Answer:
Step-by-step explanation:
f(x)=x is a line.
The number could be <span>1843</span>
Answer:
It's not a function.
Step-by-step explanation:
We can use the vertical angle theorem which states that any two opposite angles are congruent. So, you can just set the two measures equal to each other and solve for x:




So, your answer is
20°.
Answer:
i don't know
Step-by-step explanation:
i don't know