Suppose that you are gambling at a casino. Every day you play at a slot machine, and your goal is to minimize your losses. We model this as the experts problem. Every day you must take the advice of one of n experts (i. E. A slot machine). At the end of each day t, if you take advice from expert i, the advice costs you some c t i in [0, 1]. You want to minimize the regret R, defined as:

The evaluated probability that there have been 2 occurrences in ten minutes  is 0.0842, under the condition that the mean number of occurrences in ten minutes is 5.

Here we have to apply  the Poisson distribution formula. The formula is
[tex]P(X = k) = (e^{-g} * g^k) / k!,[/tex]
Here
X = number of occurrences,
k = number of occurrences we want to find the probability for,
e = Number of Euler's
g = mean number of occurrences in ten minutes.

For the given case, g = 5 since
Therefore,
P(X = 2) = (e⁻⁵ × 5²) / 2!
≈ 0.0842.

Hence,  after careful consideration the  evaluated probability that there are 2 occurrences in ten minutes is  0.0842.

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It is a fifth order polynomial

The constant term is -7

The leading term is [tex]x^5/7[/tex]

The coefficient of the leading term is [tex]1/7[/tex]

The term with the highest degree—i.e., the term with the largest power of the variable—is the leading term. The leading coefficient is the leading term's coefficient.

We frequently rearrange polynomials so that the powers are descending or ascending because of the definition of the "leading" term. We can see that the leading term in the expression here is [tex]x^5/7[/tex].

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Answer:

The volume is the height times the length times the width (order does not matter in this case).

4.5 x 3.5 x 7= 110.25

The volume of this block of wood is 110 cubic inches.

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Step-by-step explanation:

I have gotten 113

Step-by-step explanation:

The right angle triangle has three angles and the value of its two angles are 90°and30°.We need to find the third angle which is the sum of 90°and 30°subtract from 180°=60°.60° is vertically opposite to angle C. We'll be having a quadrilateral whose angles add up to 360° .Subtract the sum of the three angles from 360° and you'll get 113°

Answer:  640

Step-by-step explanation:

We find that the maximum possible number of animals is 37, with 17 white mice and 20 rabbits.

Let's use the following variables:

x be the number of white mice

Let y be the number of rabbits

Based on the given information, we can create the following system of linear inequalities:

10x + 12y ≤ 420 (maximum time available in environment I)

25x + 15y ≤ 600 (maximum time available in environment II)

We also have the constraints that x and y must be non-negative integers.

To solve this problem, we can use a graphing approach. We can graph each inequality on the same coordinate plane and shade the region that satisfies all the constraints. The feasible region will be the region that is shaded.

However, since x and y must be integers, we need to find the corner points of the feasible region and test each one to see which one gives us the maximum value of x + y.

To find the corner points, we can solve each inequality for one variable and then substitute into the other inequality:

For the first inequality: 12y ≤ 420 - 10x, so y ≤ (420 - 10x)/12

For the second inequality: 15y ≤ 600 - 25x, so y ≤ (600 - 25x)/15

Since y must be a non-negative integer, we can use the floor function to round down to the nearest integer:

For the first inequality: y ≤ ⌊(420 - 10x)/12⌋

For the second inequality: y ≤ ⌊(600 - 25x)/15⌋

We can then plot these two expressions on the same graph and find the points where they intersect. We can then test each point to see if it satisfies all the constraints and if it gives us the maximum value of x + y.

After doing all the calculations, we find that the maximum possible number of animals is 37, with 17 white mice and 20 rabbits.

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The value of y is 50, and the perimeter of triangle ABC is approximately 49.3 units.

To find the value of y in the coordinate of vertex B, we can use the formula for the area of a triangle given the coordinates of its vertices:

Area =[tex]\frac{ 1}{2}[/tex] * |(x1(y2-y3) + x2(y3-y1) + x3(y1-y2))|

Let's substitute the given values into the formula:

12 = [tex]\frac{ 1}{2}[/tex]* |(3(y-6) + 8(6-1) + 4(1-y))|

Simplifying the equation:

24 = |(3y - 18 + 40 + 4 - 4y)|

24 = |(-y + 26)|

Now, we can solve the equation by considering both the positive and negative values of the absolute expression:

-y + 26 = 24

-y = -2

y = 2

-y + 26 = -24

-y = -50

y = 50

So we have two possible values for y: y = 2 or y = 50.

