Answer:
1       a
2      b
3      c
4      d
Step-by-step explanation:
1b
2d
3c
4a
 
        
             
        
        
        
Hi!
Let's put the values in the equation.
10 · 5 + 16 ÷ 4 = ?
Using PEMDAS...
Multiplication
50 + 16 ÷ 4 = ?
Division
50 + 4 = ?
Addition
54
The answer is 54
Hope this helps! :)
        
                    
             
        
        
        
Answer:
Hope this helps!
Step-by-step explanation:
2L + 3S = 83
  
4L + 8S = 197
  
Multiplies the top equation by -2.
-4L + -6S = -166
  
4l  + 8S = 197
  
  
Adding them together...
  
2S = 31
  
S = 31/2 = 15.5
  
Plugging into the first equation:
  
  2L + 3S = 83
  
  2L + 3(15.5) = 83
  
 2L + 46.5 = 83
  
2L = 83 - 46.5
  
2L = 36.5
  
L = 36.5/2 = 18.25
  
check:
  
 2L + 3S = 2(18.25) + 3(15.5) = 36.5 + 46.5 = 83
  
 4L + 8S = 4(18.25) + 8(15.5) = 73 + 124 = 197
  
The Large box weighs 18.25
The small box weighs 15.5
 
        
             
        
        
        
{-2x-5y=13
<u>{2x-5y=17    </u>(+)
<em />  -2x+2x-5y-5y=13+17
-10y=30     /:(-10)
y=-3
2x-5y=17
2x-5*(-3)=17
2x+15=17
2x=2
x=1
<em>Solution: (1; -3)</em>        
 
        
             
        
        
        
Answer:
they both charge the same cost per linear feet
Step-by-step explanation:
It appears that each company has a base charge for installation, which is the dollar value where each line begins at the y-axis. Both lines have the same slope and if you count, the cost is $75 per 5 linear feet.