consider the parametric curve given by the equations x(t)=t2 3t 12 y(t)=t2 3t−22 how many units of distance are covered by the point p(t)=(x(t),y(t)) between t=0 and t=6 ?

Mama Mia makes $15 per pizza sold.

What is an equation?

An equation is a mathematical statement that shows that two expressions are equal. It consists of two sides separated by an equals sign (=). The expressions on both sides of the equation can contain numbers, variables, and mathematical operations such as addition, subtraction, multiplication, and division.

We can calculate the amount of money each pizzeria makes per pizza using the given equation for Mama Mia:

y = 15x

To calculate the amount of money per pizza, we need to divide the total amount of money y by the number of pizzas sold x:

money per pizza = y/x

For Mama Mia, we have:

money per pizza = y/x = 15x/x = 15

So Mama Mia makes $15 per pizza sold.

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the sum of the series, correct to three decimal places, is approximately 1.017correct to three decimal places. Hi! To find the sum of the series you provided, correct to three decimal places, we will use the following formula for the sum of a converging p-series:

Sum = ζ(p)

where ζ(p) is the Riemann zeta function and p is the exponent in the denominator (in this case, p = 6). The series is:

sum_(n=1)^infinity 7/n^6

To find the sum, we apply the Riemann zeta function:

Sum = 7 * ζ(6)

Using the known value of ζ(6) = π^6/945, we have:

Sum = 7 * (π^6/945)

Now, we can calculate the value of the sum up to three decimal places:

Sum ≈ 7 * (π^6/945) ≈ 1.017

So, the sum of the series, correct to three decimal places, is approximately 1.017.

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The length of the arc intercepted by a central angle of 5 radians in a circle with a radius of 16 inches is approximately 80 inches.

To find the length s of the arc intercepted by a central angle of 5 radians in a circle with a radius of 16 in, we use the formula:
s = rθ
where r is the radius of the circle and θ is the central angle in radians.

Plugging in the given values, we get:
s = 16 x 5 = 80
Therefore, the length of the arc intercepted by a central angle of 5 radians in a circle with a radius of 16 in is 80 inches.

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The general solution for the given higher-order linear ODE is:
y(x) = y_c(x) + y_p(x) = C1 * e^(2x) + C2 * x * e^(2x) + (1/2) * x^2 * e^(2x)

To solve the given higher-order linear ODE, we need to find a particular solution for the equation:
y'' - 4y' + 4y = e^(2x)

First, we find the complementary function (solution of the homogeneous equation) by solving the characteristic equation:

r^2 - 4r + 4 = 0

(r - 2)^2 = 0

The roots are r1 = r2 = 2. Therefore, the complementary function is:
y_c(x) = C1 * e^(2x) + C2 * x * e^(2x)

Next, we find a particular solution y_p(x) by using the method of undetermined coefficients. Since the right-hand side of the equation is e^(2x), we can assume a particular solution of the form:

y_p(x) = A * x^2 * e^(2x)

Taking the first and second derivatives of y_p(x):

y_p'(x) = A * (2x * e^(2x) + 4x^2 * e^(2x))

y_p''(x) = A * (2 * e^(2x) + 8x * e^(2x) + 8x^2 * e^(2x))

Now substitute y_p, y_p', and y_p'' back into the given ODE:

A*(2 * e^(2x) + 8x * e^(2x) + 8x^2 * e^(2x)) - 4A*(2x * e^(2x) + 4x^2 * e^(2x)) + 4A*x^2 * e^(2x) = e^(2x)

Simplify and cancel out the terms:

2A * e^(2x) = e^(2x)

A = 1/2

Now we have the particular solution:
y_p(x) = (1/2) * x^2 * e^(2x)

The general solution for the given higher-order linear ODE is:
y(x) = y_c(x) + y_p(x) = C1 * e^(2x) + C2 * x * e^(2x) + (1/2) * x^2 * e^(2x)

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The possible measure for the third side of the triangle is: 0 < c < 17.

