Answer:
-9 may be the right answer
 
        
                    
             
        
        
        
Answer:
8.49
Step-by-step explanation:
there is a little formula related to the famous formula of Pythagoras. 
it says that the height of a triangle is the square root of the product of both segments of the baseline (the segments the height splits the baseline into).
so, x is actuality the height of the triangle. 
x = sqrt(3×24) = sqrt(72) = 8.49
 
        
             
        
        
        
Answer: -3060
68
-45
--------
340
272x <-- the x is in place of a zero
--------
3060
times the negative: -3060
        
             
        
        
        
Answer:
The null hypothesis is: 
The alternative hypothesis is: 
Step-by-step explanation:
At the null hypothesis, we test if the mean is equal to a certain value.
At the alternate hypothesis, we test if the mean is less than, more than, or different from the value tested at the null hypothesis.
The tuft bind strength of a synthetic material used to make carpets is known to have a mean of 100 lb and standard deviation of 20 lb.
This means that the null hypothesis is: 
Could it be that the average tuft strength is above 100 lb?
The world above means that the appropriate alternative hypothesis is: 
 
        
             
        
        
        
Step-by-step explanation:
(2+3)(2-3)
=5×(-1)
= -5
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