It turns 4 times because 3 x 4 = 7
give thanx plz
        
                    
             
        
        
        
Answer:
x = 19.42
Step-by-step explanation:
8²+x²=21²
64+x²=441
-64      -64
x²=377
x=19.41648784
rounded is 19.42
 
        
             
        
        
        
It should be n+4=3n. Hope this helps
        
             
        
        
        
The s um is positive because 11/12 is greater than 7/8
        
                    
             
        
        
        
Solve the inequality for x:
5x - 3 ≤ 7x +7
Subtract 7x from each side:
-2x -3 ≤ 7
Add 3 to each side:
-2x ≤ 10
Divide both sides by -2, also when dividing  both sides of an inequality you flip the direction of the inequality sign:
x ≥ -5
The dot will be on -5, because the inequality includes equal to, the dot is solid and is greater than, the arrow will point to the right.
 The correct answer is D.