The triangle inequality theorem states that the sum of the lengths of any two sides of a triangle must be greater than the length of the third side. In other words, if a, b, and c are the lengths of the sides of a triangle, then:

a + b > c

b + c > a

a + c > b.

In the given question,

To determine the possible measures of the third side of a triangle given two sides, we use the triangle inequality theorem, which states that the sum of any two sides of a triangle must be greater than the third side.

Let a and b be the given lengths of the sides, and c be the length of the unknown side. Then, we have:

a + b > c

8 + 9 > c

17 > c

and

b + c > a

9 + c > 8

c > -1

Therefore, the possible measures for the third side of the triangle are:

-1 < c < 17

Note that the length of a side of a triangle must be a positive number, so we can exclude the negative value from our solution. Hence, the possible measure for the third side is:

0 < c < 17

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The given equation is y = √(4 - [tex]x^2[/tex]), where y is the vertical axis and x is the horizontal axis. This equation represents the upper half of a circle with a radius of 2 centered at the origin.

To find the volume of the object created when this shape is rotated about the y-axis, we can use the method of cylindrical shells. The formula for the volume of a solid of revolution using cylindrical shells is:

V = 2π ∫[x * f(x)] dx, where x varies from 0 to the radius of the circle, which is 2.

Substituting the given equation for f(x) into the formula, we get:

V = 2π ∫[x * √(4 -[tex]x^2)[/tex]] dx, where x varies from 0 to 2.

Now we can integrate to find the volume:

V = 2π ∫[x * √(4 - [tex]x^2[/tex])] dx

= 2π [-√(4 - [tex]x^2[/tex])] + C, where C is the constant of integration

Now we can evaluate the definite integral from 0 to 2:

V = 2π [-√(4 -[tex]2^2[/tex] )] - 2π [-√(4 - [tex]0^2[/tex] )]

= 2π [-√0] - 2π [-√4]

= 2π * 0 - 2π * (-2)

= 4π

So, the volume of the object created when the area bounded by y = 0, x = 0, and y = √(4 - [tex]x^2[/tex]) is rotated about the y-axis is 4π cubic units.

The most nearly option to this volume is option A. 3.1.

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A unit vector has magnitude 1 and is obtained by dividing a non-zero vector by its magnitude. To find unit vector in the direction of u=(-8,-15), find its magnitude (17), divide u by its magnitude to get (-8/17, -15/17), and multiply it by -1 to get the unit vector in the opposite direction.

The unit vector acquired by normalizing the normal vector is the unit normal vector, also known as the “unit normal.”

Here, we divide a nonzero normal vector by its vector norm.To find a unit vector in the direction of u and in the direction opposite that of u, follow these steps:
Given vector u = (-8, -15). What is unit Vector: A vector is a quantity that has both magnitude, as well as direction. A vector that has a magnitude of 1 is a unit vector. It is also known as Direction Vector.

For example, vector v = (1,3) is not a unit vector, because its magnitude is not equal to 1, i.e., |v| = √(12+32) ≠ 1. Any vector can become a unit vector by dividing it by the magnitude of the given vector.

The normal vector is a vector which is perpendicular to the surface at a given point. It is also called “normal,” to a surface is a vector.

When normals are estimated on closed surfaces, the normal pointing towards the interior of the surface and outward-pointing normal are usually discovered.
1: Find the magnitude of vector u.
Magnitude of u = √((-8)^2 + (-15)^2) = √(64 + 225) = √289 = 17
2: Find the unit vector in the direction of u.
Unit vector in the direction of u = (u_x / magnitude, u_y / magnitude) = (-8/17, -15/17)
(a) The unit vector in the direction of u is (-8/17, -15/17).
3: Find the unit vector in the direction opposite that of u.
Unit vector in the direction opposite that of u = -1 * (u_x / magnitude, u_y / magnitude) = (8/17, 15/17)
(b) The unit vector in the direction opposite that of u is (8/17, 15/17).

