Answer:
120+22+x=180
x=38
120+22+38=180
Step-by-step explanation:
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Suns rays go from one point and go outwards and mathematical rays also go from one point and outwards. Both go in one direction continuously
Answer: Option C
Step-by-step explanation:
The arc length is calculated as
Then
We know that
If BC is the diameter of the circumference then the radius R is:
Now we convert the anglo from degrees to radians
Finally
Answer:
The mean squares has d.f (n-1)
Step-by-step explanation:
The total number of degrees of freedom is n-1 as there is only one restriction of computing the grand mean. The d.f for k samples is k-1 beacuase the mean of the sample means must equal the grand mean. Similarly , the d.f for within SS is n-k , due to the k restrictions of computing the k sample means. Hence we find that
Total df= Within df + Between df
n-1= (n-k)+(k-1)
Between SS has (k-1) d.f
Within SS has (n-k) d.f
These two quantities are known as mean squares and has d.f (n-1)
