If f(p) = f(r) = 4, calculate the value of p -r if f < 0​

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?

Which of these numbers of simulations of an event would be most likely to produce results that are closest to those predicted by probability theory? 15, 20, 5, 10

What is the best approximation for the area of a circle with a radius of 4 m ? use 3.14 to approximate pi