2a+3c=56.00 -2(a+4c=49.50) _______________ 2z+3c=56 -2a-8c=99 ____________ 0+-5c=-43 -5c=-43 c= -43/-5 child ticket=8.60 now take c and plug the answer into the first equation: 2a+3c=56, 2z+3(8.60)=56, 2z+25.80=56, 2a=56-25.80, 2a= 30.20, a=30.20/2, adult tickets =15.10
When the sides are the same then the triangles are congruent. because they all have exactly the same sides. because the two triangles do not have exactly the same sides.