a farmer wishes to enclose two identical adjoining rectangular pens against the side of a large barn. she wants each pen to have an area of 750 square feet and will use the barn as one side of the enclosure. what is the least amount of fencing needed (in feet) to create the two pens?

Answers

Answer 1

Using basic geometry and area formula for calculation of length, Apply fencing on only 3 side , The answer is 109.54 feet.

What do you mean by geometry?

A subfield of mathematics called geometry examines the dimensions, placements, angles, and sizes of objects.

What is a rectangle and it's formula for area?

A plane shape, as opposed to a square, with four straight sides and four right angles, particularly one with uneven neighboring sides.

Area of rectangle is:

A= l x b

area=750 square feet.

for attaining minimum area , these area must be fitted in square,

so, [tex]l = \sqrt {750}[/tex]

=27.38 feet

since, one side is taken by barn, l should be extended 4 times, 2 on 1 side and 2 on sides each.

Total length of fence = 4 * 27.38

= 109.54 feet

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Related Questions

Braden salazar was deployed in a combat zone for all of 2021. He is married and has two children. Braden's nontaxable combat pay in 2021 is $14,000. His wife worked part-time while braden was deployed and earned $7,000. What is the maximum amount of earned income the salazars can report for eitc purposes in 2021?.

Answers

The amount of earned income the Salazars can report for EITC purposes in 2021 is $21,000.

The maximum amount of earned income the Salazars can report for EITC purposes in 2021 is $21,000. This is calculated by adding Braden's nontaxable combat pay ($14,000) and his wife's earned income ($7,000).

Formula:

Maximum Earned Income for EITC = Braden's Nontaxable Combat Pay + Wife's Earned Income

Maximum Earned Income for EITC = $14,000 + $7,000

Maximum Earned Income for EITC = $21,000

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What is the inverse of a quadratic called?

Answers

Answer: Square Root Function

The inverse of a quadratic function is a square root function because

Which series of transformation would create a congruent shape?

Answers

A series of transformations that would create a congruent shape would include any combination of rotations, reflections, and translations that preserve the size and shape of the original figure.

For example, rotating a square by 90 degrees and then reflecting it across a line of symmetry would create a congruent square. Similarly, translating a triangle to a new location on the plane while preserving its orientation would also create a congruent triangle.

What is transformation, why is it important, etc.?

The structures, cultures, and business models of an institution must be realigned in order to create a learning environment that produces substantial and equitable increases in outcomes and educational value. Transformation describes this procedure.

What is the transformational process?

Any activity or collection of activities that takes one or more inputs, changes and adds value to them, and produces outputs for consumers or clients is referred to as a transformation process.

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Answer number 3 please thank you

Answers

Answer:

3. D

Step-by-step explanation:

1/10+1/8+1/15=1/x

24/240+30/240+16/240=1/x

70/240=1/x

7/24=1/x

1/3.4=1/x

x=3.4

How do you find the vertical asymptotes of the following function?

Answers

The vertical asymptotes of a function can be found by setting the denominator equal to zero and solving for x. This will give the x-values that the function cannot approach as it approaches infinity.

The vertical asymptotes of a function can be found by setting the denominator equal to zero and solving for x. This will give the x-values that the function cannot approach as it approaches infinity.In other words, a vertical asymptote is a line that the graph of a function approaches but never touches. This line is the result of the denominator of a rational function becoming equal to zero. When this happens, the function is undefined at that value of x. To find the vertical asymptotes of a function, one must first factor the denominator and set each factor equal to zero. Then, solve each factor for x to get the x-values of the vertical asymptotes. It is important to note that a vertical asymptote can also appear if the numerator of a rational function is equal to zero. In this case, the vertical asymptote is the x-value at which the numerator is equal to zero. The vertical asymptotes of a function can help us to understand the behavior of the function and its graph.

