Mathematics, 24.04.2020 16:00 Nicaragua505
An instructor gives an exam with seventeen questions. Students are allowed to choose any twelve to answer. (a) How many different choices of twelve questions are there? 6188 Correct: Your answer is correct. (b) Suppose seven questions require proof and ten do not. (i) How many groups of twelve questions contain five that require proof and seven that do not? 2520 Correct: Your answer is correct. (ii) How many groups of twelve questions contain at least one that requires proof? 6188 Correct: Your answer is correct. (iii) How many groups of twelve questions contain at most three that require proof? 371 Correct: Your answer is correct. (c) Suppose the exam instructions specify that at most one of questions 1 and 2 may be included among the twelve. How many different choices of twelve questions are there? 6279 Incorrect: Your answer is incorrect. (d) Suppose the exam instructions specify that either both questions 1 and 2 are to be included among the twelve or neither is to be included. How many different choices of twelve questions are there? 1092 Incorrect: Your answer is incorrect.
Answers: 2
Mathematics, 21.06.2019 18:10
Which of these tables represents a non-linear function?
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Mathematics, 22.06.2019 03:30
Find the solution set for this equation: t^2+7t=0 separate the two values with a comma.
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Mathematics, 22.06.2019 03:50
Ken leaves work 20 minutes late. he decides to make up time by taking the toll road instead of side streets. he can travel three times faster by taking the toll road. create an equation to represent his total travel time, including wait time, where x is the number of minutes the drive was expected to take
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Mathematics, 22.06.2019 04:30
Given the numbers 6, 8, 10, and 20, what number when added would make the average of all five numbers 12? 1. (4) 2. (10) 3. (16) 4. (22) 5. (28)
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An instructor gives an exam with seventeen questions. Students are allowed to choose any twelve to a...
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