Answer:
i don't know how to work this
 
        
                    
             
        
        
        
Y = -3x - 1......so we sub in -3x - 1 in for y in the other equation
2x + 5y = 12
2x + 5(-3x - 1) = 12....now distribute the 5 through the parenthesis
2x - 15x - 5 = 12...add 5 to both sides
2x - 15x = 12 + 5..combine like terms
-13x = 17...divide both sides by -13
x = -17/13
now sub in -17/13 for x in the other equation
y = -3x - 1
y = -3(-17/13) - 1
y = 51/13 - 1
y = 51/13 - 13/13
y = 38/13
so the solution is (-17/13, 38/13)
        
             
        
        
        
Answer:
13
Step-by-step explanation:
convert percent to decimal: .20
.20 x 65
13
 
        
             
        
        
        
Answer:
47.3 m³
Step-by-step explanation:
The garden shed is made up of a rectangular prism and a pyramid.
<h3><u>Volume of a rectangular prism</u></h3>

<h3><u>Volume of a pyramid</u></h3>
<u />
From inspection of the given diagram, the slant height of the pyramid is 3.5 m.  
Calculate the perpendicular height of the pyramid using Pythagoras Theorem:

Therefore:

<h3><u>Volume of the garden shed</u></h3>

 
        
                    
             
        
        
        
A. Both triangles equal 50 and 10x5 is 50. Therefore, y=5.