By solving given equations, the value of c is 30.
Given two equations
 x + 2y = 10 and
3x + 6y = c
These lines represents the same line for some constant c.
Value of c:
x + 2y = 10-------------(1)
3x + 6y = c-------------(2)
Dividing equation (2) by 3

After solving the above equation, we get
x + 2y = c/3-----------(3)
Remember that a line is written as ax + by = c, in our case, both lines have a =1 and b = 2. Therefore, in orther that the two lines are equal, we need that, 10 = c/3
c = 10 × 3 = 30
c = 30
Therefore,
The value of c is 30.
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Answer: yes
Step-by-step explanation: Joshua 
 
        
             
        
        
        
7. the last one 
I = P R T 
I = 15.75 P = 500 R = unknown T = 6
15.75 = 500 (r) (6) 
divide the T and I
15.75 ÷ 6 = 500 (r) (6) ÷6
2.62 = 500 (r) *get rid of the six*
divide the P with new answer 
2.62 ÷ 500 = 500 ÷ 500 *get rid of 500*
0.00524 = r
move decimal to make it in to a percentage 
5.24% = R 
        
             
        
        
        
Made the treaty of versai witch put restrictions on Germany and made the pay for the destruction they caused during the war putting them in a spot were they had no money 
        
             
        
        
        
Answer:
Quadrant III ( C )
Quadrant IV ( D )
Step-by-step explanation:
Ordered pair ( a, b ) 
gives a point P on the coordinate plane
( a, b ) = ( x, y ) 
given : b = negative ( y-axis )
            a ≠ 0 ( i.e. a = negative or positive ) ( x -axis ) 
Therefore point P is located in the : Third and fourth quadrants