The probability of a student taking both spanish class and art class is 9/100 . the probability of a student taking art class is 3/10 what is the probability that a student takes spanish class given that the student takes art class?

Technicians have installed a center pivot, circular irrigator for a farm that covers 25 acres. a.) how long is the irrigation boom (in feet) from the center pivot to its farthest extent? b.) if the irrigation boom makes 4 full revolutions in a day, how many miles does the end of the boom travel in 5 days?