It would be c=pied,where c equals cercumfrance
Answer:
Variance of difference between pre-exam and post-exam grades = 10.8
Step-by-step explanation:
Correlation (X,Y) = Covariance (X,Y) / √ { Variance (X) . Variance (Y) }
Given : Correlation (Pre & post exam grade) = 0.9 ; Variance (Pre exam grade) = 0.90 ; Variance (Post exam grade) = 16
So, 0.9 = Covariance (X,Y) / √ { 16 x 9 }
0.9 = Covariance (X,Y) / 12
Covariance (X,Y) = 12 x 0.9 = 10.8
Answer:
33 ⅓%
Step-by-step explanation:
Percent means out of 100, so write a proportion:
1 / 3 = x / 100
Solve for x by multiplying both sides by 100:
x = 100 / 3
Reduce:
x = 33 ⅓
The percent of questions he got right is 33 ⅓%.
118+22=average length
which it would give you 140 in length :)
Answer: y=x+2
Step-by-step explanation: