4. En un salón de clase los alumnos tienen edades relativamente heterogéneas; hay 5 de 17 años, 10 de 19 años, 5 de 21 años, 7 de 22 años y cuatro de 25 años. El promedio de la de este curso es de aproximadamente

ION \( 1 B \)

4. Diketahui kubus ABCD.EFGH dengan panjang rusuk 2 cm . Titik M adalah titik potong garis \( A C \) dan garis BD. Jarak antara titik H dan titik M adalah ..... \( \sqrt{ } 2 \mathrm{~cm} \) \( \sqrt{ } 3 \mathrm{~cm} \) \( 2 \sqrt{2} \mathrm{~cm} \)

Three out of nine students in the computer club are getting prizes for first, second, and third place in a competition. How many ways can first, second, and third place be assigned? \( 9_{3}=\frac{91}{(9-3)!} \) 3 84 504 2048 4

DIVING You dive 21 feet from the surface of a lake in 7 seconds. (Section 1.4 and Section 1.5) a. What is the mean change in your position in feet per second? b. You continue diving. What is your position relative to the surface after 5 more seconds?

A local college student will be randomly selected to attend a leadership conference in Washington, D.C. There are 2020 local college students, of which \( 40 \% \) are male. 480 of the college students are graduate students, and half of the graduate students are female. Which of the following best represents the probability that the selected college student will be a male student or a graduate student?