That polynomial is made up of 2 terms, 

 and 7y, separated by a minus sign.  To find the degree of a polynomial you consider the term with the highest degree, no matter that the variables are different.  The degree on the first term is 5+2=7, whereas the degree on the second term is just 1.  Since the degree of a polynomial is equal to the degree of the term that is highest, our degree is 7.
 
        
        
        
Answer:
(21x^4y + 7x^3y^2 − 28x^2y^2) ÷ 7xy = 3x^3 + x^2y − 4xy
Step-by-step explanation: 
(9xy^2 + 12x^3y^4 − 6x) ÷ 3x = 4x^2y^4 + 3y^2 − 2 (False: 9xy^2:3x=3y^2)
25x^4y^2 + 10x^2y^4 − 15y) ÷ 5y = 5x^4y + 2x^3y^2 − 3 (False: 10x^2y^4:5y=2x^2y^3)
(16x^4y^2 + 24x^2y^2 − 8xy^2) ÷ 4xy = 4x^4y + 6xy− 2y(False: 16x^4y^2:4xy=4x^3y) 
(21x^4y + 7x^3y^2 − 28x^2y^2) ÷ 7xy = 3x^3 + x^2y − 4xy (True) 
 
        
             
        
        
        
Answer:
5 Kg of apples
Step-by-step explanation:
cost of apples per kg = 24000.00/3
=8000.00
amount of apples bought = 40000.00/8000.00
=5 Kg
He got 5kg of apples with Rp.40,000.00
 
        
             
        
        
        
Answer:
-4,-3,0,8,12 its backwards my bad
Step-by-step explanation:
because it is