Answer:0.2588
Step-by-step explanation:
The one on the left is 6 (1/2x3x4) and the one on the right is 72 (6x12)
Answer:

Step-by-step explanation:
Given :

Now,

Therefore, expression is equivalent to 
B.
You know that the angle formed by 51 and y + 6 is equal to 106 because it needs to be supplementary with the 74. Thus, after subtracting you can get 49.