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
We have to take out the greatest common factor from the given polynomial to factorize the expression. If you observe the terms of the polynomial, the greatest factor that is common to all the terms is
. So taking it out as common, the factorization of the polynomial will be:
So the option C gives the correct answer
45 people are present
Explanation: 60x1/4=15
60-15=45
Answer:
Step-by-step explanation:
Let the number be 'x'
Given:
Solving the quadratic equation:
The value of 'x' can be
Answer:
The length is 72
Step-by-step explanation:
length x width = area
9 x length = 648
length = 72