How do you figure out what 1/10 of 1,7000.000 km squared is?

To describe a sequence of transformations that maps triangle abc onto triangle a"b"c", a student starts with a reflection over the x-axis. how should the student complete the sequence of transformations to map triangle abc onto triangle a"b"c"? plz

Select the sequences that are geometric.

Solve the given system of equations. 2y= -x+9 , 3x-6= -15