I can’t seem to figure what it is missing from my answer to get full marks. Can anyone please help me

The concrete cost for the pillar was $37,879.52.

Velocity is a quantity that indicates how quickly and in which direction a point is moving. A point always moves in a direction that is tangent to its path; for example, a circular path's direction at any instant is perpendicular to a line connecting the point to the circle's centre (a radius). The magnitude of the velocity (or speed) is the rate at which the point moves along its path in time.

If a point moves a certain distance along its path in a given time interval, its average speed is equal to the distance moved divided by the time taken. A train travelling 100 kilometres in two hours, for example, has an average speed of 50 kilometres per hour.

The cylinder's radius is equal to its diameter divided in half, or 12/2, or 6 metres.

The cylinder's volume is determined by:

[tex]V = pi * r^2 * h[/tex]

[tex]V = 3.14 * 6^2 * 4[/tex]

V equals 452,16 cubic metres

The price of the concrete is $82 per cubic metre, making the overall price:

$82 * 452.16 = $37,879.52

Hence, the pillar's concrete expense came to $37,879.52.

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6% of the students surveyed said that their favorite music is Country music. This may be due to its classic sound, relatable lyrics, and lifestyle connection.

Number is an abstract concept used to describe a quantity, or amount, of something. It is used in mathematics to quantify things, such as in counting, measuring, and representing data. Numbers are used to describe the size, quantity, or position of objects or people in space or time. They are also used to classify, classify, and identify items in a variety of fields. Numbers can be used to represent ideas and concepts, such as in equations, formulas, and other mathematical operations.

Six students represents 6 out of 100 students, so the percent of students who said that their favorite music is Country music is 6%. Rap, Pop, and Latin music each represent 12% of the students, for a total of 36%. The remaining 64% of the students may have chosen other genres, or did not answer the question.

The popularity of Country music among the students may have several explanations. First, Country music is often considered to be a classic genre, and the students may have grown up with the music and developed an appreciation for it. Second, many Country music songs have lyrics that are easy to relate to, which can resonate with the students. Finally, Country music is often associated with a certain lifestyle, and the students may be drawn to its image.

In conclusion, 6% of the students surveyed said that their favorite music is Country music. This may be due to its classic sound, relatable lyrics, and lifestyle connection.

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The derivative of f(x) = (1 + x4 - 1/x)5/3 using the chain rule is (5/3)(1 + x4 - 1/x)2/3(4x3 + 1/x2).

To find the derivative of f(x) = (1 + x^4 - 1/x)^5/3 using the chain rule, we need to use the following steps:

1. Identify the inner function and the outer function. In this case, the inner function is 1 + x^4 - 1/x and the outer function is ( )^5/3.
2. Find the derivative of the outer function with respect to the inner function. This is done by using the power rule: (5/3)( )^2/3.
3. Find the derivative of the inner function with respect to x. This is done by using the power rule and the quotient rule: 4x^3 + 1/x^2.
4. Multiply the derivative of the outer function and the derivative of the inner function together to get the derivative of the original function: (5/3)(1 + x^4 - 1/x)^2/3(4x^3 + 1/x^2).

Therefore, the derivative of f(x) = (1 + x^4 - 1/x)^5/3 using the chain rule is (5/3)(1 + x^4 - 1/x)^2/3(4x^3 + 1/x^2).

Here is the answer formatted in HTML:

To find the derivative of f(x) = (1 + x4 - 1/x)5/3 using the chain rule, we need to use the following steps:

Therefore, the derivative of f(x) = (1 + x4 - 1/x)5/3 using the chain rule is (5/3)(1 + x4 - 1/x)2/3(4x3 + 1/x2).

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The value of the expression a + 4 when a = 7 is 11.

Algebra is the study of abstract symbols, while logic is the manipulation of all those ideas.

The acronym PEMDAS stands for Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This approach is used to answer the problem correctly and completely.

We are given that;

Function= a+4

Now,

By algebra

If a = 7, then we can substitute this value into the expression a + 4 to get:

=a + 4

= 7 + 4

= 11

Therefore, by algebra the answer will be 11.

