Mrs. daly's reading classes were surveyed about their reading preferences. the data is summarized in the table below. 9th graders who prefer fiction- 35 9th graders who prefer nonfiction- 8 total of 9th graders- 43 10th graders who prefer fiction- 52 10th grader who prefer nonfiction- 12 total of 10th graders-64 total of students who prefer fiction-87 total of student who prefer nonfiction-20 total of students- 107 given that a student is in 9th grade, what is the probability that they prefer to read non-fiction novels based on this data? write your answer as a decimal rounded to the nearest hundredth.

What is the value of x? enter your answer in the box. x = two intersecting tangents that form an angle of x degrees and an angle of 134 degrees.

Which of the following is an irrational number

Exercise: counting committees 0.0/2.0 puntos (calificable) we start with a pool of n people. a chaired committee consists of k≥1 members, out of whom one member is designated as the chairperson. the expression k(nk) can be interpreted as the number of possible chaired committees with k members. this is because we have (nk) choices for the k members, and once the members are chosen, there are then k choices for the chairperson. thus, c=∑k=1nk(nk) is the total number of possible chaired committees of any size. find the value of c (as a function of n ) by thinking about a different way of forming a chaired committee: first choose the chairperson, then choose the other members of the committee. the answer is of the form c=(α+nβ)2γn+δ. what are the values of α , β , γ , and δ ?