Answer:
10/4
Step-by-step explanation:
Randomthing2143 is right 
 
        
                    
             
        
        
        
Answer:
20
Step-by-step explanation:
→ First find the value of x and y 
x + y = 5
x - y = 4
→ Add the equations to cancel out the y's
2x = 9
→ Divide both sides by 2 to find the value of x
x = 4.5
→ Substitute x = 4.5 back into x - y = 4 to find the value of y
4.5 - y = 4
→ Minus 4.5 from both sides to isolate -y
-y = -0.5
→ Multiply everything by -1
y = 0.5
→ Substitute x = 4.5 and y = 0.5 into x² - y²
4.5² - 0.5² = 20.25 - 0.25 = 20
 
        
             
        
        
        
Answer:
a = -15, b = -.5, c = -1
Step-by-step explanation:
1/3a = -5 --> multiply each side with 3 --> a = -15
12 - b = 12.5 --> subtract 12 from both sides --> -b = .5 --> multiply each side with -1 to get b positive --> b = -.5
.1 = -10c --> multiply each side with -10 --> c = -1
 
        
             
        
        
        
Answer: slope is 1 
equation: 1x-2 or x-2
I hope this is good enough:
 
        
                    
             
        
        
        
we are ratio as

It will be equivalent to only those terms which would be multiple of this term
so, we will multiply top and bottom term by 5
and we get 



so, it is very similar to 12/35
so, it will be equivalent to 12/35
so, option-C.......Answer