Answer:
In the graph attached there is a sample generated with a correlation coefficient r=-0.5.
Step-by-step explanation:
A value of r that is -0.5 shows that there is a certain correlation and that this correlation is negative.
As there are no examples in this question, I searched for a generator of random samples with a user-input correlation coefficient between the two variables.
In the graph attached there is a sample generated with a correlation coefficient r=-0.5.
 
        
             
        
        
        
Answer:
2
Step-by-step explanation:
The slope is the rise over the run. 2 simple coordinates I can see is (6,2) and (7,4). I usually like to visualize it instead of actually solving it mathematically. So, we can start at (6,2). The point (6,2) goes up 2 and 1 to the right in order to get (7,4.) So since the slope is rise over run ( y/x) it would be 2/1 because we went 2 up the y axis and 1 to the right of the x axis. So 2/1 is 2. Therefore, 2 is the answer.  I'm sorry if my explaining isn't the best... I hope this helps though!!
 
        
             
        
        
        
Answer:
the volume of the box increases 48 times compared to the 1st one. 
Step-by-step explanation:
Volume of the box (1) = LWH 
- length of a box is increased 4 time = 4L 
 
- width is increased 4 times = 4W
 - the height is tripled = 3H 
 
=> The new volume of the box = 4L * 4W * 3H = 48LWH  
So the volume of the box increases 48 times compared to the 1st one. 
 
        
             
        
        
        
Simplify the expression shown below.(6+8i)(4-7i)
 
        
                    
             
        
        
        
Answer:
Roberta's boat started farther from the dock, but John's boat moves more quickly.
Step-by-step explanation: