Answer:
-14
Step-by-step explanation:
-17 + 16 = -1
-9 + 22 = 13
-1 - 13 = -14
 
        
             
        
        
        
Answer:
 ₱445
Step-by-step explanation:
₱18.50(x)
x = number of pineapples purchased
₱18.50(80) = ₱1480
80 - 3 = 77
₱25.00(z)
z = number of pineapples resold. 
25.00(77) = ₱1925
₱1925 = ₱1480 = ₱445
 
        
             
        
        
        
The correct answer is b Bc he sent 25$
        
                    
             
        
        
        
For a function to begin to qualify as differentiable, it would need to be continuous, and to that end you would require that  is such that
 is such that

Obviously, both limits are 0, so  is indeed continuous at
 is indeed continuous at  .
.
Now, for  to be differentiable everywhere, its derivative
 to be differentiable everywhere, its derivative  must be continuous over its domain. So take the derivative, noting that we can't really say anything about the endpoints of the given intervals:
 must be continuous over its domain. So take the derivative, noting that we can't really say anything about the endpoints of the given intervals:

and at this time, we don't know what's going on at  , so we omit that case. We want
, so we omit that case. We want  to be continuous, so we require that
 to be continuous, so we require that

from which it follows that  .
.
 
        
             
        
        
        
Answer:
22.84, 5.83
Step-by-step explanation:
Pythagoras theorem states that: a^2+b^2=c^2
So, for red triangle, it will be: 9^2+21^2=b^2
81+441=b^2
522=b^2
square root of 522=b
22.84=b
For purple one, 
3^2+5^2=a^2
9+25=a^2
34=a^2
square root of 34=a
5.83=a