To determine the correct value for y, we need to analyze the given information further. Since we know that triangle ABC is not an isosceles triangle (as the base lengths differ), we can eliminate the possibility of y = 2, leaving us with y = 50.

Now, let's calculate the perimeter of triangle ABC using the coordinates of its vertices:

AB = [tex]\sqrt((8 - 3)^2 + (y - 1)^2)[/tex]

BC = [tex]\sqrt((4 - 8)^2 + (6 - y)^2)[/tex]

CA = [tex]\sqrt((3 - 4)^2 + (1 - 6)^2)[/tex]

Perimeter = AB + BC + CA

Substituting the known values:

Perimeter = [tex]\sqrt((8 - 3)^2 + (50 - 1)^2) + \sqrt((4 - 8)^2 + (6 - 50)^2) + \sqrt((3 - 4)^2 + (1 - 6)^2)[/tex]

Calculating each term:

Perimeter = [tex]\sqrt(25 + 2401) + \sqrt(16 + 2025) + \sqrt(1 + 25)[/tex]

Perimeter = [tex]\sqrt(2426) + \sqrt(2041) + \sqrt(26)[/tex]

Rounding the perimeter to the nearest tenth of a unit:

Perimeter ≈ 49.3 units

Therefore, the value of y is 50, and the perimeter of triangle ABC is approximately 49.3 units.

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Answer:

Step-by-step explanation:

Two lines are perpendicular to each other if their slopes are negative reciprocals of each other. So,  The equations i and ii are perpendicular to each other since their slopes are negative reciprocals of each other.

In other words, if the slope of one line is m, then the slope of the other line is -1/m.

To determine the slope of each equation, we can rewrite each equation in slope-intercept form, y = mx + b, where m is the slope and b is the

y-intercept.

i. 3x - 2y = 12

-2y = -3x + 12

y = (3/2)x - 6

The slope of this line is 3/2.

ii. 3x + 2y = -12

2y = -3x - 12

y = (-3/2)x - 6

The slope of this line is -3/2.

iii. 2x - 3y = -12

-3y = -2x - 12

y = (2/3)x + 4

The slope of this line is 2/3.

Therefore, equations i and ii are perpendicular to each other since their slopes are negative reciprocals of each other. Equation iii is not perpendicular to either of the other two equations.

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The estimate increase for $120 by 160% is 192. The calculated increase for $120 by 160% is 192.

Percent is a way of expressing a number as a fraction of 100. The word "percent" comes from the Latin phrase "per centum", which means "per hundred". Percentages are often used to describe a part of a whole.  Percentages are used in many areas of life, such as finance, business, and statistics. They are used to calculate interest rates, taxes, discounts, and many other important figures.

Here,

Estimate: To estimate 160% of 120, we can first find 10% of 120, which is 12. Then, we can find 100% of 120 by multiplying 12 by 10, which is 120. Finally, we can add 60% of 120, which is 72 (since 60% is 6 times 10%), to get an estimate of 192.

Calculate: To calculate 160% of 120, we can first convert the percentage to a decimal by dividing it by 100, which gives us 1.6. Then, we can multiply 120 by 1.6 to get:

120 x 1.6 = 192

So the total increase is 192.

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The powerset of M can be written as P(M) = {(1, 2), (1, 4), (2, 1), (2, 4), (2, 4, 1), (1, 4), (4, 2}, {}}.

Given that, M = {x: x² - 5x + 2x + 8 = 0}

This is a quadratic equation and it can be written in the form of (x - a)(x - b) = 0, where a and b are the roots of the equation.

Substituting x² - 5x + 2x + 8 = 0 in (x - a)(x - b) = 0, we get

(x - a)(x - b) = (x - (-3))(x - 5) = 0

Therefore, the roots of the equation are a = –3 and b = 5.

Now, the powerset of M can be written as P(M) = {(1, 2), (1, 4), (2, 1), (2, 4), (2, 4, 1), (1, 4), (4, 2}, {}}.

Here,

(1, 2) represents the set containing only the root ‘–3’,

(2, 1) represents the set containing only the root ‘5’,

(2, 4) represents the set containing both the roots

Therefore, the powerset of M can be written as P(M) = {(1, 2), (1, 4), (2, 1), (2, 4), (2, 4, 1), (1, 4), (4, 2}, {}}.

