Answer: 180 degrees
Step-by-step explanation:
A rotation of 180 degrees about the origin maps 
.
Answer:
B. temporary
Step-by-step explanation:
The last sentence says that the alignment of atoms does not last long.
Answer:
12/3 which is =4
Step-by-step explanation:
for adding fractions you keep the denominator the same and just add or subtract the numerators
2+11-1=12
Answer:
c?
Step-by-step explanation:
i think
Answer:
13 km
Step-by-step explanation:
The area formula for a triangle is ...
A = (1/2)bh
We are told that b=2h, so this becomes ...
A = (1/2)(2h)(h) = h²
Substituting the given area, we can find h:
169 km² = h²
(√169) km = h = 13 km
The height is 13 km.