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You are refilling your inventory of welcome packet for new cutomer. For each packet, it take 5 minute to print, 2 minute to organize, and 5 minute to proofread. The ink in the printer will need to be changed every 5 packet, which take 3 minute. You have 3 hour to dedicate to thi tak. Aume thathe ink in the printer wa already changed before beginning and that you have to complete each packet before completing any tep for the next one. How many welcome packet will you be able to fully complete in the time allotted?

Answers

Answer:

To complete each welcome packet, it will take a total of 5 minutes to print + 2 minutes to organize + 5 minutes to proofread = 12 minutes.

If it takes 3 minutes to change the ink in the printer every 5 packets, you will need to change the ink in the printer every 5 packets * 12 minutes per packet = 60 minutes.

In total, it will take you 60 minutes to change the ink in the printer + 12 minutes per packet to complete each packet, for a total of 60 minutes + (12 minutes/packet * number of packets) = 72 minutes per packet.

In the time allotted, you have 3 hours * 60 minutes/hour = 180 minutes.

Therefore, you will be able to fully complete 180 minutes / 72 minutes per packet = 2.5 packets.

Rounded down to the nearest whole number, you will be able to fully complete 2 welcome packets in the time allotted.

Step-by-step explanation:

If a and b are real numbers then a+b is a real number.This law is called ?

Answers

Step-by-step explanation:

This law is called the closure property of real numbers. It states that if a and b are real numbers, then their sum, a + b, is also a real number. This is because the set of real numbers is closed under addition, which means that any operation performed on real numbers will result in another real number.

For example, if a = 3 and b = 4, then a + b = 7, which is a real number. Similarly, if a = -2 and b = 3, then a + b = 1, which is also a real number.

The closure property of real numbers holds for many other mathematical operations as well. For example, the product of two real numbers is also a real number, as is the quotient of two real numbers (assuming that the divisor is not zero). The set of real numbers is also closed under subtraction and negation.

Which is a list of all the roots of
x3 −x2 =4−4x?
F {−1,2,−2} H {−1,2i,−2i}
G {1,2,−2} J {1,2i,−2i}

Answers

Answer:

J

Step-by-step explanation:

[tex]x^3-x^2+4x-4=0 \\ \\ x^2(x-1)+4(x-1)=0 \\ \\ (x^2+4)(x-1)=0 \\ \\ (x-2i)(x+2i)(x-1)=0 \\ \\ x=1, 2i, -2i[/tex]

Work out (13.8 × 107) × (5.4 × 10-12)
Give your answer as an ordinary number.

Answers

62017.2 is the answer

A construction worker is pouring concrete stairs. The first step requires 1. 8 cubic feet of concrete, and the first 5 steps require a total of 27 cubic feet. If the steps follow an arithmetic series, how much concrete is required for the first 12 steps? 259. 2 cubic feet 43. 2 cubic feet 156 cubic feet 140. 4 cubic feet.

Answers

We can follow Arithmetic series, then the number of cubic feet concrete is required for the first 12 steps = 140.4 cubic feet.

Given that,

The first step requires 1. 8 cubic feet of concrete,

The first 5 steps require a total of 27 cubic feet.

An arithmetic series is the sum of the terms in an arithmetic sequence with a definite number of terms. Following is a simple formula for finding the sum: Formula 1: If [tex]S_{n}[/tex] represents the sum of an arithmetic sequence with terms , then. This formula requires the values of the first and last terms and the number of terms.

For an arithmetic series

[tex]a , a+d , a+2d , a+3d , .......[/tex]  

where a is the first term and d is the common difference, the sum of n terms equals,

[tex]S_{n}[/tex] = [tex]a_{n} +(\frac{n(n-1)}{2} ) d[/tex]         (Equation-1)

Since the first step requires 1.8 cubic feet of concrete, a = 1.8.

