Consider three independent experiments, whose probabilities for being finished within one hour are 0.9, 0.8 and 0.7, respectively. what is the probability that at most one experiment will be finished within one hour?

Find the volume of the described solid.the solid lies between planes perpendicular to the x-axis at x = 0 and x=7. the cross sectionsperpendicular to the x-axis between these planes are squares whose bases run from the parabolay=-31x to the parabola y = 30/x.a) 441b) 147c) 864d) 882