Answer:
B: Survey 3 randomly selected students from every homeroom.
Step-by-step explanation:
This would be the best way to survey, because all the others have some sort of variable. The principle doesn't know who buys lunch and who doesn't, so why would he just ask kids who ride in a car as there are kids who ride buses, or only 7th grade students, so the best answer would be something that everyone has, like homeroom.
For this case we have that by definition, the volume of a sphere is given by:
Where:
r: It is the radius of the sphere
According to the statement we have to:
So the volume is:
Rounding we have that the volume of the sphere is: 
Answer:
Option B
You multiply the binomial by the whole trinomial.
So 5x^2 (5x^3 - 6x^2 - 5) and then -2x (5x^3 - 6x^2 - 5)
then solve so it is:
25x^5 - 30x^4 - 25x^2 - 10x^4 + 12x^3 + 10x.
Then you simplify to:
25x^5 - 40x^4 + 12x^3 - 25x^2 + 10x
Your Welcome
There will be 121 handshakes because 11 times 11 is 121
Answer:
x = 3
Step-by-step explanation:
