Answer:
x = 20 and they are vertical angles
Step-by-step explanation:
2x = 40
x = 20
The space between the stars) is filled with extremely low-density
hydrogen gas. In the vicinity of a hot star, this gas can be heated to a
very high temperature. This hot, low-density gas will
Answer:

Step-by-step explanation:










Answer:
in order from left to right : NO, NO, YES, NO, YES, NO
Step-by-step explanation:
here's how you can tell! if any point on the line (or singular point) lines up VERTICALLY with a different point, it automatically is not a true function. thats why a vertical slope is "undefined" because its not a function.
i hope this made sense... have a good day !