Answer:
62
Step-by-step explanation:
IM NOT SURE I THINK BUT hope this helps :)
 
        
             
        
        
        
This will be simple since They are both solved for Y. :) put them across from each other (in parenthesis if you want to show which one was substituted). So we have ( x + 4 )= -2x - 2. Next subtract the 4 from both sides and add 2x to each side. Now we have 3x = -6. Divide by 3 and get X=-2. Plug X into an original equation and solve for Y. y = (-2) + 4. Y=2                           (2, 2)
        
                    
             
        
        
        
Answer:
Around 31.42 in
Step-by-step explanation:
Assuming you mean circumference of the circle and the diameter is 10.....
If the diameter is 10, then the radius is 5 because the radius is always half the diameter.
The formula for finding circumference 2(pi)r
r = radius = 5 
So 2(pi)(5) = 10(pi) = ~31.42
Circumference is around 31.42 in
Hope this helps!