Answer:
Third
Step-by-step explanation:
Acceleration is the rate of change of the rate of change of position
In the third, the rate of change is negative, and the rate of change of that is decreasing as time passes.
 
        
                    
             
        
        
        
Answer:
a ) y = 1 and x = -1 
d) y = 5 and x = -1/2
Step-by-step explanation:
<h2><u>
Substitution method</u></h2><h2><u>Question a</u></h2>
y = x+ 2
y = 2x + 3
<em>we can make the first formula in terms of x , so we can place in into the second formula</em>
y = x + 2
x = y -  2 
now put y - 2 where x is in the second equation
y = 2x + 3
y = 2(y - 2) + 3 
y = 2y - 4 +3
now solve
4 - 3 = 2y -y
y = 1
since y = 1 we can find what x is by putting into the first formula 
y = x +2
x = y - 2
x = (1) -2
x = -1
<h3><u>hence y = 1 and x = -1 </u></h3><h3><u /></h3><h2><u>Question d</u></h2>
y = 2x + 6 
y = 4 - 2x
<em>we can make the first formula in terms of x , so we can place in into the second formula</em>
y = 2x + 6
y - 6 = 2x
x = (y-6)/ 2 
now place (y-6)/2 where x is in the second formula
y = 4 -2x
y = 4 - 2 ( )
)
now solve 
the multiplication by 2 and division by 2 are cancelled out
hence making the simplified equation as:
y = 4 - y + 6 
2y = 4 + 6
2y = 10
y = 5
now place this into the first equation 
y = 2x + 6
y - 6 = 2x
x = (y-6)/ 2 
x = (5-6)/2
x = -1/2
<h3><u>
hence y = 5 and x = -1/2</u></h3>
 
        
             
        
        
        
Answer:
8.356 rounded to the nearest hundredth=8.360
 
        
                    
             
        
        
        
It represent 13,9
Hope this helps
        
             
        
        
        
Answer:0.76
Step-by-step explanation: