False
I think that’s right because three times 5 is 15 increased by four is 19 not -8 so...
        
                    
             
        
        
        
28/x = 40/100
Cross multiply 
40x = 28(100)
40x = 2800
Divide both sides by 40
x = 70 students
        
                    
             
        
        
        
Okay here: 
Let L be the length and W the width of the rectangle. 
1. w=2•L
2. 2L+2W=36
Substitute eq. 1 into eq. 2, 
2L+2•(2•L)=36
2L+4L=36
6L=36
L=9
Not done yet, then from eq. 1, 
 
W=2•L
W=2•9
W=18 <------- Your answer. :)
        
             
        
        
        
Answer:
you can plug it into a graphing calcuator right? or no
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
divide each side by -5
Step-by-step explanation:
-5m = -40
divide each side by -5
-5m/-5 = -40/-5
m = 5