What the answer to this geometry problem

( -2 , 3 )

Step-by-step explanation:

When finding the new value reflecting over the Y axis just multiply the x value in ( x , y ) by a -1. In this case you would do 2 times -1.

first, you divide the triangle in two, tô form a retangle triangle. after, using pythagoream theorem:

18^2 = 14^2 + (x/2)^2

(x^2/4) + 196 = 324

x^2/4 = 324 - 196

x^2/4 = 128

x^2 = 512

x = √512

x = √2^9

x = 16√2 cm

i hope i you.