Answer:
The slope of the line shown is -1/4.
Step-by-step explanation:
Change in y/Change in x = - 1/4
 
        
             
        
        
        
They are all correct except in 5), 4+8 is 12, not 13.
        
                    
             
        
        
        
Answer:
Hamish and Harry work as plumbers. Harry earns a dollar an hour more than 5/4 the amount hamish earns per hour. harry earns per hour is 2$ less than 7/5 the amount hamish earns per hour. how much do each of them make an hour
Step-by-step explanation:
Let
x is the  amount Harry earns 
y is the amount Hamish earns 
x=(5/4)y+1 ⇒ (x-1)*4/5 = y-------- equation 1
x=(7/5)y-2⇒ (x+2)*5/7 = y-------- equation 2
equals 1 and 2
(x-1)*4/5 = (x+2)*5/7
 (4x-4)/5 = (5x+10)/7
 (4x-4)*7 = (5x+10)*5
28x-28 = 25x+50
 28x-25x = 50+28
 3x = 78
 x = 26
substitute x = 26 for y=(x-1)*4/5
y = (x-1)*4/5
y =  (26-1)*4/5
 y = 20
the answer is
<h3>Harry earns $26 an hour</h3><h3>Hamish earns  $20 an hour</h3>
 
        
                    
             
        
        
        
Answer:
The radius of hole is 5 feet
Step-by-step explanation:
Depth of conical hole = 9 feet 
Let the radius of hole be r 
Volume of conical hole =
So, Volume of conical hole =
We are given that volume of a CONE-shaped hole is 75pi ft cubed. 
So,



r=5 
Hence The radius of hole is 5 feet