He should guess about 34 times. 
When you are rolling two dice there are 36 probabilities. In order to get an 8, there are 5 possibilities.
2 + 6, 3 + 5, 4 + 4, 5, + 3, 6 + 2
Therefore, the chances of an 8 are 5/36. Multiplying this by 250 gives us about 34.
The law of large numbers helps because it says the more rolls that take place, the more likely we are to get close to the expected value. With 250 rolls we should get pretty close.
        
                    
             
        
        
        
Yes that’s the answer he’s right
        
             
        
        
        
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Answer:
It helps you see the equation in "picture" form. 
Step-by-step explanation:
When you see the inequality in a graph form, most people can benefit from seeing a different version of the same problem. 
 
        
             
        
        
        
Answer:
it means that the roots of the quadratic equation is real and distinct and that means that 40 is a positive value