¿Cuál es la medida del ángulo x?
A.-130°
B.-100°
C.-50°
D.-40°

Step-by-step explanation:

x+50 = 180 because asim circle

x =180-130

x=150

step-by-step explanation:

to determine whether a given function is even, we simply substitute x with -x in the expression. if the result after simplification is identical to the original equation, then the function is said to be even other wise odd.

f(-x) = (-x)^2 - (-x) + 8

      = x^2 + x +8

the resulting function is not identical to the original one;

f(-x) ≠ f(x)

therefore, f(x) is not an even function

sorry i really don't know what tiles and steps you are referring to

step-by-step explanation: