Sin(x) is a function bounded between -1 and 1. A value greater than 1 or smaller than -1 (-1.1, for instance) does not correspond to any real angle.
It then returns error
        
                    
             
        
        
        
Answer:
(7x+2)(3x-1); (5x+4)^2 or (5x+4)(5x+4); 
Step-by-step explanation:
formula to find area is L* W = A ; meaning length multiplied by width equals to the area.
21. 
using the formula to find area...
l*w=a
(7x+2)(3x-1) would be your answer 
btw, don't put the "=a" at the end, since it's an expression :))
22. 
since the problem states that it's a square, you can just say either...
(5x+4)^2 or (5x+4)(5x+4) not sure which one your teacher accepts
 
        
                    
             
        
        
        
It is easier to do if we get rid of the decimals, so lets multiply both numbers by 10:
5.8/1.2 = 58/12
and reduce the fraction:
= 29/6
then operate:
= 4.83
        
             
        
        
        
Answer:
A, B, and C are all true.
Step-by-step explanation:
A. 6 is neither a perfect square nor a perfect cube.   True
B. 16 is a perfect square.   True 
C. 27 is a perfect cube.   True 
OD. 1,331 is both a perfect square and a perfect cube.   False
E. 9 is a perfect cube.  False
 
        
             
        
        
        
Answer:
1199.3
Step-by-step explanation:
1199.28856995
round 2 up to 3, because the next number is greater than 5 (which is 8)