The answer is A,
![\frac{1}{81}](https://tex.z-dn.net/?f=%20%5Cfrac%7B1%7D%7B81%7D%20)
. This is because when plugging in -2 for x, the expression will look like this:
![9^{-2}](https://tex.z-dn.net/?f=%209%5E%7B-2%7D%20)
. To make the exponent positive, you have to flip it into a fraction. Then it will be
![\frac{1}{9^2}](https://tex.z-dn.net/?f=%20%5Cfrac%7B1%7D%7B9%5E2%7D%20)
. Lastly, you simplify the denominator into 81.
Answer:
See below
Step-by-step explanation:
In #4, the angles are vertical because the angles are congruent to each other. Therefore, you would set up the equation x+8=120 where x=112.
In #5, the angles are complementary because their sum is 90°. Therefore, you would set up the equation 43+x+3=90 where x=44.
In #6, the angles are supplementary because their sum is 180°. Therefore, you would set up the equation 76+2x+4=180 where x=50.
Answer:
I think the answer is a because it not getting any smaller