Answer:
So just as a fraction of 3/30 can be simplified to 1/10, a ratio of 3:30 (or 4:40, 5:50, 6:60 and so on) can be simplified to 1:10.
Step-by-step explanation:
 
        
                    
             
        
        
        
5/13
The x value is negative (second quadrant). 13 is the hypotenuse. So the missing side is 13^2 = (-12)^2 + y^2.
Sin theta is the opposite (5) over hypotenuse (13).
        
             
        
        
        
Answer:
x=c+b/a
Step-by-step explanation:
ax-b=c
     +b +b
ax=c+b
__ ___
a=c+b/a
 
        
                    
             
        
        
        
A. 199
b. -71
c. -2.25
d. 30
e. -18
f. -4 
g. 4
h. 7
i. 0
        
             
        
        
        
(1/3)x =16 (x represents the total number of books he has)
x=48