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To find dy/dt, we will first differentiate the given equation y = cos(6x) with respect to t using the chain rule.

Differentiating both sides of the equation with respect to t, we get:
dy/dt = -6sin(6x) * dx/dt

Now, we are given that x = π/12 and dx/dt = -4 when x = π/12. Substitute these values into the equation:
dy/dt = -6sin(6(π/12)) * (-4)
dy/dt = -6sin(π/2) * (-4)

Since sin(π/2) = 1, we have:
dy/dt = -6 * 1 * (-4)
dy/dt = 24

So, when x = π/12 and dx/dt = -4, dy/dt = 24.

To find dy/dt, we need to differentiate both sides of the equation y = cos(6x) with respect to t using the chain rule:
dy/dt = -sin(6x) * d(6x)/dt

Since x is a function of t, we can use the chain rule again to find d(6x)/dt:
d(6x)/dt = 6 * dx/dt

Now we can substitute dx/dt = -4 and x = pi/12 into the above equations to get:
d(6x)/dt = 6 * (-4) = -24

and
sin(6x) = sin(6 * pi/12) = sin(pi) = 0

Therefore, we have:
dy/dt = -sin(6x) * d(6x)/dt = 0 * (-24) = 0

So the exact answer is dy/dt = 0.

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Using the formula for an infinite geometric series, the sum of the given series can be estimated as S ≈ 6.00000.

To estimate the sum of the series n = 1 to infinity of (2n+1) - 9, we can use the formula for an infinite geometric series:

S = a / (1 - r)

where S is the sum of the series, a is the first term, and r is the common ratio. In this case, a = (2(1)+1) - 9 = -6 and r = 2.

Thus, we can estimate the sum as:

S ≈ -6 / (1 - 2) = 6

To express this answer correct to five decimal places, we would write:

S ≈ 6.00000

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When a fish is attached to a vertical spring and slowly lowered to its equilibrium position, the spring stretches by an amount d, as it balances the force exerted by the spring with the force due to the fish's weight.

Here, a fish attached to a vertical spring. When a fish is attached to a vertical spring and slowly lowered to its equilibrium position, the spring will stretch by an amount d.
The equilibrium position is the point where the force exerted by the spring equals the force due to the fish's weight (gravitational force). In this scenario, the spring stretches until it reaches a balance between these forces. The amount by which the spring stretches is denoted as d.
To summarize, when a fish is attached to a vertical spring and slowly lowered to its equilibrium position, the spring stretches by an amount d, as it balances the force exerted by the spring with the force due to the fish's weight.

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To compute gcd(57, 93), we can use the Euclidean algorithm:
93 = 1*57 + 36
57 = 1*36 + 21
36 = 1*21 + 15
21 = 1*15 + 6
15 = 2*6 + 3
6 = 2*3 + 0

Since the remainder is 0, the gcd is the last nonzero remainder, which is 3.

To find integers s and t such that 57s + 93t = gcd(57, 93) = 3, we can use the extended Euclidean algorithm. Starting from the bottom of the Euclidean algorithm:

3 = 15 - 2*6
3 = 15 - 2*(21 - 15) = 3*15 - 2*21
3 = 3*(57 - 36) - 2*21 = 3*57 - 5*21
3 = 3*57 - 5*(93 - 57) = 8*57 - 5*93

Therefore, s = 8 and t = -5 are integers that satisfy 57s + 93t = gcd(57, 93).

To compute gcd(57, 93) and find integers s and t such that 57s + 93t = gcd(57, 93), you can use the Extended Euclidean Algorithm.

First, find gcd(57, 93):
93 = 1 * 57 + 36
57 = 1 * 36 + 21
36 = 1 * 21 + 15
21 = 1 * 15 + 6
15 = 2 * 6 + 3
6 = 2 * 3

The gcd(57, 93) is 3.

