Answer:
C. 
A. First Picture
Step-by-step explanation:
We are given the inequality,
.
On simplifying the inequality, we get,

i.e. 
i.e. 
i.e. 
So, we get the correct representations of the inequality are,
C. 
A. the First Picture
Answer:

Step-by-step explanation:
Here is one example:




Answer:
504
Step-by-step explanation:
The greatest common factor of 27, 45, and 63 is 9
Answer:
Take an example in a triangle:
The orthocenter is the intersection point of 3 altitudes.
The centroid is the intersection point of 3 medians.
The circumcenter is the intersection point of 3 bisectors.
Centroid, orthocenter, and circumcenter are collinear.
Hope this helps!
:)