Hi there! 
45 mi to 40 min = 1.125 mi per min
45 ÷ 40 = 1.124
Hope this helps!
        
             
        
        
        
Answer:
Area =  square units
 square units
Step-by-step explanation:
<u>Key skills needed: Area of a parallelogram</u>
1) This shape is a parallelogram, and the way to find the area of a parallelogram is: 
                                 
A = area
b = base (the side at the bottom
h = the height ( the length that runs from one side to another and makes a right angle)
2) The base (b) would be 3x. The height (h) would also be 3x
3) This means A =  
 
3 times 3 is 9 --> and x times x is 
Therefore the area is --> 
<em>Hope you understood and have a nice day!! :D</em>
 
        
             
        
        
        
Answer:
f(x) = 4x^2 + 2x - 4.
Step-by-step explanation:
Let the quadratic function be y = f(x) = ax^2 + bx + c.
For the point (-2, 8)  ( x = -2 when y = 8) we have:
a(-2)^2 + (-2)b + c = 8
4a - 2b + c = 8       For (0, -4) we have:
0 + 0 + c = -4   so c = -4.    For (4, 68) we have:
16a + 4b + c = 68  
So we have 2 systems of equations in a and b ( plugging in c = -4):
4a - 2b - 4 = 8
16a + 4b - 4 = 68
4a - 2b = 12
16a + 4b = 72    Multiplying 4a - 2b = 12 by 2 we get:
8a - 4b = 24  
Adding the last 2 equations:
24a = 96
a = 4
Now plugging a = 4 and c = -4 in the first equation:
4(4) - 2b - 4 = 8
-2b = 8 - 16 + 4 = -4
b = 2.
 
        
             
        
        
        
The answer is that his average is 75.5 for the second nine weeks
        
             
        
        
        
30.78cm 32.36cm 73.14cm the process is shown in the following picture