Answer:
He is been paid $7 per hour
Step-by-step explanation:
140dollars/ 20 hours 
 
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
y = -3x² + 24x - 50
factor out leading coefficient
y = -3(x² - 8x) - 50
complete the square
 coefficient of the x term: -8
 divide it in half: -4
 square it: (-4)² = 4²
 use 4² to complete the square and keep the equation balanced:
y = -3(x² - 8x + 4²) + 3(4²) - 50
y = -3(x-4)² - 2
 
        
             
        
        
        
Answer:  A
Step-by-step explanation:
The solution to the inequality is x <= -5 and x>=-3 so A is correct
 
        
             
        
        
        
Decimal to Fraction = 6 2/5
 6.4 as a fraction = 32 /5
Percentage = 640%
Description = 
The answer for this question will be 32 /5 because you asked that 6.4 as a fraction. If your asking to convert 6.4 to a fraction then the answer will be 6 2/5 in a mixed number.
Hope this helps.
 
        
             
        
        
        
Answer:
1/4
Step-by-step explanation:
Let the fraction be x/y
(x + 1)/y = 1/2
x/(y - 1) = 1/3          Cross multiply both equations.
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2*(x + 1) = y           Remove the brackets
2x + 2 = y
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3x = y - 1               Add 1 to both sides.
3x + 1=y - 1+ 1
3x + 1 = y
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Equate both ys
3x + 1 = 2x + 2        Subtract 1 from both sides.
3x + 1-1 = 2x + 2 -1
3x = 2x + 1              Subtract 2x from both sides.
3x-2x = 2x-2x +1    Simplify
x = 1
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y = 3x + 1
y = 3(1) + 1
y = 3 + 1
y = 4
The original fraction was 1/4