The sum of angles in a triangle must always be 180 degrees. So you can create the equation 3x+2v+55=180. When you solve that, you will get v=25 degrees.
The A.) MURRAY RIVER is the only Australian river to flow year-round.
It is the longest river in Australia. Its length is 2,508 kilometer or 1,558 miles. It borders the states of Australia; namely, New South Wales,Victoria, and South Australia.
