If those are the possible answers i'm pretty sure you need to have a group of numbers you extract the mean from for example form the numbers 56, 77, 65, 87, and 99 the mean of the numbers would be 77 so once i have those we can figure it out
Answer: 
Step-by-step explanation:

Answer:
i hope u have a good day
Step-by-step explanation:
Associate of multiplication I think
Answer:
x = 19/2 or 9.5
Step-by-step explanation:
Hello!
We can distribute the parenthesis and solve.
<h3>Solve</h3>
- 2(4x - 3) = 5(2x - 5)
- 2(4x) - 2(3) = 5(2x) - 5(5)
- 8x - 6 = 10x - 25
Move all x terms to one side and integer terms to the other
- 8x - 6 = 10x - 25
- -6 + 25 = 10x - 8x
- 19 = 2x
- x = 19/2
- x = 9.5