Answer:
The smallest integer is -4.
Step-by-step explanation:
Let the smallest integer be x.
Since the integers are all multiples of 4, they are
=> x, x+4, x+8, x+12 and x+16
=> x + x+4 + x+8 + x+12 + x+16 = 20
=> 5x + 40 = 20
Subtract 40 from both sides of the equation
5x +40 - 40 = 20 - 40
5x = -20
Divide both sides by the coefficient of x(which is 5)

x = -4
∴ the smallest integer is -4.
Hope this helps!!!
 
        
             
        
        
        
Answer:
3x
Step-by-step explanation:
50 mi/hr × (1 hr / 60 min) × (200 gal / 500 mi) = ⅓ gal/min
(⅓ gal/min) × (t min) = x gal
t = 3x
 
        
             
        
        
        
Answer:
2, 4 ,6 8
Step-by-step explanation:
Given condition y = 2x 
When x = 1 , y = 2 *1 = 2
When x = 2 , y = 2 * 2= 4
when x = 3 , y = 2* 3 = 6
When x = 4 , y = 2 * 4 = 8 
Hope it will help :)
 
        
             
        
        
        
Answer:
5
6
Step-by-step explanation:
To solve, collect like terms 
x ≥ 2 + 21/2 
x ≥ 4 1/2
the whole number that would be greater than 41/2 would be 5 
2.  2.7 + 3.3  > x 
6 > x