The arc’s length is: 
6.28 ft
If this helped, please mark brainliest.
        
                    
             
        
        
        
Y^2+4y=-8
add 8 both sides
y^2+4y+8=0 in the form of ax²+bx+c=0
Factor it
by formula
-b+-(√b²-4ac)/2a
-4+-(√16-32)/2*1
-4+-(√-16)/2
-4+-4i/2
-2+-2i where√-1=i
        
             
        
        
        
Answer:
Step-by-step explanation:
                  <u> 4km</u>
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4km ÷ 10.73 km/hr = .37 hr = 22.3 minutes
 
        
             
        
        
        
 is the size in wheels on the scale model .
 is the size in wheels on the scale model .
<u>Step-by-step explanation:</u>
Correct Question : Tom has a scale model of his car. The scale factor is 1 : 12. If the actual car has 16-inch wheels, what size are the wheels on the scale model?
We have , The scale factor is 1 : 12. We need to find If the actual car has 16-inch wheels, what size are the wheels on the scale model .Let's find out:
Ratio of size of wheels to actual size of wheels is 1:12 , but actual car has 16-inch wheels So ,
⇒  { x is size of wheel in scale model }
                 { x is size of wheel in scale model }
⇒ 
 ⇒ 
 ⇒ 
Therefore ,  is the size in wheels on the scale model .
 is the size in wheels on the scale model .