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A general formula that gives all the times when the voltage will be 0 is t = ±√((pπ)/10)

To find the general formula for the times when the voltage will be 0, we need to analyze the given equation: V(t) = 12sin(5t²). Since V(t) represents the voltage at time t, we want to find the values of t for which V(t) = 0. This will occur when the sine function equals 0.

The sine function, sin(x), is equal to 0 when its argument x is a multiple of π. Mathematically, this can be expressed as:

sin(x) = 0 ⟺ x = nπ, where n is an integer (0, ±1, ±2, ...)

In our case, the argument of the sine function is 5t². Thus, we want to find values of t for which:

5t² = nπ, where n is an integer.

Now, let's solve this equation for t:

t² = (nπ)/5

t = ±√((nπ)/5)

Since the question asks for a formula in terms of p, let's define p as an integer such that p = 2n (n can be any integer). Thus, the formula becomes:

t = ±√((pπ)/10)

This formula represents the general sequence of times t (in milliseconds) when the voltage V(t) will be equal to 0. Here, p is an even integer (0, ±2, ±4, ...) representing different instances when the voltage is zero.

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In a case whereby A bike wheel is 26 inches in diameter  the bike wheel's diameter in millimeters (1 inch = 25.4 millimeters) the  the diameter is  660.4mm

Note; the bike man do not make any calculation, so we can not know mat be he make any mistake.

Since the bike wheel is 26 inches in diameter then we can calculate the diameter of the bike wheel  through the multiplication of the two numbers.

Diameter in milimeters = ( 26.0 x 25.4)

Diameter in milimeters =  660.4 mm.

Hence diameter of the bike wheel in millimeters will be 660.4.

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The marginal revenue at 1000 units is 40, at 3000 units is 0, and at 6000 units is -60.

Find the marginal revenue?

To find the marginal revenue for the given production levels, we first need to solve the demand equation for p and then derive the revenue function R(q).

Solve the demand equation for p.
q = 6000 - 100p
100p = 6000 - q
p = (6000 - q) / 100

Find the revenue function R(q) using R(q) = qp.
R(q) = q * ((6000 - q) / 100)

Derive the marginal revenue function MR(q) by taking the derivative of R(q) with respect to q.
MR(q) = dR(q)/dq = d(q * (6000 - q) / 100)/dq

Using the product rule:
MR(q) = (1 * (6000 - q) - q * 1) / 100
MR(q) = (6000 - 2q) / 100

Now, we can plug in the given production levels to find the marginal revenue at each level.

The marginal revenue at 1000 units is:
MR(1000) = (6000 - 2 * 1000) / 100 = (6000 - 2000) / 100 = 4000 / 100 = 40.

The marginal revenue at 3000 units is:
MR(3000) = (6000 - 2 * 3000) / 100 = (6000 - 6000) / 100 = 0 / 100 = 0.

The marginal revenue at 6000 units is:
MR(6000) = (6000 - 2 * 6000) / 100 = (6000 - 12000) / 100 = -6000 / 100 = -60.

So, the marginal revenue at 1000 units is 40, at 3000 units is 0, and at 6000 units is -60.

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Over (-∞, 0) interval is Store A's profit greater than Store B's.

To determine the interval over which Store A's profit is greater than Store B's, we need to solve the inequality:

f(x) > g(x)

Substituting the given profit functions, we have:

2x > 83x

Simplifying this inequality, we can subtract 83x from both sides:

-81x > 0

Dividing both sides by -81 (and reversing the inequality because we are dividing by a negative number), we get:

x < 0

Therefore, Store A's profit is greater than Store B's for all values of x less than 0. In interval notation, we can write:

(-∞, 0)

So the interval over which Store A's profit is greater than Store B's is the open interval from negative infinity to 0.

