Aleena, a student, is going to complete a final exam next week. The exam has 30 questions. The teacher's recommendation is that students take between 2 and 2.5 minutes per question. If a student follows the teacher's recommendation, about how much time will it take Aleena to complete the exam? A. Between 30 and 45 minutes

B. Between 20-30 minutes

C. Between 10-15 minutes

D. Between 60 and 75 minutes

Determine the mean and variance of the random variable with the following probability mass function. f(x)=( 729divided by 91) (1 divided by 9) superscript x baseline comma x equals 1,2,3 round your answers to three decimal places (e.g. 98.765).

Two language majors, anna and megan, took exams in two languages. anna scored 85 on both exams. megan scored 74 on the first exam and 85 on the second exam. overall, student scores on the first exam had a mean of 82 and a standard deviation of 4, and the second exam scores had a mean of 71 and a standard deviation of 13. a) to qualify for language honors, a major must maintain at least an 85 average across all language courses taken. so far, which of anna and megan qualify? b) which student's overall performance was better?

The statements below can be used to prove that the triangles are similar. ? △abc ~ △xyz by the sss similarity theorem. which mathematical statement is missing? ∠b ≅ ∠y ∠b ≅ ∠z