I need help with question number 1 every thing has to equal to 20 for the total of students in the table please help

What is the slope simplify your answer and write it as a proper fraction, improper fraction, or integer

Successful implementation of a new system is based on three independent modules. module 1 works properly with probability 0.96. for modules 2 and 3, these probabilities equal 0.95 and 0.90. compute the probability that at least one of these three modules fails to work properly.

1. the wheeling bridge in west virginia is about 307 meters long. if you walk with a stride of about meter, about how many steps would it take you to cross this suspension bridge?