Step-by-step explanation:

 
        
                    
             
        
        
        
The experimental probability changes every time he rolls the die but if its just the next roll he has a 1/6 chance of getting a 3
        
             
        
        
        
Answer:
50
Step-by-step explanation:
3*50=150. 150/5=30 pounds
 
        
             
        
        
        
An expression is defined as a set of numbers, variables, and mathematical operations. The value of x for which the expression (x-1)(x-7)=0 is 1 and 7.
<h3>What is an Expression?</h3>
In mathematics, an expression is defined as a set of numbers, variables, and mathematical operations formed according to rules dependent on the context. 
For the given expression, (x-1)(x-7), the value of x for which the expression will be equal to 0 can be found by equation the factors of the expression to 0. Therefore,
x-1 = 0
x = 1
and 
x-7=0
x = 7
Hence, the value of x for which the expression (x-1)(x-7)=0 is 1 and 7.
Learn more about Expression:
brainly.com/question/13947055
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Answer:
kjjhgyufg
Step-by-step explanation: