Answer:
42
Step-by-step explanation:
83+q=125
q=125-83
q=42
 
        
             
        
        
        
Answers
1) 4
2) 0, 2, -10
3) 0, 5, -2
Step-by-step explanation:
1) x³ - 64 = 0
 x³ = 64
 x = 4
2) x³(x² + 8x - 20) = 0
 x³(x² + 10x - 2x - 20) = 0
 x³(x(x + 10) - 2(x + 10)) = 0
 x³(x + 10)(x - 2) = 0
 x = 0, 2, -10
3) x³ - 3x² - 10x = 0
 x(x² - 3x - 10) = 0
 x(x² - 5x + 2x - 10) = 0
 x(x(x - 5) + 2(x - 5)) = 0
 x(x - 5)(x + 2) = 0
 x = 0, 5, -2
 
        
             
        
        
        
Answer:
The smaller board would be 2.75 feet and the longer one would be 10.25 feet.
Step-by-step explanation:
In order to find this, assume the shorter board is equal to x. Next, we would know that the longer board would be equal to x + 7.5. Using these two assumptions, we can add the lengths together, set equal to 13 and then solve for x. 
x + (x + 7.5) = 13
2x + 7.5 = 13
2x = 5.5
x = 2.75
Now that we have the length of the shorter board, we can add 7.5 to it to get the larger one. 
2.75 + 7.5 = 10.25
 
        
             
        
        
        
Distance between points (3, -16) and (-10, -12) is 13.6015
        
                    
             
        
        
        
Answer:
The answer is D.
Step-by-step explanation: