Answer quick In Helen's grade, 43 students are enrolled in health and 43 students are not. What percentage of the students in the school are enrolled in health?

Airline passengers arrive randomly and independently at the passenger-screening facility at a major international airport. the mean arrival rate is 10 passengers per minutes. compute the following probabilities. p(x = 4) p(x > 11)

Jacks bank statement shows an account balance of -$25.50. which describes the magnitude, of size, of the debt in dollars

The fence around a quadrilateral-shaped pasture is 3a^2+15a+9 long. three sides of the fence have the following lengths: 5a, 10a-2, a^2-7. what is the length of the fourth side of the fence?