Question 1. (6 marks) Scientific studies suggest that some animals regulate their intake of different types of food available in the environment to achieve a balance between the pro- portion, and ulti

The absolute extremes of the function f(x) = 2x^3 – 6x^2 – 18x over the interval 1 < x < 4 need to be determined. The absolute maximum occurs at x = ?, and the maximum value is ?.

To find the absolute extremes, we need to evaluate the function at the critical points and endpoints of the interval. First, we find the critical points by taking the derivative of f(x) and setting it equal to zero: f'(x) = 6x^2 - 12x - 18 = 0

We can solve this quadratic equation to find the critical points, which are x = -1 and x = 3. Next, we evaluate the function at the critical points and endpoints:

f(1) = 2(1)^3 - 6(1)^2 - 18(1) = -22

f(3) = 2(3)^3 - 6(3)^2 - 18(3) = -54

f(4) = 2(4)^3 - 6(4)^2 - 18(4) = -64

Comparing the values, we can see that the absolute maximum occurs at x = 1, with a maximum value of -22. Therefore, the absolute maximum of f(x) over the interval 1 < x < 4 is -22.

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The given series Σ (40 + 15 - n) diverges. When we say that a series diverges, it means that the series does not have a finite sum. In other words, as we add up the terms of the series, the partial sums keep growing without bound.

To determine the convergence or divergence of the series Σ (40 + 15 - n), we need to examine the behavior of the terms as n approaches infinity.

The given series is:

40 + 15 - 1 + 40 + 15 - 2 + 40 + 15 - 3 + ...

We can rewrite the series as:

(40 + 15) + (40 + 15) + (40 + 15) + ...

Notice that the terms 40 + 15 = 55 are constant and occur repeatedly in the series. Therefore, we can simplify the series as follows:

Σ (40 + 15 - n) = Σ 55

The series Σ 55 is a series of constant terms, where each term is equal to 55. Since the terms do not depend on n and are constant, this series diverges.

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To find the slope of the line tangent to the graph of the function y = x^4 + 3x^3 - 2x - 2 at the given value of x = -3, we need to find the derivative of the function and evaluate it at x = -3.

Let's find the derivative of the function y = x^4 + 3x^3 - 2x - 2 using the power rule:

dy/dx = 4x^3 + 9x^2 - 2

Now, substitute x = -3 into the derivative:

dy/dx = 4(-3)^3 + 9(-3)^2 - 2

      = 4(-27) + 9(9) - 2

      = -108 + 81 - 2

      = -29

Therefore, the slope of the line tangent to the graph of the function at x = -3 is -29.

So, the answer is D) -29

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To prove that the expression sin(e) csc(cose) + sec(tan(coto)) is an identity, we need to simplify it using trigonometric identities. Let's start:

Recall the definitions of trigonometric functions:

  - cosec(x) = 1/sin(x)

  - sec(x) = 1/cos(x)

  - tan(x) = sin(x)/cos(x)

Substituting these definitions into the expression, we have:

  sin(e) * (1/sin(cose)) + (1/cos(tan(coto)))

Since sin(e) / sin(cose) = 1 (the sine of any angle divided by the sine of its complementary angle is always 1), the expression simplifies to:

  1 + (1/cos(tan(coto)))

Now, we need to simplify cos(tan(coto)). Using the identity:

  tan(x) = sin(x)/cos(x)

  We can rewrite cos(tan(coto)) as cos(sin(coto)/cos(coto)).

Applying the identity:

  cos(A/B) = sqrt((1 + cos(2A))/(1 + cos(2B)))

  We can rewrite cos(sin(coto)/cos(coto)) as:

  sqrt((1 + cos(2sin(coto)))/(1 + cos(2cos(coto))))

Finally, substituting this back into our expression, we have:

  1 + (1/sqrt((1 + cos(2sin(coto)))/(1 + cos(2cos(coto)))))

  This is the simplified form of the expression.

By simplifying the given expression using trigonometric identities, we have shown that sin(e) csc(cose) + sec(tan(coto)) is indeed an identity.

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The common ratio of the geometric sequence is 3. The fifth term is 125 and the nth term is 6 * 3^(n-1).

Geometric Sequence a_1 =6, a_2=18, a_3=54

To find the common ratio of a geometric sequence, we divide any term by its preceding term.

