Mathematics, 11.12.2019 21:31, aniyahrhs1213
An instructor gives an exam with sixteen questions. students are allowed to choose any eleven to answer.
(a) how many different choices of eleven questions are there? 1365 correct: your answer is correct.
(b) suppose six questions require proof and nine do not.
(i) how many groups of eleven questions contain four that require proof and seven that do not? 540 correct: your answer is correct.
(ii) how many groups of eleven questions contain at least one that requires proof? 1365 correct: your answer is correct. (iii) how many groups of eleven questions contain at most three that require proof? 176 incorrect: your answer is incorrect.
(c) suppose the exam instructions specify that at most one of questions 1 and 2 may be included among the eleven. how many different choices of eleven questions are there?
(d) suppose the exam instructions specify that either both questions 1 and 2 are to be included among the eleven or neither is to be included. how many different choices of eleven questions are there?
Answers: 1
Mathematics, 21.06.2019 17:50, farhan61
(01.02 lc) angle abc has point e on ray ba and point d on ray bc. points e and d are equidistant from point b. to bisect angle abc, which of the following needs to be identified for the construction? the distance between points e and d the point in the angle that is equidistant from points e and d the endpoint of rays ba and bc the point outside of the angle that is equidistant from points e and d
Answers: 1
Mathematics, 21.06.2019 18:50, rosas8
Astudent draws two parabolas on graph paper. both parabolas cross the x-axis at (-4, 0) and (6,0). the y-intercept of thefirst parabola is (0, –12). the y-intercept of the second parabola is (0-24). what is the positive difference between the avalues for the two functions that describe the parabolas? write your answer as a decimal rounded to the nearest tenth.
Answers: 2
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