Answer:
19. C
20. D
21. B
22. A
Step-by-step explanation:
If an angle is subtended from an arc and it goes to the opposite end of the circle, the angle is HALF of the measure of the arc. If it goes to the center, it is SAME measure as arc.
19.
Arc BC is DOUBLE of Angle BAC, so
78 * 2 = 156
Answer is C
20.
Arc BEC is DOUBLE of Angle BAC, so
114 * 2 = 228
Answer is D
21.
Angle ABC is HALF of Arc AC, so
Angle ABC = 110/2 = 55
Answer is B
22.
Angle ABC is HALF of Arc AC, so
Angle ABC = 218/2 = 109
Answer is A
Given equation is 
Now it says to find f(2)
that simply means plug x=2 because we see that 2 is written in place of x in f(x) and f(2)
Hence final answer is
<u>Option D
</u>
<u>Answers: </u>
In the given identities a + 0 = 0 + a will represent the additive identity.
<u>Solution: </u>
The additive identity says that if you add a real number to zero or add zero to a real number, then you get the same real number back. This can be written as,
A + 0 = A
The number zero is known as identity element or the additive identity.
Let us understand the additive property using a example:
Let us consider the case 0 + 40 = 40, here 0 represents the identity value.
When we add zero to real number 40, we get the result as 40 which is the same number.
Hence, on the given options, the value a + 0 = a will represent the additive identity.
