The mean of a sequence of numbers is the average.
The true statement is: 
The given parameters are:


The mean of a dataset is calculated as:

So, we have:

Multiply both sides by m

When the sequence is split into two, we have:


Where:

So, we have:

Hence, the true statement is: 
Read more about mean and averages at:
brainly.com/question/16217700
The answer to your problem is 0
Answer:
6x^3-5x^2-8x+3
Step-by-step explanation:
(2x-3)(3x^2+2x-1)
6x^3+4x^2-2x-9x^2-6x+3
6x^3+4x^2-9x^2-2x-6x+3
6x^3-5x^2-8x+3
Answer:
15) choice 1
16) choice 4, 72 degrees
17) choice 3) translation
18) choice 3, never
19) choice 3) 2
20) choice 3
21) acute triangle, at least one angle less than 90 degrees
Step-by-step explanation: