Answer:
Look below. 
Step-by-step explanation:

Use a calculator. 
 
        
             
        
        
        
Answer: 55%
1. 279 - 180 = 99
2. 99 divided by 180 = 0.55
3. 0.55 x 100 is 55.
55 is the percentage
 
        
                    
             
        
        
        
Answer:
0.5*13*15 = 97.5 square units
Step-by-step explanation:
If the diagonals of the rhombus are 13 and 15 then its area is 0.5*13*15 = 97.5 square units
 
        
             
        
        
        
Tip: Go to the internet and put the topic you are focused more on that you posted in Brainly
Step-by-step explanation:
Try it to give you some help
 
        
             
        
        
        
Indefinitely many solutions is the answer to this problem. All real numbers are solutions. The answer was 0=0.