Astatistics instructor wants to measure the effectiveness of his teaching skills in a class of 75 students (n = 75). he selects students by waiting at the door to the classroom prior to his lecture and pulling aside every third student to give him or her a questionnaire. a. is this sample design an example of random sampling? explain. b. assuming that all students attend his class that day. how many students will the instructor select to complete his questionnaire?

(1,4) is on graph of f(x)

f(1) = 4

so 1/4 f(x)

1/4 f(1)

1/4. ×4

1

so point for function 1/4. f(x) is (1,1)

step-by-step explanation:

their are no angles. sorry cant .

step-by-step explanation:

points a and b are equidistant from the desired line, so the line you find by using them will go through point r.

using points other than a and b will give the desired line only if they are equidistant from r. if they are randomly located, the perpendicular line you create will not necessarily go through point r, hence will not be a solution to the problem.