The first group consisted of 5 students and the second group consisted of 3 students. If the mean time of the first group was 16.65 seconds and the overall mean time for both groups of students was 13.26 seconds, determine the mean time for the second group of students.

You will get 25 points an image of a rectangular prism is shown below: part a: a cross section of the prism is cut with a plane parallel to the base. what is the name of the shape created by the cross section? explain your answer. (5 points) part b: if a cross section of the prism is cut perpendicular to the base, what would be the shape of the resulting cross section? explain your answer. (5 points)

Enter the number of complex zeros for the polynomial function f(x) = x 4+ 5x² +6

Solve the given system of equations. 2y= -x+9 , 3x-6= -15