Answer:
2.8
Step-by-step explanation:
I hope this helps!
 
        
             
        
        
        
We call the ratio between two directly proportional quantities the constant of proportionality. When two quantities are directly proportional, they increase and decrease at the same rate. While these two quantities may increase or decrease, the constant of proportionality always remains the same.
        
             
        
        
        
Answer:
2x+9y=18
Step-by-step explanation:
Distribute the denominator
y=-2/9x+2
9y=-2x+2
9y+2x=2
im sorry if this is wrong
 
        
             
        
        
        
1)inside the triangule is 180º .There are 3 angules, one with 120º, theta and 
angle ACB, lets call it x.
x + theta + 120 = 180
x + theta= 180-120
x + theta= 60
x= 60- theta 
angle ACB= 60- theta 
        
             
        
        
        
To find an inverse, switch the x and the y and solve for the new y.  Yours switched is x = 3y.  Now solving for y we divide both sides by 3 to get y = x/3