Answer:
x=4
y=3
Step-by-step explanation:
we have the following equations
3x+y=15  equation 1
5x-4y=8  equation 2
using equation 1 we have:
y=15-3x equation 3
using equation 3 in equation 2 we have:
5x-4(15-3x)=8
5x-4*15+4*3x =8
5x-60+12x = 8
17x=68
x=68/17
so we have x=4
finally in equation 3:
y = 15-3(4)
y = 15-12
y = 3
 
        
             
        
        
        
0.618 divided by 1.03 will equal to 0.6
 
        
                    
             
        
        
        
Y = 3x + 1 
Parallel lines have the same slope so the slope would be 3. Take the given equation and add the 3x to the other side. Using the given point. -2 (y point) = 3(-1(x point)) + b. Solve for b by adding the 3 over. b = 1 which is your y intercept. 
        
             
        
        
        
True is the correct answer.
 
        
                    
             
        
        
        
8:15 or 8 to 15 would be the ratio because you compare 8 quarters to 15 coins.