answer:
-4
Step-by-step explanation:
-3x+8= 20
 -8 -8
-3x = 12
÷-3. = ÷-3
 x = -4
 
        
             
        
        
        
15 is 30% of 
50 Change the percentage to a decimal by dividing it over 100:

Divide 15 over 0.3:
 
 
        
        
        
Ratio is a division in its simplest form. 
To get the ratio of length to width, divide the two then simplify.
In this case, convert the length and width into decimals.
length = 7 1/2 = 7.5
width 4 3/4 = 4.75
ratio of length to width is;
7.5/4.75 = 750/475
This can now be written as; 
750 : 475
Dividing both sides by 25;
= 750/25: 475/25
= 30 : 19
 
        
                    
             
        
        
        
The answer is D)You Can draw straws 12 times with 12 long straws an 4 short straws.
        
                    
             
        
        
        
Answer:
The price elasticity of demand is 0
Step-by-step explanation:
The demand function for monthly sales is given as:
q = 104e^-3p^2 + p
The price elasticity of demand E is obtained by differentiating q with respect to p
E = dq/dp = (-6p + 1) × 104e^-3p^2 +p = 
When p = ¥200
E = (-6×200 + 1) × 104e^-3(200)^2 + 200 = -1199 × 104(0) = -1199 × 0 = 0