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The unit rate in teaspoons per cup is 2 teaspoons per cup

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

Using the above as a guide, we have the following:

Unit rate = teaspoons/Recipe

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

Unit rate = (4/3)/(2/3)

Evaluate

Unit rate = 2

Hence, the unit rate is 2

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The solution to the integral is ∫ dx/|x|*√4x²-16 is ∫ dx/|x|*√(4x²-16) = 2 ln|sin(θ)| + CC

We can then rewrite the integral in terms of u as:

∫ dx/|x|*√(4x²-16) = ∫ du/|u|*√(u²-16)

Next, we can use another substitution of the form u = 4sec(θ), which will transform the integrand into: 2/(|sec(θ)|*√(sec²(θ)-1)) dθ

Using the identity sec²(θ)-1=tan²(θ), we can simplify the integrand to:

2/(|sec(θ)|sqrt(sec²(θ)-1)) = 2/(|sec(θ)||tan(θ)|)

We can then split the integral into two parts, corresponding to the two possible signs of sec(θ):

∫ du/|u|*√(u²-16) = 2 ∫ dθ/(sec(θ)tan(θ))

= 2 [ ∫ dθ/(sec(θ)tan(θ)), for sec(θ)>0

∫ dθ/(-sec(θ)tan(θ)), for sec(θ)<0 ]

The integral ∫ dθ/(sec(θ)tan(θ)) can be solved using the substitution u = sin(θ), which gives:

∫ dθ/(sec(θ)tan(θ)) = ∫ du/u = ln|u| + C = ln|sin(θ)| + C

Therefore, the indefinite integral is:

∫ dx/|x|*√(4x²-16) = 2 ln|sin(θ)| + C

where θ satisfies the equation 4sec(θ) = 2x.

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Answer:

1)3 pm

Step-by-step explanation:

1st) so till 12 15 he will have checked 3 patients and after the break the other two, I think he will finish at 3 pm

This function is not differentiable at all points in [tex]R^2[/tex]. To see this, consider the points on the x-axis, where y = 0. At these points, the function is not differentiable because it has a sharp corner.

To show that the function f(x, y) = |y| is differentiable at (0, 0), we need to show that there exists a linear transformation L such that:

[tex]lim (h,k) - > (0,0) [f(0+h,0+k) - f(0,0) - L(h,k)] / \sqrt{(h^2 + k^2)} = 0[/tex]

where f(0,0) = 0 since |0| = 0.

We have:

f(0+h,0+k) - f(0,0) = |k|

Now we need to find L(h,k), which is a linear transformation of (h,k) that approximates f(0+h,0+k) - f(0,0) near (0,0). We can take:

L(h,k) = 0

Since L is a constant function, it is a linear transformation. Also, we have:

f(0+h,0+k) - f(0,0) - L(h,k) = |k|

So we have:

[tex]lim (h,k) - > (0,0) [f(0+h,0+k) - f(0,0) - L(h,k)] / \sqrt{(h^2 + k^2) } = lim (h,k) - > (0,0) |k| / \sqrt{(h^2 + k^2)}[/tex]

Using the squeeze theorem, we can show that this limit is equal to 0, since[tex]|k| < = \sqrt{(h^2 + k^2)}[/tex] for all (h,k) and[tex]lim (h,k) - > (0,0)\sqrt{ (h^2 + k^2) } = 0.[/tex]

Therefore, f(x, y) = |y| is differentiable at (0,0).

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Using circle theorems  the angles in triangle ΔABM are

Circle theorems are theorems that govern circle peoperties

To find the angles in triangle ABM, we notice that in ΔABO, since OB = OA (radius of the circle), then ΔABO is an isoceles triangle.

So, ∠OAB = ∠ABO  (Base angles of an isoceles triangle)

Now, ∠OAB = ∠ABO = ∠A = 30°

Also ∠OAB + ∠ABO = ∠BOM (sum of opposite interior angles)

30° +  30° = ∠BOM

∠BOM = 60°

Now since OB is the radius and touches MV at B, and thus perpendicular to it. so, ∠OBM = 90°

Now, ∠OAB + ∠OBM = ∠ABM

30° + 90° = ∠ABM

∠ABM = 120°

Now in triangle ΔABM

∠BAM + ∠ABM + ∠BMA = 180° (sum of angles in a triangle)

Now

So, making ∠BMA subject of the formula, we have that

∠BMA = 180° - ∠BAM + ∠ABM

So, substituting the values of the variables into the equation, we have that

∠BMA = 180° - ∠BAM + ∠ABM

∠BMA = 180° - 30° - 120°

∠BMA = 180° - 150°

∠BMA = 30°

So, the angles are

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The trinomial can now be represented by the square of the binomial (0.123 + 10c)²

To insert a monomial so that the trinomial may be represented by the square of a binomial, consider the trinomial 0.0152 + ... + 100c².

