Answer:
3
Step-by-step explanation:
An average railroad car has a weight of about 33 tons.
120 tons of freight is equivalent to 120/4 = 3.64 cars
that means that, for the operator to be able to haul 120 tons of freight, he has to haul at least 3 cars to break even.
Answer:
x+5y+5=0
Step-by-step explanation:
y=5x+6
Therefore the gradient of the line = 5
Now reciprocate the gradient and negate it
i.e -1/5
let (x,y) and (-15,2) be points on the line
y-2/x-(-15)=-⅕
5y-10=-x-15
5y-10+15+x=0
x+5y+5=0
Therefore the equation of the line =
x+5y+5=0
Answer:
81
Step-by-step explanation:
