Vicente is sitting at his lifeguard station on the beach when he sees a swimmer signaling for help. The swimmer is 145 feet out to sea, on a straight line between the swimmer and the shore, and Vicente's station is 240 feet down the beach from the nearest point on shore to the swimmer. (See diagram, which is for illustrative purposes only and not to scale.) 145 240 Vicente can swim at a rate of 3 feet per second and can run at 6 feet per second along the beach. a. How far should Vicente run from his tower down the beach, before entering the water and swimming the rest of the way, to get to the swimmer as fast as possible? (If necessary, round result to 1 decimal place.) ft.

The airspeed indicator of an airplane reads 400 knots. There are no instrument or position errors. The airplane is flying at a pressure altitude of 25,000 feet. If the outside air temperature is minus 40 degrees Celsius, what is the true airspeed of the airplane?

A boat, which moves at 17 miles per hour in water without a current, goes 273 miles upstream and 273 miles back again in 34 hours. Find the speed of the current to the nearest tenth. The speed of the current is Enter DNE for Does Not Exist, oo for Infinity (Work area) Distance Rate Time Upstream Downstream Total Question Help: Message instructor Submit Question miles per hour.

A ship is sailling at 5 knots (nautical miles per hourlon