1: Identify the square root of the first and last terms, which are √0.0152 and √100c². The square roots are 0.123 and 10c, respectively.

2: Determine the middle term by multiplying the square roots together and doubling the result. (0.123)(10c)(2) = 2.46c.

3: Insert the middle term into the trinomial, forming the complete trinomial: 0.0152 + 2.46c + 100c².

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Answer:

Sure, I can help you with that! The volume of a cone with a radius of 2.5 and a height of 4 is (1/3)*pi*(2.5^2)*4. This equals approximately 26.18 cubic units.

It appears that the relationship between the number of registered pleasure boats and manatee deaths fluctuates over the years. While there is no clear trend, it is important to consider the possible effects of increased boat registration on manatee populations.

The table you provided shows the number of registered pleasure boats (in tens of thousands) and the number of manatee deaths caused by boats in Florida from 1991 to 2014.

When the number of registered pleasure boats increases, there could be a higher likelihood of boat-related manatee deaths. As more boats are present in the water, manatees may face increased risks from boat strikes, which can lead to injuries or fatalities. Additionally, more boats may lead to habitat destruction, indirectly affecting manatee populations.

It is crucial for boat owners to follow safe boating practices to protect manatees and their habitats. Some measures to reduce manatee deaths include obeying speed limits in designated manatee zones, wearing polarized sunglasses to increase visibility, and being cautious in shallow areas where manatees might be feeding or resting.

In conclusion, the relationship between the number of registered pleasure boats and manatee deaths in Florida is complex and fluctuating. However, it is essential for boat owners to be aware of the potential risks and take necessary precautions to protect these gentle marine mammals.

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The slope of the line of best fit for data set B is -1.495, which is closest to the slope of the line of best fit for data set A (-1.5).

When k = 4:

Σ(x) = 39, Σ(y) = 61, Σ(xy) = 566, Σ(x²) = 316

n = 10

d = (Σ(xy) - (Σx)(Σy) / n) / (Σ(x²) - (Σx)² / n) = (566 - (39)(61) / 10) / (316 - (39)² / 10) = -1.495

When k = 5:

Σ(x) = 40, Σ(y) = 65, Σ(xy) = 610, Σ(x²) = 337

n = 10

d = (Σ(xy) - (Σx)(Σy) / n) / (Σ(x²) - (Σx)² / n) = (610 - (40)(65) / 10) / (337 - (40)² / 10) = -1.481

Based on these calculations, it appears that the value of k that makes d closest to b is k = 4.

At k = 4, the slope of the line of best fit for data set B is -1.495, which is closest to the slope of the line of best fit for data set A (-1.5).

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We conclude that the data are consistent with Mendel's prediction of a 3:1 ratio of smooth to wrinkled peas.

To carry out a chi-square goodness-of-fit test, we need to calculate the expected number of smooth and wrinkled peas based on Mendel's prediction of a 3:1 ratio.

The total number of peas observed in the experiment is:n = 423 + 133 = 556The expected number of smooth peas is 3/4 of the total number of peas, and the expected number of wrinkled peas is 1/4 of the total number of peas.

Therefore, we have: Expected number of smooth peas = 3/4 × 556 = 417Expected number of wrinkled peas = 1/4 × 556 = 139

We can now calculate the chi-square statistic as follows:chi-square = Σ[(observed - expected)² / expected]where the sum is taken over the two categories (smooth and wrinkled).

For the observed values of 423 smooth and 133 wrinkled peas, we have: chi-square = [(423 - 417)^2 / 417] + [(133 - 139)^2 / 139]= 0.84 + 0.84= 1.68

The degrees of freedom for this test are (number of categories - 1), which is 2 - 1 = 1.

Using a significance level of 0.05 and a chi-square distribution table with 1 degree of freedom, we find that the critical value of chi-square is 3.84.

Since our calculated chi-square value of 1.68 is less than the critical value of 3.84, we fail to reject the null hypothesis that the observed frequencies do not differ significantly from the expected frequencies based on Mendel's prediction.

Therefore, we conclude that the data are consistent with Mendel's prediction of a 3:1 ratio of smooth to wrinkled peas.

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Maximum Height of the ball: 6.25 units

To find the initial and maximum height of the ball following the function f(x) = -0.25(x-3)^2 + 6.25, we need to evaluate the function at the initial position and find the vertex of the parabola.

