Answer: 
Step-by-step explanation:

Since our ''y'' is already isolated, you can simply plug ''y'' information into the second equation.

Now we can use the first equation and replace ''x'' to find ''y''

To prove that your values are correct, take any of the equations and replace their values.

A composite number, is a number that can be divided evenly by others numbers other than 1 and itself, some examples include 4,6,8, and 9.
Answer:
400 pages in total
Step-by-step explanation:
60 = 15% (2)
120/3 = 30%/3
40= 10%(10)
400=100%
I'm bad at explaining
The discrete uniform distribution is on the interval 8 ≤ x ≤ 10.
Therefore the probability density function (shown in the figure) is
P(x) = 1/3 = 1/3 for x = 8, 9, 10
= 0 otherwse
The mean is μ = 1/3.
The variance is
σ² = Σp(x) (x- μ)²
Because x - μ = 0 for x = 8,9,10, therefore
σ² = 0
Answer:
μ = 1/3
σ² = 0