Now, the first 5 steps require 27 cubic feet of concrete, that is,

[tex]S_{5}[/tex] = 27

a = 1.8

n = 5

We can substitute values in equation-1,

[tex]S_{n}[/tex] = [tex]a_{n} +(\frac{n(n-1)}{2} ) d[/tex]  

[tex]S_{5}[/tex] = (5) (1.8) + [tex](\frac{5(5-1)}{2} )d[/tex]

[tex]S_{5}[/tex] = (5) (1.8) + [tex](\frac{5*4}{2} )d[/tex]

[tex]S_{5}[/tex] = (5) (1.8) + [tex]\frac{20}{2} d[/tex]

[tex]S_{5}[/tex] = (5) (1.8) + 10 d

[tex]S_{5}[/tex] = 9 + 10 d

Then, [tex]S_{5}[/tex] = 27

27 = 9 + 10d

27 - 9 = 10d

18 = 10d

d = [tex]\frac{18}{10}[/tex]

d = 1.8

Find the concrete required for 12 steps.

Then, we can substitute n = 12

So,

We can write,

[tex]S_{n}[/tex] = [tex]a_{n} +(\frac{n(n-1)}{2} ) d[/tex]  

[tex]S_{12}[/tex] = (12) (1.8) + [tex](\frac{12(12-1)}{2} )d[/tex]

[tex]S_{12}[/tex] = (12) (1.8) + [tex]\frac{12*11}{2} d[/tex]

[tex]S_{12}[/tex] = (12) (1.8) + [tex]\frac{132}{2} d[/tex]

[tex]S_{12}[/tex] = (12) (1.8) + 66 d

[tex]S_{12}[/tex] = 21.6 + 66 d

We can substitute d = 1.8

[tex]S_{12}[/tex] = 21.6 + 66 (1.8)

[tex]S_{12}[/tex] = 21.6 + 118.8

[tex]S_{12}[/tex] = 140.4

Therefore,

We can follow Arithmetic series, then the number of cubic feet concrete is required for the first 12 steps = 140.4 cubic feet.

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Willow homework sheet is 3×19 how can you use base 10 blocks to show 3×19

Answers

Answer: 27

Step-by-step explanation:

two base ten blocks then 7

Is the system of linear equations 2x 3y 9 0 and 4x 6y 18 consistent justify your answer?

Answers

Consistency exists inside the linear equation system.

To determine whether a system of linear equations is consistent, you can try to solve the system to find the values of the variables that satisfy all of the equations. The system is consistent if it has at least one solution. If the system has no solutions, then it is inconsistent.

In this case, the system of linear equations is 2x + 3y - 9 = 0 and 4x + 6y - 18 = 0.

To solve this system, you can use algebraic methods such as substitution or elimination. Using substitution, you can solve one of the equations for one of the variables in terms of the other, and then substitute this expression into the other equation to solve for the other variable. For example, you could solve the first equation for y:

2x + 3y - 9 = 0

3y = 9 - 2x

y = (9 - 2x)/3

Then, you could substitute this expression for y into the second equation to solve for x:

4x + 6((9 - 2x)/3) - 18 = 0

4x + (54 - 12x)/3 - 18 = 0

(12x - 54)/3 + 4x - 18 = 0

(12x - 72)/3 = 0

12x - 72 = 0

12x = 72

x = 6

Substituting this value for x back into the first equation, you can solve for y:

2(6) + 3y - 9 = 0

12 + 3y - 9 = 0

3y = -3

y = -1

Therefore, the solution to this system of equations is x = 6 and y = -1. Since there is at least one solution, this system is consistent.

The complete question is:-

Is the system of linear equations 2x+3y-9=0 and 4x+6y-18=0 consistent? justify your answer.

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How do you write numbers in Excel?

Answers

Go to the Home tab and choose Number from the drop-down menu. In addition, you have the following choices: When choosing Number, press CTRL + 1. Right-click the cell or cell range, choose Format Cells..., then choose Number.

what are numbers ?

To calculate and represent a quantity, a number, an arithmetic value, is needed. Numbers are represented by mathematical inscriptions, such the letter "3." Using logical symbols or digits to represent numbers is known as a number system.

here ,

The cells you want to format should be selected.

Place your cursor over the Dialog Box Launcher next to Number on the Home tab.

Click Fraction in the Category list.

Select the desired fraction format type from the Type list by clicking it.

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What are the factors of the expression 2x² 5x 12?

