Answer is square root of 39
 
        
                    
             
        
        
        
First find the area of the parallelogram
Area of parallelogram = b x h 
= 12 x 7 
= 84 
Then find area of kite 
Area of kite = (xy)/2 
= (7 x 12)/2 
= 84/2 
= 42 
Now we are gonna subtract the area of the kite from the area of the parallelogram. 
84 - 42 = 42 
Therefore the area of the shaded region is 42.
        
             
        
        
        
Thats easy. figure it out
        
             
        
        
        
Answer:
The margin of error needed to create a 99% confidence interval estimate of the mean of the population is of 0.3547
Step-by-step explanation:
We have that to find our  level, that is the subtraction of 1 by the confidence interval divided by 2. So:
 level, that is the subtraction of 1 by the confidence interval divided by 2. So:

Now, we have to find z in the Ztable as such z has a pvalue of  .
.
So it is z with a pvalue of  , so
, so 
Now, find the margin of error M as such

In which  is the standard deviation of the population and n is the size of the sample.
 is the standard deviation of the population and n is the size of the sample.
In this question:

So



The margin of error needed to create a 99% confidence interval estimate of the mean of the population is of 0.3547