What is the midpoint of this segment ??

So to get the midpoint we need to get the x's add them and divide by 2 and do the same for y. So we have -1 and 7, add them and we get 6/2 = 3. The x's midpoint is 3. Now we need to do for y.  2+3 = 5. 5/2 is y. So answer is

brainliest?

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.