81/15 + -14/5 plz it is for a test

13/5 and/or 2.6

Step-by-step explanation:

2.6

Step-by-step explanation:

81/15 -> 5.4

-14/5 -> -2.8

when you add a negative it is the same as subtracting the positive value (positive 2.8) and you get 2.6 :)

mark other person 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.