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The complete question is;

Evaluate the expression a+4 when a=7?

It is difficult to predict the future of financial services and whether or not we will reach full decentralization. However, there are several factors to consider when analyzing the potential for full decentralization of financial services.

First, it is important to consider the role of government regulation in the financial sector. Currently, banks and other financial institutions are heavily regulated in order to protect consumers and ensure the stability of the financial system. It is unclear how government regulation would fit into a fully decentralized financial system, as there would be no central authority to oversee and regulate transactions.

Second, while cryptocurrencies and other decentralized financial services offer many benefits, there are also potential risks and drawbacks. For example, the lack of regulation and oversight can make it easier for fraud and other illegal activities to occur. Additionally, the volatility of cryptocurrencies can make them a risky investment for consumers.

Finally, it is important to consider the role of trust in the financial system. Banks and other financial institutions have built up trust with consumers over time, and it may be difficult for a fully decentralized financial system to achieve the same level of trust without some form of central oversight.

In conclusion, while the decentralization of financial services offers many benefits, there are also potential risks and challenges that must be considered. It is difficult to predict if we will ever reach full decentralization of financial services, but it is clear that there are several factors that will play a role in determining the future of the financial system.

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Answer:

Step-by-step explanation:

The sum of A, B, and C is : A = [1, 3], B = [3, 11], C = [13, 4], ABC = [1+3, 3+11, 13+4] = [4, 14, 17]. Therefore, ABC is equal to [4, 14, 17].

To explain in more detail, A represents the set of numbers [1, 3], B the set of numbers [3, 11], and C the set of numbers [13, 4]. Adding all the elements of each set together gives the sum of A, B, and C as [4, 14, 17]. Adding along with mentioning the values together by putting commas in between them is a way to represent the values.

The representation of  set of numbers is always crucial in determining the value of entire set. In computation we add and then multiply the values given inside the set. In order to get a computed value of the set.

A = [1 3), B = 3 11, and c = 13 4. ABC can be computed by the given formula: ABC = AB + BCAB = 1 * 3 + 3 * 4 + 13 * 0 = 3 + 12 + 0 = 15 BC = 3 * 11 + 4 * 1 + 0 * 13 = 33 + 4 + 0 = 37. So, ABC = AB + BC = 15 + 37 = 52. Therefore, the value of ABC is 52.

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According to the triangle's "angle sum property," a triangle's interior angles add up to 180°.

Take a triangle ABC; to demonstrate the triangle's above-mentioned, angle sum property draw a line PQ parallel to its BC side.

PAB + BAC + QAC Equals 180 degrees.

(1)

PQ||BC and AB, AC, and AB, AC are transversals, therefore QAC = ACB (a pair of alternate angle)

Moreover, PAB = CBA (a pair of alternate angle)

When QAC and PAB's values are substituted in equation (1), ACB + BAC + CBA = 180°.

As a result, a triangle's interior angles sum up to 180°.

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The angle opposite to the side length c is given as follows:

θ = 53º.

The Law of Cosines is a trigonometric formula that relates the lengths of the sides of a triangle to the cosine of one of its angles. It is also known as the Cosine Rule.

The Law of Cosines states that for any triangle with sides a, b, and c and angle C opposite to side c, the following equation holds true:

c^2 = a^2 + b^2 - 2ab cos(C)

The parameters for this problem are given as follows:

a = 122.5, b = 58.2, c = 164.5.

Hence the measure of angle θ is given as follows:

c^2 = a^2 + b^2 - 2ab cos(θ)

164.5² = 122.5² + 58.2² - 2 x 122.5 x 58.2 x cos(θ)

14259cos(θ) = 8666.76

cos(θ) = 8666.76/14259

θ = arccos(8666.76/14259)

θ = 53º.

The angle is opposite to the side length C.

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Answer: Using 45π cm^3

a) h = 5 cm

b) approximately $2.83

c) h = 9/5 cm

d) approximately $9.90

Step-by-step explanation:

a) The volume of a cylinder is given by the formula [tex]V = \pi r^2h[/tex]. Given that the volume is equal to [tex]45\pi cm^{3}[/tex] and radius is [tex]3cm[/tex], we can plug in.

[tex]45\pi = 3^2h\pi \\45\pi = 9h\pi\\\frac{45\pi }{9\pi } = h\\ h = 5[/tex]

b) Since coffee costs $0.02 per cubic centimeter, and there are [tex]45\pi[/tex] cubic centimeters, 0.02 x [tex]45\pi[/tex] = 2.8274338, and rounding gives $2.83

c) Using the same formula from part a, we plug in [tex]5cm[/tex] for r instead of [tex]3cm[/tex].

[tex]45\pi = 5^2h\pi \\45\pi =25h\pi \\\frac{45\pi }{25\pi } = h\\h = \frac{45}{25} = \frac{9}{5}[/tex]

d) Because hot chocolate powder costs $0.07 per cubic centimeter, and there are [tex]45\pi[/tex] cubic centimeters, 0.07 x [tex]45\pi[/tex] = 9.89601685, and rounding makes it $9.90

1... The coefficient of correlation between X and Y is 0.87, indicating that the linear relationship between the variables is close.

2.... The forecasted sales volume is 410.5 + C thousand Euro.

1) To calculate the correlation coefficient and make conclusions about the closeness of the linear relationship, you can use the formula for the coefficient of correlation (r): r = (∑XiYi - n*Xm*Ym) / √((∑Xi2 - n*Xm2) * (∑Yi2 - n*Ym2)), where n is the number of observations (10 in this case), Xm is the mean of X (24.9 in this case), and Ym is the mean of Y (150 in this case). Calculating, we get: r = (39423 - 10*24.9*150) / √((6557 - 10*24.92) * (237366 - 10*1502)) = 0.87.

2) To find the linear regression from variable Y to the X, you can use the formula for the coefficient of determination (b): b = (∑XiYi - n*Xm*Ym) / (∑Xi2 - n*Xm2). Calculating, we get: b = (39423 - 10*24.9*150) / (6557 - 10*24.92) = 8.21. Therefore, the linear regression equation is Y = 8.21X + C. To forecast the sales volume if the investment volume is planned to be 50 thousand Euro, substitute 50 in the equation and calculate: Y = 8.21*50 + C = 410.5 + C.  

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Answer: From the passage, we can conclude that Tuan has had a strenuous basketball workout and has also done an hour's worth of weight-training exercises, which suggests that he has had a physically demanding day. Additionally, it is mentioned that he is experiencing some tiredness towards the end of the day, which is not uncommon after such an active day. Therefore, we can conclude that Tuan is experiencing physical fatigue or tiredness due to his physical activity.

Step-by-step explanation:

The supplied statement indicates that there is a mistake in the D set of conditional probabilities.

Students do not "lose their inherent liberty of speech or thought now at schoolhouse gate," according to a 1969 Supreme Court decision. This also holds true for other essential rights.

Given collection of related objects

A (6, 8) (-6, 8)

B (1, 1) (-1, 1)

C (0, 3) (0, 3)

D (3, 2) (3, -2)

Finding the set with an erroneous refraction to across y axis is necessary.

The value of y mostly in point (x,y) will remain the same when a point is mirrored across the y axis, or the sign of the x value will be altered to the opposite. For example, with a point (x,y), the reflection across the y axis will also be (-x,y)

Point A: Y is the same, but the symbol of x is now the opposite.

Point B: The y is the same, but the sign of the x has been altered to the opposite.

Point C: y and x are both zero.

Point D-y is not the same, and the sign of x has not been altered to the opposite.

Hence, there is a mistake in set D.

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Answer:

Для применения метода деления отрезка пополам нужно использовать тот факт, что функция x^3 + 2x + 4 непрерывна на всей числовой оси. Кроме того, нужно заметить, что функция монотонно возрастает на всей числовой оси, так как ее производная 3x^2 + 2 всегда положительна.