Now, to find integers s and t, work backward using the Extended Euclidean Algorithm:
3 = 15 - 2 * 6
3 = 15 - 2 * (21 - 1 * 15)
3 = 3 * 15 - 2 * 21
3 = 3 * (57 - 1 * 36) - 2 * 21
3 = 3 * 57 - 5 * 36
3 = 3 * 57 - 5 * (93 - 1 * 57)

So, s = 3 and t = -5. The equation is 57s + 93t = gcd(57, 93), which is 57(3) + 93(-5) = 3.

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The total length of wires between the two poles would be 70.80m.

To connect two poles using a cable, the total length of wires needed would depend on the distance between the two poles. In this case, assuming a single cable is used, the length of the cable is 5.90m, and 12 wires of this length are required for connection.

To calculate the total length of wires between the two poles, we can multiply the length of the cable by the number of wires required, which gives us:

5.90m x 12 = 70.80m

Therefore, the total length of wires between the two poles would be approximately 70.80 meters. It is important to note that this calculation assumes that the cable is stretched straight between the two poles, and there are no additional bends or curves that would increase the length of the wires required.

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To evaluate the derivative of the given function f(x) = sin(cos^(-1)(5w)), we first need to apply the chain rule. The chain rule states that the derivative of a composition of functions is the product of the derivative of the outer function times the derivative of the inner function.

Let's break it down: 1. The outer function is g(u) = sin(u), where u = cos^(-1)(5w), (2). The inner function is h(w) = cos^(-1)(5w). First, find the derivative of the outer function with respect to u:
g'(u) = cos(u).

Next, find the derivative of the inner function with respect to w: h'(w) = d/dw [cos^(-1)(5w)]. To find h'(w), we use the formula for the derivative of the inverse cosine function: d/dw [cos^(-1)(x)] = -1/√(1-x^2). Thus, h'(w) = -1/√(1-(5w)^2) * d/dw [5w]. h'(w) = -5/√(1-25w^2). Now, apply the chain rule: f'(x) = g'(u) * h'(w).

Substitute g'(u) and h'(w) into the equation: f'(x) = cos(u) * (-5/√(1-25w^2)). Finally, replace u with the original inner function, cos^(-1)(5w): f'(x) = cos(cos^(-1)(5w)) * (-5/√(1-25w^2)). Since cos(cos^(-1)(x)) = x, we simplify the expression to:
f'(x) = -5w/√(1-25w^2).

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the mixed partial derivatives (i.e. the derivatives with respect to both x and y) are zero, which tells us that the order of differentiation doesn't matter in this case.

To find the second-order derivatives of g(x, y) = ln(2x − y), we will need to differentiate the function twice with respect to each variable.

1. First, we take the partial derivative of g with respect to x:

∂g/∂x = 2/(2x - y)

2. Next, we take the partial derivatives of ∂g/∂x with respect to x:

∂²g/∂x² = -4/(2x - y)²

3. Then, we take the partial derivative of g with respect to y:

∂g/∂y = -1/(2x - y)

4. Finally, we take the partial derivative of ∂g/∂y with respect to y:

∂²g/∂y² = 1/(2x - y)²

Therefore, the four second order derivatives of g(x, y) = ln(2x − y) are:

∂²g/∂x² = -4/(2x - y)²
∂²g/∂y² = 1/(2x - y)²
∂²g/∂x∂y = 0
∂²g/∂y∂x = 0

Note that the mixed partial derivatives (i.e. the derivatives with respect to both x and y) are zero, which tells us that the order of differentiation doesn't matter in this case.

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Answer:

x > 2

Step-by-step explanation:

First, we are going to have to add 4 to both sides

6x - 4 + 4 > 8 + 4

6x > 12

Next, we divide both sides by 6

[tex]\frac{6x}{6} > \frac{12}{6}[/tex]

We get x > 2

From the given ANOVA table the correct conclusion is: "There is no evidence of a significant difference between the population means."

The ANOVA (analysis of variance) table is a statistical tool used to analyze whether there is a significant difference among the means of two or more groups. In this case, the ANOVA table shows that there is no significant difference between the means of the groups because the p-value (0.281) is greater than the alpha level (usually set at 0.05 or 0.01) which indicates that there is no statistical evidence to reject the null hypothesis that the means are equal.