Let's take the second term, 18, and divide it by the first term, 6. This gives us a ratio of 3. We can repeat this process for subsequent terms to confirm that the common ratio is indeed 3.

To find the common ratio r, divide each term by the previous term.

                                                 r=a_2/a_1=18/6=3

To find the fifth term:

                                                  a_5=a_4*r

                                                        =162*3

                                                        =486

To find the nth term:

                                                  a_n=a_1*r^(n-1)

                                                         =6*3^(n-1)

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(5/3)(x + 2)^3 - 10(x + 2)^2 + 20(x + 2) + C  is the final answer obtained by integrating, substituting and applying the power rule.

To evaluate the integral ∫(5x^2 + 2) dx by making the substitution u = x + 2, we can rewrite the integral as follows: ∫(5x^2 + 2) dx = ∫5(x^2 + 2) dx

Now, let's substitute u = x + 2, which implies du = dx:

∫5(x^2 + 2) dx = ∫5(u^2 - 4u + 4) du

Expanding the expression, we have: ∫(5u^2 - 20u + 20) du

Integrating each term separately, we get:

∫5u^2 du - ∫20u du + ∫20 du

Now, applying the power rule of integration, we have:

(5/3)u^3 - 10u^2 + 20u + C

Substituting back u = x + 2, we obtain the final result:

(5/3)(x + 2)^3 - 10(x + 2)^2 + 20(x + 2) + C

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The Root cause analysis uses one of the following techniques is (D) Ishikawa diagram.

The Root cause analysis is a problem-solving technique that aims to identify the underlying reasons or causes of a particular problem or issue.

It helps in identifying the root cause of a problem by breaking it down into its smaller components and analyzing them using a systematic approach.

The Ishikawa diagram, also known as a fishbone diagram or cause-and-effect diagram, is one of the most widely used techniques for conducting root cause analysis.

It is a visual tool that helps in identifying the possible causes of a problem by categorizing them into different branches or categories.

The Ishikawa diagram can be used in various industries, including manufacturing, healthcare, and service industries, and can help in improving processes, reducing costs, and increasing efficiency.

In summary, the root cause analysis technique uses the Ishikawa diagram to identify the underlying reasons for a particular problem.

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2.

sin 59 = x/17

x = 0.63 × 17

x = 10.8

3.

cos x = adj/hyp

cos x = 24/36

cos x = 0.66

x = 48.7°

The probability that the first student Mr. Beal selects has a pass or has completed the homework assignment is approximately 52%. c.

To find the probability that the first student Mr. Beal selects has a pass or has completed the homework assignment, we need to calculate the probability based on the given information.

Let's define the following events:

A: The selected student has a pass.

B: The selected student has completed the homework assignment.

Given information:

P(A) = 9/43 (probability that a student has a pass)

P(B) = 18/43 (probability that a student has completed the homework assignment)

P(A and B) = 7/43 (probability that a student has a pass and has completed the homework assignment)

We can use the principle of inclusion-exclusion to find the probability of the union of events A and B.

P(A or B) = P(A) + P(B) - P(A and B)

Plugging in the values, we get:

P(A or B) = (9/43) + (18/43) - (7/43)

= 27/43

To express the probability as a percentage, we multiply by 100:

P(A or B) = (27/43) × 100

≈ 62.79

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To find the vectors A • B and A + B - C, given A = (3, -2, 4), B = (-5, 7, 2), and C = (4, 6, -1), we perform the following calculations:

A • B is the dot product of A and B, which can be found by multiplying the corresponding components of the vectors and summing the results:

A • B = (3 * -5) + (-2 * 7) + (4 * 2) = -15 - 14 + 8 = -21.

A + B - C is the vector addition of A and B followed by the subtraction of C:

A + B - C = (3, -2, 4) + (-5, 7, 2) - (4, 6, -1) = (-5 + 3 - 4, 7 - 2 - 6, 2 + 4 + 1) = (-6, -1, 7).

Therefore, A • B = -21 and A + B - C = (-6, -1, 7).

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The most likely reason that a data analyst would use historical data instead of gathering new data is because the historical data may already be available and can provide valuable insights into past trends and patterns.

A data analyst would most likely use historical data instead of gathering new data due to its cost-effectiveness, time efficiency, and the ability to identify trends and patterns over a longer period. Historical data can provide valuable insights and inform future decision-making processes. Additionally, gathering new data can be time-consuming and expensive, so using existing data can be a more efficient and cost-effective approach. However, it's important for the data analyst to ensure that the historical data is still relevant and accurate for the current analysis.

