The denominator is in the bottom of a fraction bar while the numerator is on the top.
7/19=14/38.. Hope this helped! And.. I believe you asked this question 3 times now..
A reflection followed by translation, a translation followed by rotation, and a rotation followed by reflection all preserve congruence.
Anything that changes the size of the figure does not preserve congruence. The other three choices all have a dilation in them; a dilation changes the size of a figure. Therefore it does not preserve congruence.
-4, -1, -2/9, square root if 15(3.9 rounded), 6