Начнем с интервала [a, b], где a = -2 и b = 0. Тогда значение функции в точке a равно -4, а значение функции в точке b равно 4. Значит, на этом интервале есть хотя бы один корень уравнения x^3 + 2x + 4 = 0.

Посередине интервала [a, b] находим точку c = (a + b) / 2 = -1. Значение функции в точке c равно 1, то есть на интервале [c, b] нет корней уравнения.

Затем выбираем интервал [a, c] и повторяем процесс. Находим точку d = (a + c) / 2 = -1.5. Значение функции в точке d равно -1.375, то есть на интервале [d, c] есть корень уравнения.

Продолжаем делить отрезки пополам и находить корни, пока не достигнем требуемой точности. Например, следующая точка будет e = (d + c) / 2 = -1.25. Значение функции в точке e равно 0.234375, то есть на интервале [e, c] есть корень уравнения.

Таким образом, метод деления отрезка пополам дает корень уравнения x^3 + 2x + 4 = 0 на интервале [-1.25, -1.125], который можно записать в виде x ≈ -1.1875 (с точностью до Ɛ=0,01).

After 5 years, the balance of your account with an initial investment of $2,500, 6% annual interest compounded quarterly, will be $3,325.81. This can be calculated using the following formula:

Balance = P(1 + r/n)nt

Where:
P = Principal Amount
r = Annual Interest Rate
n = Number of Compounding Periods
t = Number of Years

Therefore, for your given example, the equation would be:
Balance = 2500(1 + 0.06/4)4 x 5
Balance = 2500(1.015)20
Balance = 2500(1.32581)
Balance = $3,325.81

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Answer:

8183

Step-by-step explanation:

Plug in calculator

500(1+0.15)^20

Answer:

Step-by-step explanation:

// Solve equation [2] for the variable  x

 [2]    x = y + 1

// Plug this in for variable  x  in equation [1]

  [1]    (y +1) - 2y = 9

  [1]     - y = 8

// Solve equation [1] for the variable  y

  [1]    y = - 8

// By now we know this much :

   x = y+1

   y = -8

// Use the  y  value to solve for  x

   x = (-8)+1 = -7

Solution :

{x,y} = {-7,-8}

The result of multiplying (x+5)^(2) using the rule for the square of a binomial is x^(2) + 10x + 25.

To multiply using the rule for the square of a binomial, we can use the formula (a+b)^(2) = a^(2) + 2ab + b^(2). In this case, a = x and b = 5, so we can plug these values into the formula:

(x+5)^(2) = (x)^(2) + 2(x)(5) + (5)^(2)

Simplifying the right side of the equation gives us:

(x+5)^(2) = x^(2) + 10x + 25

Therefore, the result of multiplying (x+5)^(2) using the rule for the square of a binomial is x^(2) + 10x + 25.

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a) The equation that can be used to determine the total cost, y, for a tickets ordered in a transaction is y = 15.50x + 2.25

b) The number of movie tickets sold is x = 10 tickets

Equations are statements in mathematics that have two algebraic expressions on either side of the equals (=) sign.

It displays the similarity of the connections between the phrases on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are examples of the parts of an equation. When creating an equation, the "=" symbol and terms on both sides are necessary.

Given data ,

Let the total cost of the movie be represented as y

Let the number of tickets sold be x

Now , the cost of one movie ticket = $ 15.50

And , the cost of x tickets = $ 15.50x

The cost of the transaction = $ 2.25

So , the total cost y = cost of x tickets + cost of the transaction

On simplifying the equation , we get

y = 15.50x + 2.25   be equation (1)

b)

Let the number of tickets be x

Now , the total cost of the transaction is y = $ 157.25

So , y = 15.50x + 2.25

On simplifying , we get

157.25 = 15.50x + 2.25

Subtracting 2.25 on both sides , we get

15.50x = 155

Divide by 15.5 on both sides , we get

x = 10 tickets

Hence , the number of tickets sold is 10 tickets

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The complete question is attached below :

Part A

Which equation can be used to determine the total cost, y, for a tickets ordered in a transaction?