Answers

The factors of the expression 2[tex]x^{2}[/tex] -5x -12 are (x - 4) and (2x+3)

given that

2[tex]x^{2}[/tex] -5x -12 =0

in the above equation

a = 2[tex]x^{2}[/tex]

b =-5x

c = -12

now we need to multiply a and c

a * c = 2[tex]x^{2}[/tex] * -12 = -24[tex]x^{2}[/tex]

now split b into two terms such that sum is equal to -5x  and their product is -24

-5x = -8x +3x

2[tex]x^{2}[/tex] -5x -12 =0

2[tex]x^{2}[/tex] -8x + 3x -12 =0

2x(x - 4)+3(x-4) =0

(2x+3)(x-4) =0

The factors of the expression 2[tex]x^{2}[/tex] -5x -12 are (x - 4) and (2x+3)

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What is the inverse of +9?

Answers

The inverse of the equation "y = 3x + 9" is "y = x/3 - 3"  .

The Inverse Function is defined as a function in which domain of the original function becomes the range of inverse function and range of given function becomes the domain of inverse function.

the equation is given to be : y = 3x + 9 ;

to find the inverse we need to express the above equation in term of y .

subtracting 9 from both sides ,

we get ;

y - 9 = 3x + 9 - 9 ;

y - 9 = 3x ;

3x = y - 9 ;

x = y/3 - 9/3 ;

x = y/3 - 3 ;

switching x and y ,

we get ;

y = x/3 - 3 ;

Therefore , the inverse is y = x/3 - 3  .

The given question is incomplete , the complete question is

What is the inverse of the equation y = 3x + 9 ?

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Shivani bought egg at $30 per 10 and old at rate of $46. 80 per dozen. Find gain or lo percentage

Answers

Answer:

30% gain

Step-by-step explanation:

$30 for 10 = $3 each

$46.80 for 12 = $3.9 each

percentage change = (final price- initial price)/inital price  *100

3.9-3 = 0.9

0.9/3 = 0.3

0.3 x 100 = 30

so gain of 30%

Solve this system of equations by graphing. First graph the equations, and then type the solution.

Answers

The graph of the equation given is mentioned below.

What is plot point in graph ?

Whenever we draw a point on our grid, we'll call it "plotting a point." The grid is really called a "graph" and the points we plot are called "coordinates." These are really locations on a plane -- we're just finding and labeling them.

Equation given,

y = 3/5x - 1    ----eq(i)

y = 2/5x        -----eq(ii)      

Now, for this two equation we infinite points for real numbers.

Now, take some points to plot the graph.

First for the eq(i)

Put x = 0, so y = -1

Put x = 5, so y = 2

Points for eq(i) is (0, -1) and (5, 2)

Now, for eq(ii)

Put x = 0, so y = 0

Put x = 5, so y = 2

Points for eq(ii) is (0, 0) and (5, 2)

Common point is (5, 2)

Now, plot this point on graph.

Hence, for more clarity graph of the equation given is mentioned below.

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The cost of holding a children’s birthday party at a roller rink is a function of n , the number of people in the party . The cost , c , can be represented with this set of rulesB . Which graph represents the function on the coordinate plane

Answers

it will cost #150 to have a party with 9 people, and it will cost #260 to have a party with 20 people

Graph is attached:

What is Piecewise function?

A piecewise function is used to relate multiple functions at different intervals

The cost for 9 people

This means that:

n=9

When n = 9, the cost function is:

C(9)=150

Hence, it will cost #150 to have a party with 9 people

The cost for 20 people

This means that:

n=20

When n = 20, the cost function is:

C(20)=260

Hence, it will cost #260 to have a party with 20 people

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Domain
1
2
3
Range
5
7
9
Does the mapping represent a function?

Answers

Answer:

bro what u doin this on a quiz u aint goin do this on time

Step-by-step explanation:

What is the mean deviation of first 10 even natural numbers A 5 B 5.5 C 10 D 10 5?

