Answer:
a) x=93
Step-by-step explanation:
 
        
                    
             
        
        
        
64 is the answer and apparently it needs to be longer than 20 characters
        
                    
             
        
        
        
Answer:
11
Step-by-step explanation:
 
        
             
        
        
        
Answer:
1. Yes;   2. Yes ;     3. No;       4. Yes
Step-by-step explanation:
The proportion will have to be read the same way.  For example top Δ bottom  to the lower Δ bottom (locate in the same place)
14/21 = 6 /9     Yes  because the top Δ bottom to lower Δ bottom = top side to  
                          lower same side 
13.5/21 = 9/ 14   Yes    because the same two sides to the same two sides in 
                                      the lower Δ   
9/13.5 = 6 21      No   because top Δ side to lower Δ same location  but the
                                   second one top Δ side to the lower bottom
14 /6 =  21/6      Yes   because top Δ bottom to top side = lower Δ bottom to 
                          lower side (in the same place)
 
        
             
        
        
        
Answer:
The temperature in degrees after 9 hours is -1.25 degrees Fahrenheit 
Step-by-step explanation:
Here, we want to know the temperature after 9 hours 
Per hour rise each hour is 3/4 degree = 0.75 degree 
In 6 hours that will be 0.75 * 6 = 4.5 degrees 
Or hour drop is 1/4 = 0.25 degree
In 3 hours, that will be 0.25 * 3 = 0.75 degree 
Since it is a drop, we have -0.75 degree 
Temperature after 9 hours will be;
-5 + 4.5 -0.75
= -5.75 + 4.5 = -1.25 degrees fahrenheit