P is inversely proportional to d^2
P= 10 000 when d= 0.4
Find the value of P when d=0.8

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)

Find the value of the variable and the length of each secant segment.

Use the elimination method to solve the systems of equations.choose the correct ordered pair. 7x+4y=39