Mathematics, 15.12.2019 19:31 akj2000
Yoko purchased a prepaid phone card for \$25$25 . long distance calls cost 2121 cents a minute using this card. yokoyoko used her card only once to make a long distance call. if the remaining credit on her card is \$20.59$20.59 , how many minutes did her call last?
Answers: 3
Mathematics, 21.06.2019 16:30, haleylecompte
Mexico city, mexico, is the world's second largest metropolis and is also one of its fastest-growing cities with a projected growth rate of 3.2% per year. its population in 1991 was 20,899,000 people. use the formula p = 20.899e0.032t to predict its population p in millions with t equal to the number of years after 1991. what is the predicted population to the nearest thousand of mexico city for the year 2010?
Answers: 2
Mathematics, 21.06.2019 16:50, gesic2003
Rockwell hardness of pins of a certain type is known to have a mean value of 50 and a standard deviation of 1.1. (round your answers to four decimal places.) (a) if the distribution is normal, what is the probability that the sample mean hardness for a random sample of 8 pins is at least 51?
Answers: 3
Yoko purchased a prepaid phone card for \$25$25 . long distance calls cost 2121 cents a minute using...
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