O y = 2.25x + 15.50

O y = 15.50x +2.25

x = 2.25y + 15.50

O = 15.50y +2.25

Part B

If the total cost of a transaction is $157.25, how many movie tickets were ordered?

The value of the discriminant is 0 and the number of real solutions is 1

For the given equation, 36x^(2)-24x+4=0, we can find the value of the discriminant and the number of real solutions using the quadratic formula.

The quadratic formula is x = (-b ± √(b^(2)-4ac))/(2a), where a, b, and c are the coefficients of the equation.

The discriminant is the part of the formula under the square root, b^(2)-4ac.

In this equation, a = 36, b = -24, and c = 4. Plugging these values into the discriminant, we get:

Discriminant = (-24)^(2)-4(36)(4) = 576-576 = 0

Since the discriminant is equal to 0, there is only one real solution to this equation.

Therefore, the value of the discriminant is 0 and the number of real solutions is 1.

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The comparison of textbooks is History textbooks > Science textbooks. The mass of the stacks of textbook differ by 0.15 kilograms.

Multiplication of two numbers is defined as the addition of one of the number repeatedly until the times of the other number.

a × b means that a is added to itself b times or b is added to itself a times.

Given that,

Mass of science textbook = 1.15 kilograms

Mass of 4 science textbooks = 4 × 1.15 kilograms

                                                = 4.6 kilograms

Mass of a history textbook = 950 grams = 0.95 kilograms

Mass of 5 history textbooks = 5 × 0.95 kilograms

                                              = 4.75 kilograms

Part A :

History textbooks > Science textbooks

Part B :

Mass of History textbooks - Mass of science textbooks = 4.75 - 4.6

                                                                                            = 0.15 kilograms

Hence the history textbooks are 0.15 kilograms more.

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The volume of the rectangle is 120 cubic yards

It is important to note that the formula for calculating the volume of a rectangle is expressed as;

V = lwh

Given that the parameters are;

From the information given, we that;

Area = 15 square yards

That is, length and width

Then,

Volume = 15(8)

multiply the values

Volume = 120 cubic yards

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Answer:

Step-by-step explanation:

b because i did it

The null and alternative hypothesis for the given scenario is (H0: μ ≤ 1.5)  and (Ha: μ > 1.5).

The null hypothesis states that a population parameter is equal to a value. The null hypothesis is often an initial claim that researchers specify using previous research or knowledge.

Null Hypothesis (H0): The average time that teens use their phones before upgrading is 1.5 years or less (H0: μ ≤ 1.5).

Alternative Hypothesis (Ha): The average time that teens use their phones before upgrading is more than 1.5 years (Ha: μ > 1.5).

In words, the null hypothesis states that the average time that teens use their phones before upgrading is 1.5 years or less, which is consistent with the statement made by the phone company.

The alternative hypothesis states that the average time is more than 1.5 years, which is consistent with your mother's belief.

We use the symbol μ to represent the population means of the time that teens use their phones before upgrading.

Hence, the null and alternative hypothesis for the given scenario is (H0: μ ≤ 1.5)  and (Ha: μ > 1.5).

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John owes his mom R1041.6 after 2 years

To find out how much John owes his mom after 2 years, we need to calculate the interest on the loan. The formula for calculating interest is I = Prt, where I is the interest, P is the principal, r is the annual interest rate, and t is the time in years.

In this case, the principal is R840, the annual interest rate is 12% (or 0.12), and the time is 2 years. Plugging these values into the formula, we get:

I = (R840)(0.12)(2) = R201.6

So the interest on the loan is R201.6.

To find out the total amount John owes his mom, we need to add the interest to the principal:

Total amount owed = Principal + Interest = R840 + R201.6 = R1041.6

Therefore, John owes his mom R1041.6 after 2 years.