Answers

To find the mean deviation of a set of numbers, you need to first find the average (mean) of the set, and then for each number in the set, subtract the mean and take the absolute value of the result. The mean deviation is then the average of these absolute values.

For the first 10 even natural numbers (2, 4, 6, 8, 10, 12, 14, 16, 18, 20), the mean is (2 + 4 + 6 + 8 + 10 + 12 + 14 + 16 + 18 + 20) / 10 = 60/10 = 6.

To find the mean deviation, you would subtract the mean from each number, take the absolute value of the result, and then average those values. The mean deviation of the first 10 even natural numbers is therefore (|6 - 2| + |6 - 4| + |6 - 6| + |6 - 8| + |6 - 10| + |6 - 12| + |6 - 14| + |6 - 16| + |6 - 18| + |6 - 20|) / 10 = (4 + 2 + 0 + 2 + 4 + 6 + 8 + 10 + 12 + 14) / 10 = 5.5.

So the answer is B: 5.5.

What are natural numbers in mathematics?

Numbers in Nature When counting or organizing objects, the numbers 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10 are utilized. Absolute numbers are integers and zeros. neither a fraction nor a decimal.

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10x + 8 = 8
-8-8
10x = 0 10 [?]

Answers

Answer:

the answer is three

The coordinate 2 has a weight of 2,

the coordinate 3 has a weight of 2,

and the coordinate 10 has a weight of 1.

Find the weighted average.

Answers

The coordinates' weighted average is 4

How is the weight average calculated?The "weighted average" is the average of a group of numbers, each of which has a unique "weight" or value. Add the results after dividing each number by its weight to obtain the weighted average. A weighted average or mean is one in which, as opposed to considering each item equally, each item being averaged is multiplied by a number (weight) based on the item's relative importance.

The given parameters are:

Coordinate 2 has a weight of 2

Coordinate 3 has a weight of 2

Coordinate 10 has a weight of 1

The weight average is then calculated as:

Weight average = Sum of (Weight * Coordinate)/Sum of Weights

So, we have:

Weight average = (2 × 2 + 3 ×2 + 10 × 1)/(2 + 2 + 1)

Evaluate the quotient

Weight average = 4

Hence, the weight average of the coordinates is 4.

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What are the six steps of copying an angle?

Answers

Angle can be copied by following 6 steps.

How to copy an angle?

These are the steps to copy an angle:

1.Make point B the center of the working line (l).

2.Create an arc (A, r) that intersects the two sides of angle A at locations S and T by setting your compass to any radius r.

3.Create an arc (B, r) with a point V where it intersects the line l.

4.Build an arc (S, ST).

5.Create an arc at point W where (V, ST) intersects (B, r).

6.You're done after you draw line BW.

Angle can be copied by following 6 steps.

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A deli is trying out new labels for their cylindrical-shaped wheels of cheese. The label covers the entire wheel except the circular top and bottom.

If the wheel has a radius of 30 centimeters and a height of 20 centimeters, how many square centimeters of the wheel does the label cover? (Approximate using pi equals 22 over 7)

Answers

The required area that the label would cover is given as 3771.4 cm².

As mentioned in the question,
the wheel has a radius of 30 centimeters and a height of 20 centimeters,

What is surface area?

The surface area of any shape is the area of the shape that is faced or the Surface area is the amount of area covering the exterior of a 3D shape.

here,
Area of the label, = 2πrh
Substitute the value in the above formula,
Area of the label = 2 × 22 / 7 × 30 × 20
Area of the label = 3771.4 cm²

Thus, the required area that the label would cover is given as 3771.4 cm².

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Answer: Then aswer the question wit your broke answer

Step-by-step explanation:

suppose that people's heights (in centimeters) are normally distributed, with a mean of 170 and a standard deviation of 5. we find the heights of 80 people. (you may need to use the standard normal distribution table. round your answers to the nearest whole number.) (a) how many would you expect to be between 165 and 175 cm tall? 55 correct: your answer is correct. people (b) how many would you expect to be taller than 166 cm?

Answers

a) 55 people expect to be between 165 and 175 cm.

b) 76 people to be taller than 166 cm.

