Answer:
385 miles 
Step-by-step explanation:
 
        
             
        
        
        
Answer:
13 x^2 -6x -9
Step-by-step explanation:
8x^2-4x-3+5x^2-2x-6
Combine like terms
8x^2+5x^2        -4x-2x       -6-3
13 x^2                 -6x             -9
 
        
             
        
        
        
Answer:
47
Step-by-step explanation:
Let a, b, and c be those three numbers.
When two of the three numbers are added at a time, the possible sums are 32, 39, 23. Let

Add these three equations:

Divide this equation by 2:

The sum of all three numbers is 47.
 
        
             
        
        
        
Answer:
-13.333
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
B
Step-by-step explanation:
Given
x² + 3x + 2 = 0 
To factor the quadratic
Consider the factors of the constant term (+ 2) which sum to give the coefficient of the x- term (+ 3)
The factors are 2 and 1, since
2 × 1 = 2 and 2 + 1 = 3, thus
(x + 2)(x + 1) = 0
Equate each factor to zero and solve for x
x + 2 = 0 ⇒ x = - 2
x + 1 = 0 ⇒ x = - 1