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Mathematics, 21.06.2019 19:30
Each cookie sells for $0.50 sam spent $90 on baking supplies and each cookie cost $0.25 to make how many cookies does sam need to sell before making a profit formula: sales> cost
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Mathematics, 21.06.2019 20:30
In priyas math class there are 10 boys and 15 girls. what is the ratio of boys to girls in priyas math class? express your answer as a decimal
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Mathematics, 21.06.2019 21:00
Choose the equation below that represents the line that passes through the point (2, 4) and has a slope of 3. a) y β 4 = 3(x β 2) b) y β 2 = 3(x β 4) c) y + 4 = 3(x + 2) d) y + 2 = 3(x + 4)
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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?
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