What is Standard normal distribution?

The standard normal distribution is a special type of normal distribution where the mean is 0, and the standard deviation is 1.

a) To answer this question, we can use the standard normal distribution table to find the proportion of heights that fall within certain ranges of the mean.

The standard normal distribution table gives us the proportion of values within a certain number of standard deviations of the mean.

Since the standard deviation of the heights is 5, we can find the proportion of heights between 165 and 175 cm by looking at the range of values that are one standard deviation below and one standard deviation above the mean.

The mean of the heights is 170, so one standard deviation below the mean is 170 - 5 = 165. One standard deviation above the mean is 170 + 5 = 175. Therefore, the range of heights that are one standard deviation below and one standard deviation above the mean is 165 to 175.

If we look at the standard normal distribution table, we find that approximately 68% of the values fall within one standard deviation of the mean. Since 80 is approximately 68% of 118, we would expect approximately 55 people to have heights between 165 and 175 cm.

Hence, 55 people expect to be between 165 and 175 cm.

b) For the second part of the question, we can find the proportion of heights that are taller than 166 cm by looking at the range of values that are more than one standard deviation above the mean.

The mean of the heights is 170, so more than one standard deviation above the mean is anything greater than 175. If we look at the standard normal distribution table, we find that approximately 95% of the values fall within two standard deviations of the mean.

Since 80 is approximately 95% of 84, we would expect approximately 76 people to be taller than 166 cm.

Hence, 76 people to be taller than 166 cm.

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The population of a city has increased by 27% since it was last measured. If the current population is 63,500 , what was the previous population?

Answers

Answer:

50000

Step-by-step explanation:

We know it increase 27% since it was last measured

100% + 27% = 127%

We have to find 1%

We take 63500 divided by 127 = 500

500 times 27 = 13500

Now we have to take 63500 and subtract by 13500 to find the previous population.

63500 - 13500 = 50000

So, the previous population is 50000

On a radar screen, a plane is located at A(-2, 4) is flying toward B(4, 3). Another plane,
located at C(-3, 1) is flying toward D(3, 0). Are the planes' paths perpendicular? Show
work AND explain.

**i saw w/ the answer but not with the explanation… PLEASE explain!!

Answers

No, paths of planes will be not be perpendicular as their slopes comes out to be equal.

What is slope ?

A line's slope in mathematics is defined as the ratio of the change in the y coordinate to the change in the x coordinate. Both the net change in the y-coordinate and the net change in the x-coordinate are denoted by Δy and Δx, respectively.

As a result,

m = change in y/change in x  = Δy/Δx

is the formula for the change in y-coordinate with respect to the change in x-coordinate. where "m" represents a line's slope.

Slope of path of plane 1 = [tex]m_{1}[/tex]

 [tex]\frac{3-4}{4-(-2)}\\ =\frac{-1}{6} \\[/tex]

Slope of path of plane 2= [tex]m_{2}[/tex]

[tex]=\frac{0-1}{3-(-3)}\\ =\frac{-1}{6}[/tex]

As slope of paths of planes are equal so we can say they are moving parallel to each other in same direction.

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A runner sprinted for 198 yards . How many feet is this?

Answers

Answer: 594 feet
.
.
.
.

find the equation of tangent normal to the curve y=3x-x^3 at points where it cuts the x-axis​

Answers

Correct Question:-

Find the equations of lines normal to the curve [tex]\rm{y=3x-x^3}[/tex] at points where it cuts the x axis.

[tex]\quad[/tex]

Solution:-

The given curve,

[tex]\longrightarrow\rm{y=3x-x^3}[/tex]

Differentiating wrt x we get,

[tex]\longrightarrow\rm{\dfrac{dy}{dx}=3-3x^2}[/tex]

This term is slope of tangent on the curve at a point (x, y).

Taking reciprocal,

[tex]\longrightarrow\rm{\dfrac{dx}{dy}=\dfrac{1}{3-3x^2}}[/tex]

and multiplying by -1,

[tex]\longrightarrow\rm{-\dfrac{dx}{dy}=\dfrac{1}{3x^2-3}}[/tex]

Now this term is slope of normal on the curve at a point (x, y).

