Answer:
I dont know the answer 
Step-by-step explanation:
But you can find the answer by figuring out what a domain and a range iss and chose which one is a domain and a range you can find what a domain and a range is on google
 
        
                    
             
        
        
        
Answer:
   18
Step-by-step explanation:
A two-digit number (xy) will have the value 10x+y. The sum of its digits is x+y.
You want ...
   10x +y = 2(x +y)
   1 ≤ x ≤ 9
   0 ≤ y ≤ 9
The equation can be simplified to ...
   8x = y
The only single-digit values for x and y that satisfy the requirements are ...
   x = 1, y = 8
The two-digit number of interest is 18.
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<em>Check</em>
Its sum of digits is 1+8 = 9. 2×9 = 18.
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<em>Comment on the relationship in the problem</em>
Many of us learned our multiplication tables for 9s by remembering that the sum of digits of 9n was 9, and that the leading digit of the product was n-1.
 
        
             
        
        
        
Answer:
<h2>
∠PZQ = 63°</h2>
Step-by-step explanation:
If point P is the interior of ∠OZQ , then the mathematical operation is true;
 ∠OZP +  ∠PZQ =  ∠OZQ
Given parameters
 ∠OZQ = 125°
 ∠OZP = 62°
Required
 ∠PZQ
TO get  ∠PZQ, we will substitute the given parameters into the expression above as shown
 ∠OZP +  ∠PZQ =  ∠OZQ
 62° +  ∠PZQ  = 125°
subtract 62° from both sides 
 62° +  ∠PZQ - 62° = 125° - 62°
∠PZQ = 125° - 62°
∠PZQ = 63°
<em>Hence the value of ∠PZQ  is 63°</em>