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Roman55 [17]
3 years ago
15

a farmer wants to fence in three sides of a rectangular field shown below with 960 feet of fencing. The other side of the rectan

gle will be a river. If the enclosed area is to be a maximum, find the dimensions of the field. ​

Mathematics
1 answer:
Alika [10]3 years ago
3 0

9514 1404 393

Answer:

  240 ft by 480 ft

Step-by-step explanation:

Area is maximized when the long side is half the total length of the fence. That makes the short side (out from the river) be half the length of the long side.

The fenced field dimensions are 240 feet by 480 feet.

__

You can let x represent the length of the long side. Then the length of the short side is half the remaining fence: (960 -x)/2.

The total area is the product of these dimensions:

  A = x(960 -x)/2

We note that this is the equation of a parabola with zeros at x=0 and x=960. The maximum will be found on the line of symmetry, halfway between the zeros. That is at x = (0 +960)/2 = 480.

The area is maximized for a long-side dimension of 480 feet. The short sides are 240 feet.

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Sunny_sXe [5.5K]

Answer: -2

I'm not so sure what it means by slope, but because I saw a pattern between x and y (it decreases by 2 every x value and decreases by 4 every TWO x values) values so I would pick -2. BUT I don't know if the answer is -4.

Step-by-step explanation:

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3 years ago
What is tje equation for the linear function whose graph contains the points (2,5) and (3,0) ?
dolphi86 [110]
In order to find a slope, there is an equation:

Y2-Y1/X2-X1

X1=2
X2=3
Y1=5
Y2=0

0-5= -5
3-2=1

Since slope is written as Y/X, slope would be-5/1 or simply, -5.

Now, we need to find the y-intercept.

To do this, shift the original equation:

Original equation: y=-5x+b

Shifted equation: b=y+5x

Now, plug in one of the points.

Let's use (2,5)

b=5+5(2)

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So, the full equation of the line would be:

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4 0
3 years ago
Help me please. Been stuck on this. :/
alina1380 [7]

Answer:

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Step-by-step explanation:

6 0
3 years ago
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Round this number to the nearest thousand 7,433,654
Aliun [14]
The answer is going to be 7,434,000. hope that helped
5 0
3 years ago
Read 2 more answers
4. Solve the following inequality: 3y-1 less than 3
mylen [45]

3y - 1 < 3


Isolate the y. Treat the less than or equal like an equal sign.

Do the opposite of PEMDAS. First, add 1 to both sides

3y - 1 (+1) < 3 (+1)

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Next, divide 3 from both sides

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y < 4/3 is your answer

hope this helps

3 0
2 years ago
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