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Mathematics, 31.05.2021 14:50 j015
(a) Anna drives 45km to work each day.
One day she drives the first 25km at an average speed of 82 km/h.
She takes 36 minutes to drive the remaining distance.
Calculate her average speed, in km/h, for the whole journey.
(b) Anna’s journey home is 47km, correct to the nearest kilometre.
One day her journey home takes 65 minutes, correct to the nearest 5 minutes.
Calculate the upper bound of her average speed, in km/h, for the journey home.
(c) The probability that Anna arrives at work on time or early on any given day is 5/8
Calculate the probability that she is late on both Monday and Tuesday.
Give your answer as a fraction.
thank you very much to those who answered. very appreciate it.
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Answers: 3
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(a) Anna drives 45km to work each day.
One day she drives the first 25km at an average speed of 82...
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