Answer:
the anser would be the second one i think hope it helps please mark brailiest
Step-by-step explanation:
 
        
             
        
        
        
Answer:
4 I guess 
Step-by-step explanation:
Because 
3-1=2
2^2=2*2=4
 
        
             
        
        
        
Answer: 1 Lap Per Every 4 Minutes Is Her Average Speed.
Step-by-step explanation: To find her average speed, simply divide 8 by 2 which is 4.
8/2 = 4 minutes per lap.
 
        
             
        
        
        
Answer:
x³ - (√2)x² + 49x - 49√2
Step-by-step explanation:
If one root is -7i, another root must be 7i.  You can't just have one root with i.  The other roos is √2, so there are 3 roots.  
x = -7i       is one root,
    (x + 7i) = 0    is the factor
x = 7i       is one root
   (x - 7i) = 0     is the factor
x = √2      is one root
     (x - √2) = 0   is the factor
So the factors are...
(x + 7i)(x - 7i)(x - √2) = 0
Multiply these out to find the polynomial...
(x + 7i)(x - 7i) =  x² + 7i - 7i - 49i²
Which simplifies to 
   x² - 49i²        since i² = -1 , we have
     x² - 49(-1)  
  
       x² + 49
Now we have...
(x² + 49)(x - √2) = 0
Now foil this out...
  x²(x) - x²(-√2) + 49(x) + 49(-√2) = 0
 
      x³ + (√2)x² + 49x - 49√2 
 
        
             
        
        
        
Answer:
13
Step-by-step explanation:
Since we want to find f(x) when x equals 10, we can substitute 10 in for x
f(x)=x/2 +8 
f(10)=10/2+8 
Divide 10 by 2 
f(10)=5+8 
Add 5 and 8 
f(10)=13
So, f(x) when x=10 is 13