Slope = 3/4
y intercept = 2
equation : y= 3/4x+2
Tami thought that the perimiter is length plus width, which gave her 100. The actual width is 20
M=-1/3
that is the answer
Answer:
Option B.
Step-by-step explanation:
Given information:
Σ(x − M) = 44
where, M is mean.
Sample size = 12
The computational formula for sample variance is

where, M is sample mean and N is sample size.
Substitute Σ(x − M) = 44 and N=12 in the above formula.



The sample variance is 4.0.
Therefore, the correct option is B.