Answer:
Choice B: Only (-1,-5)
Step-by-step explanation:
With this one, first the equation needs to be reduced into point-slope format.
y+5=2(x+1)
Distributive Prop.
y+5=2x+2
Carry over the 5 to the opposite side.
y=2x-3
Now, with the point slope form, it makes it easier to plug in the question choices to find which if any are correct.
Choice A: X is 5; Y is 10
y=2x-3
y=2(5)-3
y=10-3
y=7
This does not give a y value of 10, so it is false.
Choice B: X is -1; Y is -5
y=2(x)-3
y=2(-1)-3
y= -2-3
y= -5
This does give a y value of -5, so it is true. Choices C and D are therefore false as well, since only Choice B works.
 
        
             
        
        
        
Answer:
The mean = 17.54 
Step-by-step explanation:
Form a table as below;
<u>Interval         Frequency{f}      Midpoint of frequency{x}          fx    </u>
1-7                    19                         4                                            76
8-10                  14                         9                                            126
11-15                  15                         13                                           195
16-20                20                        18                                           360
21-35                 10                        28                                          280
36-50                13                         43                                          559
Sum                   91                                                                        1596
The mean  of grouped data = Sum of { Interval Midpoint * Frequency } /Sum of frequency 
The mean= 1596 / 91
The mean = 17.54 
 
        
             
        
        
        
8, the answer needs to be more than a certain amount of characters.
        
                    
             
        
        
        
Answer:
1580.0
Step-by-step explanation:
- Add all numbers and divide them by 10 (the amount of numbers).
- Mean is when you add all the numbers and divide them by how many their are.