27 502 tickets were sold for a ball game at the stadium.34 206 were printed .how many ticket were sold?​

Find the solution of this system of equation -7x+y=-20 9x-3y=36

Find the perimeter of the triangle with vertices  d(3, 4),  e(8, 7), and  f(5, 9). do not round before calculating the perimeter. after calculating the perimeter, round your answer to the nearest tenth.  

Which geometric principle is used to justify the construction below?