C obtuse scalene
Source:
http://www.1728.org/triang.htm
        
                    
             
        
        
        
Answer:
43/18
Step-by-step explanation:
2/3(1/3+ 3 1/4)
2/3(1/3+ 3 1/4)
find the lowest common denominator (12) to add the two fractions. 
1/3= 4/12;  
3 1/4= 13/4 = 39/12
4/12+ 39/12= 43/12
2/3(43/12)
- Then multiply the fractions. 
2/3(43/12)
Numerator: 2*43= 86
Denominator: 3*12= 36
86/36
- Last simplify your fraction. 
43/18 or 2 7/18
 
        
             
        
        
        
Answer:
X+Y=26
X-Y=12
Step-by-step explanation:
fiction books= X
non fiction books= Y
then, 
fiction books= X 
non fiction books = X-12
but Y= X - 12 
from. the statement,
X+Y = 26
X-Y=12
 
        
             
        
        
        
Answer:
6in 5in
you have to do 5×2 and 6×2 and add those together