Answer:
4c - 12
Step-by-step explanation:
The brackets mean you multiply.
4 x c = 4c
4 x 3 = 12
This is parallelogram so
8=2x
X=4
Or
3x=12
So again we will find x=4
Answer:

Step-by-step explanation:


Answer:
C. 
Step-by-step explanation:
When two polygons are considered similar, the ratio of their corresponding sides would also be equal.
Since ∆ABC and ∆ADE are similar, 

Cross multiply


Divide both sides by 7 to find AB


