Answer:
One number is 561
The other number is 23.6854
Step-by-step explanation:
x = y^2                One number = the square of another
x + y^2 = 1122     The sum of the two numbers is 1122
Substitute y^2 in for x on the second equation.
y^2 + y^2 = 1122    Combine like terms on the left
2y^2 = 1122            Divide by 2
y^2 = 1122/2
y^2 = 561                Take the square root of both sides.
y = 23.6854             
x = y^2
x = 561
y^2 = 561
 
        
             
        
        
        
Answer:
 B. 21.64
Step-by-step explanation:         
We have been given a triangle and we are asked to find the length of AC (b).
We will use law of cosines to find the length of side AC.

Upon substituting our given values in the formula we will get,
 
  
 
      
 
       
 
    
 
 
Upon taking square root of both sides of our equation we will be get,
 
 
 
  
Therefore, the length of b is 21.64 and option B is the correct choice.
 
        
             
        
        
        
Answer:
The answer is D,  
Step-by-step explanation:
By graphing each one in a graphing tool like Desmos, you can determine which one it is. 
If your looking for an actual explanation on how it is found, I can't really help you on that one.
 
        
             
        
        
        
Answer:
1. 9/10
2. 15/16
4. 3/5
5. 3/5
Step-by-step explanation:
1. 7/10 + 2/10 = 9/10
2. 13/16 + 2/16 = 15/16
4. 7/15 + 2/15 = 9/15 = 3/5
5. 9/20 + 3/20 = 12/20 = 3/5
 
        
                    
             
        
        
        
Answer: A
Step-by-step explanation: If you subtract each price by the price lower then it. Ex: $19.95 - $15.96 = $3.99, $15.96 - $11.97 = $3.99 and so on. They all equal $3.99.