If a = {1, 3, 5} and b = {1, 2, 3, 4, 5, 6} then a ∪ b ø {1, 2, 3, 4, 5, 6} {2, 4, 6}

{1,2,3,4,5,6}

Step-by-step explanation:

the U in between the A and B means and so you add both of

them together

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.