the train from Geneva Switzerland to Milan Italy travels at 100 miles per hour and the two cities are 200 miles apart how long does the journey from Geneva to Milan take

1. what are the missing reasons in the proof 2. it's in the second picture and 3

Describe the possible echelon forms of the standard matrix for a linear transformation t where t: set of real numbers is onto.

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