Answer:
8 cookies are made per cup of milk. 
Step-by-step explanation:
20 divided by 2 and 1/2 is 8. 
8 + 8 + 4 (or half of 8) = 20
hope this helps. . . 
have a good day. UwU
 
        
             
        
        
        
5.25 pounds of one alloy containing 45% copper and 36.75 pounds of 69% copper is used to make 42 pounds of 66% copper
<h3>What is an 
equation?</h3>
An equation is an expression that shows the relationship between two or more variables and numbers.
Let x represent the amount of 45% copper and y represent the amount of 66% copper needed to make 42 pounds of a third alloy containing 66% copper. Hence:
x + y = 42   (1)
Also:
0.45x + 0.69y = 42(0.66)   (2) 
This gives:
x = 5.25, y = 36.75
5.25 pounds of one alloy containing 45% copper and 36.75 pounds of 69% copper is used to make 42 pounds of 66% copper
Find out more on equation at: brainly.com/question/2972832
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Answer:
7/4, 
Step-by-step explanation:
it cant be simplified 
 
        
                    
             
        
        
        
You x all the sides together and add the 2 numbers you get 
        
             
        
        
        
The answer is 52+7x I hope this helps