Mathematics, 05.05.2020 04:46 cutegirl0987
Solve the problem by making up an equation. Jim can do all the work in an hour. Ben can do it in 40 minutes. How long will it take them to do all the work if they do it together?
Answers: 3
Mathematics, 21.06.2019 19:30
Tim's phone service charges $26.39 plus an additional $0.21 for each text message sent per month. if tim's phone bill was $31.64, which equation could be used to find how many text messages, x, tim sent last month?
Answers: 1
Mathematics, 21.06.2019 21:30
In a test for esp (extrasensory perception), a subject is told that cards only the experimenter can see contain either a star, a circle, a wave, or a square. as the experimenter looks at each of 20 cards in turn, the subject names the shape on the card. a subject who is just guessing has probability 0.25 of guessing correctly on each card. a. the count of correct guesses in 20 cards has a binomial distribution. what are n and p? b. what is the mean number of correct guesses in 20 cards for subjects who are just guessing? c. what is the probability of exactly 5 correct guesses in 20 cards if a subject is just guessing?
Answers: 1
Mathematics, 21.06.2019 22:20
Which strategy is used by public health to reduce the incidence of food poisoning?
Answers: 1
Solve the problem by making up an equation. Jim can do all the work in an hour. Ben can do it in 40...
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