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A = 5,700,000 bacteria

The equation for the amount of bacteria present after one hour is A = 5,000,000 + 5,000,000(0.14%) bacteria. After factoring, the equation is A = 5,000,000(1 + 0.14%) bacteria. Using the given percent, the equation is A = 5,000,000(1 + 0.0014) bacteria. Finally, the answer is A = 5,700,000 bacteria.

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The value of the angles in the parallel line is 34 degrees.

When parallel are cut by a transversal line, angle relationships are formed such as corresponding angle, alternate interior angles, alternate exterior angles, linear angles, vertically opposite angles etc.

Therefore, the angle 5 can be found using the angle relationship.

Hence,

m∠1 ≅ m∠5(corresponding angles)

Corresponding angles are congruent to each other.

Therefore,

m∠5 = 34 degrees

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2. The exact value of sin (185° - 65°) is (√3/2)(cos (65°)) - (1/2)(sin (65°)).

3. The exact value of tan 255° is (1/√3 - √3)/2.

The sine function has a range of values between -1 and 1, and it is a periodic function that repeats every 2π radians or 360 degrees.

We can use the difference identity for sine to find the exact value of sin (185° - 65°):

sin (185° - 65°) = sin 185° cos 65° - cos 185° sin 65°

Since sin (180° + x) = -sin x and cos (180° + x) = -cos x to simplify the expression:

sin (185° - 65°) = sin (120°) cos (65°) + cos (120°) sin (65°)

= (√3/2)(cos (65°)) + (-1/2)(sin (65°))

= (√3/2)(cos (65°)) - (1/2)(sin (65°))

Therefore, the exact value of sin (185° - 65°) is (√3/2)(cos (65°)) - (1/2)(sin (65°)).

Here,

tan 255° = tan (225° + 30°)

Using the tangent sum identity, we get:

tan (225° + 30°) = (tan 225° + tan 30°)/(1 - tan 225° tan 30°)

Since tan 225° = tan (225° - 180°) = tan (-45°) = -1 and tan 30° = (√3)/3, we can substitute these values:

tan 255° = (-1 + (√3)/3)/(1 + 1/√3)

Simplifying the denominator by rationalizing the denominator, we get:

tan 255° = (-1 + (√3)/3)/(√3 + 1)

Multiplying the numerator and denominator by (√3 - 1), we get:

tan 255° = [(-1 + (√3)/3)(√3 - 1)]/[(√3 + 1)(√3 - 1)]

= [(√3 - 1 - 1 + 1/√3)]/(2)

= [√3 - 2 + 1/√3]/2

= (1/√3 - √3)/2

Therefore, the exact value of tan 255° is (1/√3 - √3)/2.

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JK←→ and LM←→− are neither parallel nor perpendicular.

To determine if JK←→ and LM←→− are parallel, perpendicular, or neither, we need to examine their slopes.

The slope of a line passing through two points (x₁, y₁) and (x₂, y₂) is given by:

slope =(y₂ - y₁)/(x₂ - x₁)

The slope of JK←→ passing through J(-10, -7) and K(-4, 1) is:

slope(JK) = (1 - (-7)) / (-4 - (-10)) = 8 / 6

= 4 / 3

The slope of LM←→− passing through L(-3, 2) and M(-4, -2) is:

slope(LM) = (-2 - 2) / (-4 - (-3))

= -4 / (-1)

= 4

If two lines are parallel, their slopes are equal. If two lines are perpendicular, their slopes are negative reciprocals of each other. Otherwise, they are neither parallel nor perpendicular.

Comparing the slopes of JK←→ and LM←→−, we see that they are not equal, so they are not parallel. To determine if they are perpendicular, we need to calculate the negative reciprocal of the slope of JK←→:

slope(JK) = 4 / 3

negative reciprocal of slope(JK) = -3 / 4

If the negative reciprocal of the slope of JK←→ is equal to the slope of LM←→−, then the two lines are perpendicular. Let's check:

slope(LM) = 4

-3 / 4 ≠ 4

Since -3 / 4 is not equal to 4, the lines are neither parallel nor perpendicular.

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