Answer:
We have a strong negative relationship between the variables.
Step-by-step explanation:
Given two random variables X and Y, it is possible to calculate the covariance as Cov(X, Y) = E(XY)-E(X)E(Y). We have E(X)=5, E(Y)=6 and E(XY)=21. Therefore Cov(X,Y)=21-(5)(6)=21-30=-9. On the other hand, we know that the correlation of X and Y is the number defined by 
and because in this particular case we have V(X)=9 and V(Y)=10, we have 
= -0.9487. Therefore, we have a strong negative relationship between the variables.
Total = 65
65-23=42
42/3=14
Each necklace = $14
Area= Length x width
So....
Length= Area divided by width.
Plug in equation
20 divided by 5= L
L= 4
Answer is 4 cm
48 “divided by” (-8) = (-6)
(-40) “divided by” 8 = (-5)
12 “minus” (-2) = 14
18 “plus” (-12) = 6
18 “plus” (-20) = -2
22 “times” (-0.5) = -11
Step-by-step explanation:
Area of trapezium=(b1+b2)*h/2 ( as given in figure)
b1=30in.
b2=36in.
h=20in.
Area=(30+36)*20/2
=660inches²
