No. This is not random sampling as the students chose are not chosen at random. Random sampling would be something done where each sample has equal probability of being chosen. Clearly this is not random sampling.
Answer:
21. 4
Step-by-step explanation:
2*3=6
4*6=24
24/6=4
what is a three band stretches
Answer: x=12
Step-by-step explanation:

The sum of the angles of the triangle is 180°:

Divide both parts of the equation by 4:

Answer:

Step-by-step explanation:
Let the third side of the triangle be
.
We can apply the cosine rule to find
.

We evaluate to obtain;



We take the positive square root of both sides to obtain;

The correct answer is B.