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To determine the limits of integration for the given iterated integral, we need more specific information about the figure and the region R.

In order to find the limits of integration for the iterated integral, we need a more detailed description or a visual representation of the figure and the shaded region R. Without this information, it is not possible to provide precise values for the limits of integration.

In general, the limits of integration for a double integral over a region R in the xy-plane are determined by the boundaries of the region. These boundaries can be given by equations of curves, inequalities, or a combination of both. By examining the figure or the description of the region, we can identify the curves or boundaries that define the region and then determine the appropriate limits of integration.

Without any specific information about the figure or the shaded region R, it is not possible to provide the exact values for the limits of integration A, B, C, and D. If you can provide more details or a visual representation of the figure, I would be happy to assist you in finding the limits of integration for the given iterated integral.

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Complete question:

Answer:

[tex]\frac{1}{3}[/tex] mile

Step-by-step explanation:

Fairfax → Springdale + Springdale → Livingstone = [tex]\frac{1}{2}[/tex]

Fairfax → Springdale + [tex]\frac{1}{6}[/tex] = [tex]\frac{1}{2}[/tex] ( subtract [tex]\frac{1}{6}[/tex] from both sides )

Fairfax → Springdale = [tex]\frac{1}{2}[/tex] - [tex]\frac{1}{6}[/tex] = [tex]\frac{3}{6}[/tex] - [tex]\frac{1}{6}[/tex] = [tex]\frac{2}{6}[/tex] = [tex]\frac{1}{3}[/tex] mile

The second Taylor polynomial, T2(x), for the function f(x) = e^(x^2) based at b = 0 is given by:

T2(x) = f(b) + f'(b)(x - b) + f''(b)(x - b)^2/2!

To find T2(x), we need to evaluate f(b), f'(b), and f''(b). In this case, b = 0. Let's calculate these derivatives step by step.

First, we find f(0). Plugging b = 0 into the function, we get f(0) = e^(0^2) = e^0 = 1.

Next, we find f'(x). Taking the derivative of f(x) = e^(x^2) with respect to x, we have f'(x) = 2x * e^(x^2).

Now, we evaluate f'(0). Plugging x = 0 into f'(x), we get f'(0) = 2(0) * e^(0^2) = 0.

Finlly, we find f''(x). Taking the derivative of f'(x) = 2x * e^(x^2) with respect to x, we have f''(x) = 2 * e^(x^2) + 4x^2 * e^(x^2).

Evaluating f''(0), we get f''(0) = 2 * e^(0^2) + 4(0)^2 * e^(0^2) = 2.

Now, we have all the values needed to construct T2(x):

T2(x) = 1 + 0(x - 0) + 2(x - 0)^2/2! = 1 + x^2.

Therefore, the second Taylor polynomial T2(x) for f(x) = e^(x^2) based at b = 0 is T2(x) = 1 + x^2.

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The exact value of tan(θ) is 15/8

The trigonometric functions are real functions which relate an angle of a right-angled triangle to ratios of two side lengths.

tan(θ) = opp/adj

sin(θ) = opp/hyp

cos(θ) = adj/hyp

since tan(θ) = opp/adj

and the opp is unknown we have to calculate the opposite side by using Pythagorean theorem

opp = √ 17² - 8²

opp = √289 - 64

opp = √225

opp = 15

Therefore the value

tan(θ) = 15/8

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The equations of the planes is 6x -5y -15z = 30.

As given,

The tetrahedron with one vertex at the origin and the other vertices at (5,0,0), (0.-6,0), and (0.0.2).

Ten equations of the plane is

[tex]\left[\begin{array}{ccc}x-5&y-0&z-0\\0-5&-6-0&0-0\\0-5&0-0&0-2\end{array}\right]=0[/tex]

Simiplify values,

[tex]\left[\begin{array}{ccc}x-5&y&z\\-5&-6&0\\-5&0&-2\end{array}\right]=0[/tex]

[tex](x-5)\left[\begin{array}{cc}-6&0\\0&-2\end{array}\right] -y\left[\begin{array}{cc}-5&0\\-5&-2\end{array}\right]+z\left[\begin{array}{cc}-5&-6\\-5&0\end{array}\right]=0[/tex]

(x - 5) (12) - y (-10) + z (-20) = 0

12x - 60 - 10y -30z = 0

(x/5) - (y/6) + (-z/2) = 0

(x/5) - (y/6) - (z/2) = 0

Simplify values,

6x - 5y - 15z = 0

Hence, the equation of the plane is 6x -5y -15z = 30.

