Answer:
12.1  
Step-by-step explanation:
The dashed line joining M₁ and M₂ is the hypotenuse of a right triangle as shown in red below.
The base of the triangle is
x₂ - x₁ = 2 - (-3) = 2+ 3 = 5
The height of the triangle is
y₂ - y₁ = 16 - 5 = 11
We can now use Pythagoras' theorem to calculate distance between the two midpoints.
x² = 5² + 11² = 25 + 121 = 146
x = √146 = 
12.1
The distance between M₁ and M₂ is 12.1.
 
        
             
        
        
        
It’s A because if you turn the shape they are the same
        
             
        
        
        
To get the Greates Common Factor (GCF) of 84 and 210 we need to factor each value first and then we choose all the copies of factors and multiply them: 
<span><span>84:   223 7</span><span>210:   2 357</span><span>GCF:   2 3 7</span></span>
<span>The Greates Common Factor (GCF) is:   2 x 3 x 7 = 42</span>
 
        
        
        
Just find the slope between the points
basically find (f(10)-f(7))/(10-7)
f(7)=7^2-3(7)-4=49-21-4=24
f(10)=10^2-3(10)-4=100-30-4=66
slope=(66-24)/(10-7)=42/3=14
average rate of change is 14
        
             
        
        
        
Answer:
8a+96
Step-by-step explanation:
8(12+a)
= 96+8a