Answer:
its a 
Step-by-step explanation:
 
        
                    
             
        
        
        
The fraction that should be removed is 1/5.
<h3>How to calculate the fraction?</h3>
It should be noted that from the information, 40% of the coins are 20-cent coins and the rest are 50-cent coins. Those that are 50 cent will be:
= 100 - 40%
= 60%
The fraction that's should be removed will be:
= 2/5 - x = 1/5
x = 2/5 - 1/5
x = 1/5
The fraction that should be removed is 1/5.
Learn more about fractions on:
brainly.com/question/17220365
#SPJ1
 
        
             
        
        
        
Answer:
B
Step-by-step explanation:
7+r=15
-7    -7
r = 8
B.8
 
        
             
        
        
        
Answer:
210.53
Step-by-step explanation:
here 
hope it helps
 
        
             
        
        
        
Here, we are missing the slope and the y intercept. 
Lets look for the y intercept first. 
Where does it cross the y axis?  At 3!!
3 is the y intercept. 
Now, find the slope by using the slope formula. 

(0,3) and (2,1)
m = 1-3/2-0 = -2/2 = -2/2 = -1
m = -1
Okay, so we found our slope, now just write the equation. 
Answer: y = -1x + 3