Answer:
One person is pushing the car in the net force of 200N
Step-by-step explanation:
600 divided by 3 (600 N in total, and 3 person pushing.)
 
        
             
        
        
        
-7x - 2y = 19
4x + y = -12
Set y equal to each other (opposite signs are fine and you could also set x equal instead of y)
-7x - 2y = 19
8x + 2y = -76
Add equations together
x = -52
Plug x value into an equation
4(-52) + y = -12
Solve for y
-208 + y = -12
y = 196
Hope this helps! ;)
 
        
             
        
        
        
Answer:
Using the inverse composition rule you know that if (fog)=x and (gof)=x then the functions are inverses.
(
g
o
f
)
=
(
7
x
+
1
)
−
1
7  this will result in (gof)=x
(
f
o
g)
=
7
x
−
1
7
+1
=
x
−
1
+
1
=x
graphically you can check this if it seems that the functions are reflected over the line x=y.
Step-by-step explanation:
 
        
             
        
        
        
Answer:
(x - 5)² + (y - 2)² = 9
Step-by-step explanation:
The equation of a circle in standard form is
(x - h)² + (y - k)² = r²
where (h, k) are the coordinates of the centre and r the radius
Here (h, k ) = (5, 2 ) and r = 3 , then
(x - 5)² + (y - 2)² = 3² , that is
(x - 5)² + (y - 2)² = 9