Answer: 5w^2 (15w ^3 -7)
Good luck !
Answer:
2.0
Step-by-step explanation:
Couldn't really understnd what you wrote but I'll assume it's the standard deviation of a fair, 7-sided die
The standard deviation is just the square root of the variance (which is just the second moment minus the first moment squared)
The first moment (AKA the average is..)

The second moment is..


Answer:
(8w+8x)(8w+8x)+(3w+10y)(3w+10y)+(4y+8x)(4y+8x)
Step-by-step explanation:
B=-5 and c=-2. b is the first term in the sequence and-2 Is the common ratio of the sequence.