Answer:
A
Step-by-step explanation:
Becaus it is
Os números que não são racionais são os da opção C)
2x + 2x + x = 180°
5x = 180°
x = 36° (C)
Step-by-step explanation:
f°g=




if the denominator is zero the number is undefined which makes it not in the domain of the function
set
equal to 0
the values for x is 0 or 6
so the only value that is not in the domain of f°g is 0 and 6
Hope that helps :)
The answer is D, this is because 9 times 12 times 18 equals to 1944 that times 1/2 basically means divided by two if you divide 1944 by 2 you get 972.