Answer:
-243
Step-by-step explanation:
(-3) (-3) (-3) (-3) (-3) = - 243

 
        
             
        
        
        
Rational number: Whole number isn't likely, negative integer isn't change, rational number is most likely, irrational number is not possible for cash change.
        
             
        
        
        
Answer:
Perimeter = 101.2 cm
Step-by-step explanation:
The given figure has a length of 18 cm and width of 24 cm.  A rectangle of length 8.6cm has been cut out, however, the question is asking to find the perimeter, or distance around the figure.  The overall rectangle still has a perimeter of 18 + 18 + 24 + 24 = 84. However, now it also has two additional sides of 8.6cm each, so 8.6 + 8.6 = 17.2.  
Add all the sides together for perimeter: 
84 + 17.2 = 101.2 cm 
 
        
             
        
        
        
Answer:
w = 
Step-by-step explanation:
Using Pythagoras' identity in the right triangle
w² + 7² = 14²
w² + 49 = 196 ( subtract 49 from both sides )
w² = 147 ( take the square root of both sides )
w = 
 
        
             
        
        
        
Answer:
Step-by-step explanation:
30