<span>x+y=30.....(1) and x-y=2......(2) so(1)+(2)......x+y+x-y=30+2 so 2x=32...x=16 now apply x=16 in (1) so we get......16+y=30 so .......y=14</span>
        
                    
             
        
        
        
6 2/5 is the answer, because 15 1/2 divided by 2 2/5 is 6 2/5
        
             
        
        
        
Answer:
2/5 or 0.4
Step-by-step explanation:
10 students like building snowmen but do not like skiing
so students who like both building snowman and skiing = 60 - 10 = 50
Total number of students who does not like building snowman and also does not like skiing = 80 - 60 = 20
Therefore, the probability that  a student who does not like building snowmen also does not like skiing = 20/50 = 0.4
 
        
             
        
        
        
Answer:
D
Step-by-step explanation:
The degree of a polynomial is determined by the largest exponent of a term within the polynomial.
Given
7x³ + 4x - 5 + 8
The term with the largest exponent is 8
 with exponent 5
Thus the polynomial is of degree 5 → D