[tex]\longrightarrow\rm{n(x)=\dfrac{1}{3(x^2-1)}}[/tex]

[tex]\quad[/tex]

The points where the curve [tex]\rm{y=3x-x^3}[/tex] cuts x axis is obtained by equating y = 0.

[tex]\longrightarrow\rm{0=y}[/tex]

[tex]\longrightarrow\rm{0=3x-x^3}[/tex]

[tex]\longrightarrow\rm{0=x(3-x^2)}[/tex]

[tex]\longrightarrow\rm{0=x(\sqrt3-x)(\sqrt3+x)}[/tex]

[tex]\Longrightarrow\rm{x\in\left\{-\sqrt3,\ 0,\ \sqrt3\right\}}[/tex]

So the points where the curve cuts x axis are (-√3, 0), (0, 0) and (√3, 0).

[tex]\quad[/tex]

Consider the point (-√3, 0).

The slope of normal at this point is,

[tex]\longrightarrow\rm{n(-\sqrt3)=\dfrac{1}{3((-\sqrt3)^2-1)}}[/tex]

[tex]\longrightarrow\rm{n(-\sqrt3)=\dfrac{1}{6}}[/tex]

Then equation of normal at this point is,

[tex]\longrightarrow\rm{y-0=\dfrac{1}{6}(x+\sqrt3)}[/tex]

[tex]\longrightarrow\bf{x-6y+\sqrt3=0}[/tex]

[tex]\quad[/tex]

Consider the point (0, 0).

The slope of normal at this point is,

[tex]\longrightarrow\rm{n(0)=\dfrac{1}{3((0)^2-1)}}[/tex]

[tex]\longrightarrow\rm{n(0)=-\dfrac{1}{3}}[/tex]

Then equation of normal at this point is,

[tex]\longrightarrow\rm{y-0=-\dfrac{1}{3}(x-0)}[/tex]

[tex]\longrightarrow\bf{x+3y=0}[/tex]

[tex]\quad[/tex]

Consider the point (√3, 0).

The slope of normal at this point is,

[tex]\longrightarrow\rm{n(\sqrt3)=\dfrac{1}{3((\sqrt3)^2-1)}}[/tex]

[tex]\longrightarrow\rm{n(\sqrt3)=\dfrac{1}{6}}[/tex]

Then equation of normal at this point is,

[tex]\longrightarrow\rm{y-0=\dfrac{1}{6}(x-\sqrt3)}[/tex]

[tex]\longrightarrow\bf{x-6y-\sqrt3=0}[/tex]

[tex]\quad[/tex]

Hence the equations of lines normal to the curve [tex]\rm{y=3x-x^3}[/tex] at points where it cuts x axis are,

[tex]\longrightarrow\left\{\begin{array}{ll}\bf{x-6y-\sqrt3}&\bf{=0}\\\bf{x+3y}&\bf{=0}\\\bf{x-6y+\sqrt3}&\bf{=0}\end{array}\right.[/tex]

What is the slope of a line perpendicular to 3x?

Answers

The slope of a line perpendicular to 3x is [tex]-\frac{1}{3}[/tex] .

What is slope ?

The slope of a line is a measure of its steepness. Mathematically, slope is calculated as "rise over run" (change in y divided by change in x).

What is perpendicular ?

The word perpendicular means at right angles and this is because when two lines meet, they form right angles. Perpendicular lines can face in any direction such as up and down, crossways, and side-to-side.

Have given,

Slope of the line  y=3x ,

you can compare it to  y=mx+c  form where  m  is the slope of the line.

y = 3x

differentiate respect of x

[tex]\frac{dy}{dx} = 3[/tex]

Now, the slope of the line perpendicular to the line that has a slope of m is [tex]-\frac{1}{m}[/tex]

The slope of a line perpendicular to 3x is [tex]-\frac{1}{3}[/tex] .

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