LAISaJoyoi7to8 LAISaJoyoi7to8
  • 03-04-2017
  • Physics
contestada

Toni rows a boat at 4.5 km/per hour upstream and then turns around and rows 5.5 km/per hour back downstream to her starting point. if her total rowing time is 48 minutes for how long does she row upstream

Respuesta :

armada120
armada120 armada120
  • 03-04-2017
4.5x-5.5y=0, x+y=48
y=48-x, 4.5x-5.5(48-x)=0
4.5x+5.5x=48*5.5
10x=264
x=26.4 minutes
Answer Link

Otras preguntas

What is the approximate volume of a sphere if the surface area is 482.8 mm^2
explain why a person with thrombocytopenia purpurea shows many bruises or purple marks?
Which assessment question should the nurse ask the parents of a 1-year-old client to assess language development?
Which set of coordinates doesn’t represent the problem?
What is the measure,in degrees,of the shaded angle?
please help thank youu
A 24-ft pipe must be cut into three pieces. The longest piece will be twice as long as the shirtest piece; and the medium-sized piece will be 4 feet longer than
A court document is an example of a secondary source. Please select the best answer from the choices provided A.True B.False
Which sentence best states the main idea of this section of this chapter ? the city without us by alan weisman
What is machiavelli purpose for writing the prince