ANSWER
Option D is correct
EXPLANATION
We resolve the forces into component forms.


Also the second is resolved to obtain,


To find the resultant vector, V, We add the corresponding components of the two forces to get:


The correct answer is D.
Answer:
x=14
Step-by-step explanation:
x+7=21
x=14
Answer:
B. Yuri divided by n instead of n-1
Step-by-step explanation:
It was stated in the question that the dataset was sample dataset. For a sample dataset, the standard deviation is given by the formula,
σ = √ Σ (Xi - mean)²/(n - 1) where i = 1,2,3.....n
Since this is just a sample dataset and not the whole population, Yuri should have divided by n-1 instead of n.
P equals 7 because 7 people to each table. 42/7=6