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Consequently, it may be said that that "Alternating Series test cannot be used because b_n = 2" is untrue.

We can in fact use the Alternating Series Test to assess whether the provided alternating series (sum_n=1infty (-1)n frac23n + 2) is converging.

According to the Alternating Series Test, if a series satisfies both of the following requirements: (1) a_n is positive and decreases as n rises; and (2) lim_ntoinfty a_n = 0, the series converges.

In this instance, (a_n = frac2 3n + 2)). We can see that "(a_n)" is positive for all "(n"), and that "(frac23n + 2)" lowers as "(n") grows. In addition, (frac 2 3n + 2) gets closer to 0 as (n) approaches infinity.

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To find the absolute maximum and absolute minimum values of the function f(x) on the given interval [0, 12], we need to evaluate the function at the critical points and endpoints of the interval.

First, we find the critical points by taking the derivative of f(x) and setting it equal to zero:

f'(x) = -1 + 16 = 0

Solving for x, we get x = 15.

Next, we evaluate the function at the critical point and endpoints:

f(0) = -16

f(12) = -12 + 16 = 4

f(15) = -15 + 16 = 1

Therefore, the absolute minimum value of f(x) is -16, which occurs at x = 0, and the absolute maximum value is 4, which occurs at x = 12.

In summary, the absolute minimum value of f(x) on the interval [0, 12] is -16, and the absolute maximum value is 4.

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1a. The number of black ink cartridges is 54

1b. The number of colored ink cartridges is 0.

1a. The number of black ink cartridges sold can be calculated by dividing the total cost of black ink cartridges by the cost of a single black ink cartridge.

Total cost of black ink cartridges = $1089.45

Cost of a single black ink cartridge = $19.99

Number of black ink cartridges sold = Total cost of black ink cartridges / Cost of a single black ink cartridge

                                    = $1089.45 / $19.99

                                    ≈ 54.48

Since we cannot have a fraction of a cartridge, we round down to the nearest whole number. Therefore, approximately 54 black ink cartridges were sold.

1b. To determine the number of colored ink cartridges sold, we can subtract the number of black ink cartridges sold from the total number of cartridges sold.

Total number of cartridges sold = 54

Number of colored ink cartridges sold = Total number of cartridges sold - Number of black ink cartridges sold

                                       = 54 - 54

                                       = 0

From the given information, it appears that no colored ink cartridges were sold during the fall semester. Only black ink cartridges were purchased.

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To find the critical values of the function f(x) = (x²-16)6, we need to determine where the derivative of the function is equal to zero or undefined.

First, let's find the derivative of f(x) with respect to x:

f'(x) = 6(x²-16)' = 6(2x) = 12x

Now, to find the critical values, we set the derivative equal to zero and solve for x:

12x = 0

Solving this equation, we find that x = 0.

So, the critical value of f is x = 0.

Therefore, the only critical value of f(x) = (x²-16)6 is x = 0.

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To compute the limit as x approaches 0 of cos(4x) - 1, the standard limit properties and trigonometric identities is used without using l'Hôpital's Rule.

Let's evaluate the limit using basic properties of limits and trigonometric identities. As x approaches 0, we have:

lim(x→0) cos(4x) -

Using the identity cos(0) = 1, we can rewrite the expression as:

lim(x→0) cos(4x) - cos(0)

Next, we can use the trigonometric identity for the difference of cosines:

cos(A) - cos(B) = -2sin((A + B)/2)sin((A - B)/2)

Applying this identity, we can rewrite the expression as

lim(x→0) -2sin((4x + 0)/2)sin((4x - 0)/2)

Simplifying further, we get:

lim(x→0) -2sin(2x)sin(2x)

Since the sine function is well-known to have a limit of 1 as x approaches 0, we can simplify the expression to:

lim(x→0) -2(1)(1) = -2

Therefore, the limit of cos(4x) - 1 as x approaches 0 is equal to -2.

Note: In this calculation, we did not utilize l'Hôpital's Rule, as it is not necessary for evaluating the given limit. By using trigonometric identities and the basic properties of limits, we were able to simplify the expression and determine the limit directly.