Initial height:
When the ball is initially thrown, it's at position x=0. Plug this value into the function:

f(0) = -0.25(0-3)^2 + 6.25
f(0) = -0.25(-3)^2 + 6.25
f(0) = -0.25(9) + 6.25
f(0) = -2.25 + 6.25
f(0) = 4

The initial height of the ball is 4 units.

Maximum height:
The maximum height corresponds to the vertex of the parabola. Since the function is in the form f(x) = a(x-h)^2 + k, the vertex is at the point (h, k). In our case, h = 3 and k = 6.25.

The maximum height of the ball is 6.25 units.

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For the piecewise-defined function, f(-4) = 42.

The given function is a piecewise-defined function, which means that it is defined differently depending on the value of x. In this case, we have two different formulas for the function depending on whether x is less than or greater than 3. For values of x less than 3, the function is given by f(x) = 22 - 5x, while for values of x greater than 3, the function is given by f(x) = 2x + 5.

To find f(-4), we need to determine which part of the function applies to the value of x = -4. Since -4 is less than 3, we use the first part of the function, which gives us f(-4) = 22 - 5(-4) = 22 + 20 = 42. This means that if x is equal to -4, the function f(x) evaluates to 42.

Piecewise-defined functions can be useful in modeling real-world problems where the relationship between variables changes depending on certain conditions or constraints. By defining the function differently depending on the value of x, we can more accurately capture the behavior of the system being modeled.

In this case, the function could be used to model a situation where the value of a variable has different relationships to other variables depending on whether it is less than or greater than a certain threshold value.

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Step-by-step explanation:

y = 3x^4 + 8x/(2x)=

y = 3x^4 + 4       then

dy/dx = 12 x^3        and this = 882

12 x^3 = 882

x^3 = 73.5

x =  4.1889

The contribution margin for braised greens is $2.68.

The contribution margin is a financial metric that helps businesses determine the profitability of a product or service. It represents the amount of revenue that is left over after deducting the variable costs of producing that product or service.

In this case, the ingredients for the braised greens cost $1.32, and the selling price is $4, so the contribution margin would be $2.68 ($4 - $1.32 = $2.68).

This means that for every sale of the braised greens, the business earns $2.68 towards covering fixed costs and generating profit. By calculating the contribution margin, businesses can determine the pricing strategy that is necessary to achieve their desired profit margins while remaining competitive in the market.

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The missing terms in the blanks  and number of terms  are determined below.

The missing terms in the blanks for the pattern and number of terms  can be determined as follows:

1. 32, 30, 28, 26, 32__________________________, 0

The difference is 2. Thus, subtract 2 till you reach 0. That is:

32, 30, 28, 26, 24, 22, 20, 18, 16, 14, 12, 10, 8, 6, 4, 2, 0

Number of terms: 16

2. 75, 70, 65, 60, 55, 50, ____________________, 0

The difference is 5. Thus, subtract 5 till you reach 0. That is:

75, 70, 65, 60, 55, 50, 45, 40, 35, 30, 25, 20, 15, 10, 5, 0

Number of terms: 15

3. 30, 27, 24, 21, ___________________________, 0

The difference is 3. Thus, subtract 3 till you reach 0. That is:

30, 27, 24, 21, 18, 15, 12, 9, 6, 3, 0

Number of terms: 10

4. 81, 72, 63, ______________________________, 0

The difference is 9. Thus, subtract 9 till you reach 0. That is:

81, 72, 63, 54, 45, 36, 27, 18, 9, 0

Number of terms: 9

5. 48, 44, 40, 36, __________________________, 0

The difference is 4. Thus, subtract 4 till you reach 0. That is:

48, 44, 40, 36, 32, 28, 24, 20, 16, 12, 8, 4, 0

Number of terms: 12

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Step-by-step explanation:

Pick any of the two points...I'll use the first two

calculate slope:     m  = ( y1-y2) / (x1-x2) =  (-14 - -5) / (-2 -1) = -9/-3 = 3

   equation of a line in slope intercept form is y = mx+ b

      so now you have    y = 3x + b  

             sub in any of the x,y  points given (8,16)  to calculate 'b'

                             16 = 3 (8) + b

                                  b = -8

so your first line is     y = 3x - 8

In a similar fashion, for the second one   m = - 5/8    and b = 2

           y = -5/8 x + 2