Answer:
The coefficient of  correlation=0.5
Step-by-step explanation:
We are given that 
Covariance between the variable  x and y=18
Variance of x=16
Variance of y=81
We have to find the coefficient of correlation
We know that 
Coefficient of correlation

Using the formula



Hence, the coefficient of  correlation=0.5
 
        
             
        
        
        
I think Its 66 cm. Hope This Helped! Good Luck...
        
             
        
        
        
Answer:
Step-by-step explanation:
x^2+120=0 can be rewritten as x^2 = - 120.  Taking the square root of both sides, we get x = plus or minus i*√120 = plus or minus i*√4√30, or
x = plus or minus i*2√30
So the correct answer choice here is "None of the above."
 
        
             
        
        
        
Answer:
$81.92
Step-by-step explanation:
Week 1:
250 * 20% = 50
250 - 50 = 200
Week 2:
200 * 20% = 40
200 - 40 = 160
Week 3:
160 * 20% = 32
160 - 32 = 128
Week 4:
128 * 20% = 25.6
128 - 25.6 = 102.4
Week 5:
102.4 * 20% = 20.48
102.4 - 20.48 = 81.92
 
        
             
        
        
        
Answer:
A fake email... sorry, I don't get it... However, my answer will update if you explain what do you mean by fake email
Step-by-step explanation:
New Update in answer at 6:39pm Central Chicago Time:
I can however give you some instructions how to create your own email :D
New Update in answer at 6:41pm Central Chicago Time:
First, click on your profile. Next, click on add account. Then, You click on use another account. Then, on the bottom of the sign in, you will see an option to create an account. :D