Let's look at the picture, let's imagine that the gray line is the perimeter fence and that the red OR the blue is the one dividing it. We can see that the blue line is longer than the red one, so it will be advantageous, to have a bigger area, to have the dividing fence the smallest possible.
Let's say then that the width (W) is bigger (or equal) to the length (L), so we have:
The area is W*L, so we have
this function is a parabola facing down, its zeros are 0 and 80, therefore its maximum is when L=40
hence, L=40 and W=(240-120)/2=60
It will be a rectangle, measuring 60x40 and the divinding fence will be 40
because you have to flip the thing
The first step is to change the inequality symbol to that of equality. It becomes
y = - x + 6
We would substitute values for x into the equation and solve for the corresponding y values.
For x = - 1, y = - - 1 + 6 = 7
For x = 0, y = - 0 + 6 = 6
For x = 1, y = - 1 + 6 = 5
For x = 2, y = - 2 + 6 = 4
If we plot these values on the graph, a straight line would be formed. The line would be solid because the inequality symbol has an equal to symbol. The graph is shown below
The points above can be found within the unshaded region of the graph. The shaded region does not satisfy theinequality.
Answer:
43 knots
Step-by-step explanation: