Answer:
x=9
Reverse. 14-5=9, so x must be 9.
Answer:
Step-by-step explanation:
The absolute value is 62/3
Answer:
D, I don't know, and 1 + 3
Step-by-step explanation:
D I'm not 100% sure on, 2 I have no clue, and the third is just swapping the signs because you are flipping over the axis. I hope I could help you!
I believe it's the last one, but it's a matrix not a vector as the question asks