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The function f(x) is discontinuous at x = 0 and the discontinuity is not removable. The function is continuous everywhere else.

The function f(x) is said to be discontinuous at a point x = a if one or more of the following conditions are met:

1. The limit of f(x) as x approaches a does not exist.

2. The limit exists but is not equal to f(a).

3. The function has a jump discontinuity at x = a, meaning there is a finite gap in the graph of the function.

In this case, the function f(x) is defined as follows:

f(x) =

70, if x = 0

x, if x ≠ 0

At x = 0, the limit of f(x) as x approaches 0 is not equal to f(0). The limit of f(x) as x approaches 0 from the left side is 0, while the limit as x approaches 0 from the right side is 0. However, f(0) is defined as 70, which is different from both limits.

The notion of limit is closely related to continuity. A function is continuous at a point x = a if the limit of the function as x approaches a exists and is equal to the value of the function at a. In other words, the function has no sudden jumps, holes, or breaks at that point. Continuity implies that the graph of the function can be drawn without lifting the pen from the paper. Discontinuity, on the other hand, indicates a point where the function fails to meet the conditions of continuity.

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a) The point O P(1,0) lies on the unit circle.

b) The point ° 0(23, -2) does not lie on the unit circle.

c) The information for point c) is missing.



a) The point O P(1,0) lies on the unit circle because its coordinates satisfy the equation x^2 + y^2 = 1. Plugging in the values, we have 1^2 + 0^2 = 1, which confirms that it lies on the unit circle.

b) The point ° 0(23, -2) does not lie on the unit circle because its coordinates do not satisfy the equation x^2 + y^2 = 1. Substituting the values, we get 23^2 + (-2)^2 = 529 + 4 = 533, which is not equal to 1. Therefore, this point does not lie on the unit circle.

c) Unfortunately, the information for point c) is missing. Without the coordinates or any further details, it is impossible to determine whether point c) lies on the unit circle or not.

In summary, point a) O P(1,0) lies on the unit circle, while point b) ° 0(23, -2) does not lie on the unit circle. The information for point c) is insufficient to determine its position on the unit circle.

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The cost function C(x) is 3x + 5250, and the simplified profit function P(x) is -0.4x^2 + 357x - 5250.

Since the first letter of your last name is not provided, let's assume it is "M" for the purpose of this example.

Given that the fixed cost, h, falls in the range of $5,001 to $5,500, let's choose a value of $5,250 for h.

The cost function, C(x), is given as C(x) = 3x + h, where x is the number of app downloads and h is the fixed cost. Substituting the value of h = $5,250, we have:

C(x) = 3x + 5250

The profit function, P(x), can be calculated by subtracting the cost function C(x) from the revenue function R(x). The revenue function is given as R(x) = -0.4x^2 + 360x. Therefore, we have:

P(x) = R(x) - C(x)

= (-0.4x^2 + 360x) - (3x + 5250)

= -0.4x^2 + 360x - 3x - 5250

= -0.4x^2 + 357x - 5250

So, the cost function C(x) is 3x + 5250, and the simplified profit function P(x) is -0.4x^2 + 357x - 5250.

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Answer:

The given matrix equation can be written as:

[2 3; 2 1] * [x; y] = [20; 8]

Multiplying the matrices on the left side of the equation gives us the system of equations:

2x + 3y = 20 2x + y = 8

To solve for x and y using matrices, we can use the inverse matrix method. First, we need to find the inverse of the coefficient matrix [2 3; 2 1]. The inverse of a 2x2 matrix [a b; c d] can be calculated using the formula: (1/(ad-bc)) * [d -b; -c a].

Let’s apply this formula to our coefficient matrix:

The determinant of [2 3; 2 1] is (21) - (32) = -4. Since the determinant is not equal to zero, the inverse of the matrix exists and can be calculated as:

(1/(-4)) * [1 -3; -2 2] = [-1/4 3/4; 1/2 -1/2]

Now we can use this inverse matrix to solve for x and y. Multiplying both sides of our matrix equation by the inverse matrix gives us:

[-1/4 3/4; 1/2 -1/2] * [2x + 3y; 2x + y] = [-1/4 3/4; 1/2 -1/2] * [20; 8]

Solving this equation gives us:

[x; y] = [0; 20/3]

So, a t-shirt costs $0 and a notebook costs $20/3.

