend that will be sold at the fair. black tea sells for $2.20 per pound and orange pekoe tea sells for $3.00 per pound. how much of each should be used to obtain a 4lb blend selling for $2.50 per pound?
Answers: 1
Mathematics, 21.06.2019 17:30, nayellisoto15
Lance lived in portugal and brazil for a total of 14 months to learn portuguese. he learned an average of 130 new words per month when he lived in portugal, and an average of 150 new words per month when he lived in brazil. in total he learned 1920 new words. write a system of equations to represent the situation. use x to represent portugal, and y to represent brazil
Answers: 1
The speed of nitrogen molecules in the atmosphere (at 20? c) follows a normal distribution with a me...
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