How long is a train which passes a signal in twenty seconds at a speed of 108 km/h

The average number of vehicles waiting in line to enter a parking lot can be modeled by the function f left parenthesis x right x squared over 2 left parenthesis 1 minus x right parenthesis endfraction , where x is a number between 0 and 1 known as the traffic intensity. find the rate of change of the number of vehicles waiting with respect to the traffic intensity for the intensities (a) xequals0.3 and (b) xequals0.6.

Arectangular courtyard is 12 feet long and 8 feet wide. a tile is 2 feet long and 2 feet wide. how many tiles are needed to cover the courtyard?

If an object looks the same on both sides when divided by a plane, it has gos rotational symmetry. no plane of symmetry. o reflectional symmetry. o no axis of symmetry.