Okay.. well did you try to do it on your own at least ? I help you, but what do you know already so we can go on from there. 
        
             
        
        
        
Answer:
18/28
Step-by-step explanation:
 
        
                    
             
        
        
        
51450 divided by 98
is 525 with remainder 0
 0	0	5	2	5
9	8| 5	1	4	5	0
 0 
 5	1 
 0 
 5	1	4 
 4	9	0 
 2	4	5 
 1	9	6 
 4	9	0
 4	9	0
 0
        
             
        
        
        
The answer is 5 7/8 
b/c 2 1/2 = 2 4/8
so then convert 8 3/8 as an improper fraction which is 67/8
and do the same w/ 2 4/8 which is 20/8
the do: 67/8 - 20/8 = 47/8
simplify 47/8 = 5 7/8.
Your answer is 5 7/8 inches of ribbon left.
        
             
        
        
        
Answer:
The system has infinitely solutions
Step-by-step explanation:
we have


Multiply by 3 both sides
 ----> equation A
 ----> equation A
The equation A is a circle centered at origin with radius 
and


Divide by 5 both sides
 ----> equation B
 ----> equation B
The equation B is a circle centered at origin with radius 
Equation A and Equation B are the same
Therefore
The system has infinitely solutions