Answer:
here are a few that are equivalent
8:6
28:21
48:36
68:51
 
        
                    
             
        
        
        
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)
 
        
             
        
        
        
x = 180° - 67° - 52°
x = 61°
So, the value of x is 61°
 
        
             
        
        
        
2 1/4 = 9/4 so the reciprocal is 4/9 (I believe)
        
                    
             
        
        
        
Answer:
1. Gained 9 kilos = 
2. 32 steps backward = 
3. Decreased by P5 = 
Step-by-step explanation:
Natural numbers refer to numbers that are used for counting.
Whole numbers include 0 and natural numbers.
An integer is a collection of whole numbers and their negatives.
1. Gained 9 kilos = 
(Gained is denoted by + )
2. 32 steps backward = 
(backward is denoted by - )
3. Decreased by P5 = 
(decrease is denoted by - )