Could u send me a bigger picture so I can help!
        
             
        
        
        
Answer:
The answer is 132
Step-by-step explanation:
First, find the area wholely, 20x8 = 160. Then find the triangle which is 7x 8 divided by 2 is 28 and you subtract the whole are by the triangle which is 160 - 28 is 132
 
        
             
        
        
        
Answer:
15.39% of the scores are less than 450
Step-by-step explanation:
Problems of normally distributed samples are solved using the z-score formula.
In a set with mean  and standard deviation
 and standard deviation  , the zscore of a measure X is given by:
, the zscore of a measure X is given by:

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.
In this problem, we have that:

What percentage of the scores are less than 450?
This is the pvalue of Z when X = 450. So



 has a pvalue of 0.1539
 has a pvalue of 0.1539
15.39% of the scores are less than 450
 
        
             
        
        
        
Answer:
<h2>x = 10</h2>
Step-by-step explanation:
<h3>Since BE is perpendicular bisector AE=ED</h3><h3>Substituting we have:</h3><h3>3x + 5 = x + 25 solving for x</h3><h3> x = 10</h3><h3 />
 
        
             
        
        
        
Start by using trig to find the length of the line LJ
The triangle KJL (big right angled triangle) has been given the following dimensions
Hypotenuse = 

The adjacent angle is 30 degrees
Since we have the hypotenuse and the  angle we must use the equation 
opposite = Sin(angle) x Hypotenuse
Opposite= sin30 x 

Opposite= 

Therefore line LJ is 

Now look at the smaller right angled triangle (LMJ) 
Hypotenuse is the line LJ which is 

The adjacent angle is 45
Since we have hypotenuse and angle we must use the equation opposite = sin(angle) * h
therefore 
x= 

 * sin45= 4