The correct answer is D) a(t) = 9t to the problem if s is a distance given by s(t) = 313+t+ 4.

To find the acceleration, we need to take the second derivative of the distance function s(t) = 313 + t + 4 with respect to time t.

Given: s(t) = 313 + t + 4

First, let's find the first derivative of s(t) with respect to t:

s'(t) = d(s(t))/dt = d(313 + t + 4)/dt

= d(t + 317)/dt

= 1

The first derivative gives us the velocity function v(t) = s'(t) = 1.

Now, let's find the second derivative of s(t) with respect to t:

a(t) = d²(s(t))/dt² = d²(1)/dt²

= 0

The second derivative of the distance function s(t) is zero, indicating that the acceleration is constant and equal to zero. Therefore, the correct answer is D) a(t) = 9t.

This means that the object described by the distance function s(t) = 313 + t + 4 is not accelerating. Its velocity remains constant at 1, and there is no change in acceleration over time.

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The polar coordinate (9,0°) can be converted to Cartesian coordinates as (9,0) using the formulas x = r cos θ and y = r sin θ.

To convert the given polar coordinate (9,0°) to Cartesian coordinates, we need to use the following formulas:

x = r cos θ y = r sin θ

Where, r is the radius and θ is the angle in degrees. In this case, r = 9 and θ = 0°. Therefore, using the formulas above, we get:

x = 9 cos 0°y = 9 sin 0°

Now, the cosine of 0° is 1 and the sine of 0° is 0. Substituting these values, we get:

x = 9 × 1 = 9y = 9 × 0 = 0

Therefore, the Cartesian coordinates of the given polar coordinate (9,0°) are (9,0).

We can also represent the point (9,0) graphically as shown below:

In summary, the polar coordinate (9,0°) can be converted to Cartesian coordinates as (9,0) using the formulas x = r cos θ and y = r sin θ.

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The total distance the ball travels is the sum of the distances it travels while falling and while bouncing. The ball travels a total distance of 45 feet.

When the ball is dropped from a height of 15 feet, it falls and covers a distance of 15 feet. After hitting the ground, it bounces back to a height that is 80% of the height from which it last fell, which is 80% of 15 feet, or 12 feet. The ball then falls from a height of 12 feet, covering an additional distance of 12 feet. This process continues until the ball stops bouncing.

To calculate the total distance the ball travels, we can sum up the distances traveled during each fall and each bounce. The distances traveled during each fall form a geometric sequence with a common ratio of 1, since the ball falls from the same height each time. The sum of this geometric sequence can be calculated using the formula for the sum of an infinite geometric series:

Sum = a / (1 - r),

where "a" is the first term of the sequence and "r" is the common ratio. In this case, "a" is 15 feet and "r" is 1.

Sum = 15 / (1 - 1) = 15 / 0 = undefined.

Since the sum of an infinite geometric series with a common ratio of 1 is undefined, the ball does not travel an infinite distance. Instead, we know that after each bounce, the ball falls and covers a distance equal to the height from which it last fell. Therefore, the total distance the ball travels is the sum of the distances traveled during the falls. The total distance is 15 + 12 + 12 + ... = 15 + 15 + 15 + ... = 45 feet.

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The ratio of students who secured grades A,B,C and D​ is 9 : 15 : 4 : 2

From the question, we have the following parameters that can be used in our computation:

Students = 60

A = 18

B = 30

C = 8

D = 4

When represented as a ratio, we have

Ratio = A : B : C : D

substitute the known values in the above equation, so, we have the following representation

A : B : C : D = 18 : 30 : 8 : 4

Simplify

A : B : C : D = 9 : 15 : 4 : 2

Hence, the ratio of students who secured grade A,B,C and D​ is 9 : 15 : 4 : 2

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The balanced equation of the chemical reaction is  3K₂S + 2AlCl₃ → 6KCl + Al₂S₃ .

The balanced equation of the chemical reaction is calculated as follows;

The given chemical equation;

K₂S+ AlCl₃ → KCl + Al₂S₃

The balanced chemical equation is obtained by adding coefficient to each of the molecule in order to balance the number of atoms on the right and on the left.

The balanced equation of the chemical reaction becomes;

3K₂S + 2AlCl₃ → 6KCl + Al₂S₃

In the equation above we can see that;

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