Therefore, the correct conclusion is that there is no evidence of a significant difference between the population means.

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The sequence {an} converges to 0 as n approaches infinity.

The given sequence is {an} = 4(0.1)^n. To determine its convergence, we can apply the definition of convergence. A sequence converges if its terms get arbitrarily close to a single limit value as n approaches infinity.

Now, as n approaches infinity, the term (0.1)^n approaches zero. Therefore, the sequence {an} approaches zero multiplied by a constant value, which is 4. So, the sequence converges to the limit value of zero.

We can also verify this using the limit definition of convergence. Let L be the limit of the sequence. Then, for any ε > 0, there exists an N such that |an - L| < ε for all n ≥ N.

In this case, let ε > 0 be given. We need to find an N such that |4(0.1)^n - 0| < ε for all n ≥ N. We can rewrite this as (0.1)^n < ε/4. Taking the logarithm of both sides, we get n > log(ε/4)/log(0.1). So, we can choose N = ⌈log(ε/4)/log(0.1)⌉ + 1. Then, for all n ≥ N, we have |an - 0| = |4(0.1)^n - 0| < ε. Thus, the sequence {an} converges to the limit value of zero.

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To compute the derivative of d - 14x - 14x d dxx, we can use differentiation techniques. Specifically, we can use logarithmic differentiation where appropriate.

First, we can simplify the expression to get:

d - 28x d dxx

Next, we can apply logarithmic differentiation to the expression. This involves taking the natural logarithm of both sides of the equation and then using the properties of logarithms to simplify the expression.

ln(d - 28x) = ln(d) + ln(1 - 28x/d)

Next, we can take the derivative of both sides of the equation with respect to x using the chain rule and product rule:

1/(d - 28x) * d/dx(d - 28x) = d/dx(ln(d)) + d/dx(ln(1 - 28x/d))

Simplifying the expression using the rules of logarithms and algebra, we get:

-28/(d - 28x) = 0 + (-28/d)/(1 - 28x/d)

Finally, we can simplify the expression by multiplying both sides by (d - 28x) and simplifying:

-28 = -28 + 784x/d^2

Therefore, the derivative of d - 14x - 14x d dx is:

d/dx(d - 14x - 14x d dxx) = 784x/d^2.

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When we say that a simple linear regression model is statistically useful, it means that the model effectively describes the relationship between two variables, using terms like: Independent variable (X), Dependent variable (Y), Linear relationship, Coefficient of determination[tex](R^2)[/tex], Significance level (α).

Independent variable (X):

The variable that influences or predicts the dependent variable.

Dependent variable (Y):

The variable that is influenced or predicted by the independent variable.
Linear relationship:

A straight-line relationship between the independent and dependent variables, represented by the equation

Y = a + bX.
Coefficient of determination[tex](R^2)[/tex]:

A measure of how well the regression line fits the data, ranging from 0 to 1

higher[tex]R^2[/tex] indicates a better fit.
Significance level (α):

The threshold below which we reject the null hypothesis (i.e., no relationship between X and Y).

Typically, α is set at 0.05 or 0.01.
In summary, a simple linear regression model is statistically useful if it accurately represents the linear relationship between an independent and dependent variable, with a high[tex]R^2[/tex]value and a significance level below the chosen threshold.

This allows us to make informed predictions and draw conclusions about the relationship between the two variables.

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The value of KL in the right triangle JKL is determined as 5.34.

To find the value of side length KL, we need to determine the value of opposite side of triangle JML.

Apply trigonometry identity as follows;

tan (51) = JL/JM

tan (51) = JL/14

JL = 14 x tan(51)

JL = 17.29

The value of KL is determined by considering right triangle JKL.

cos (72) = KL / JL

cos (72) = KL/17.29

KL = 17.29 x cos (72)

KL = 5.34

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Area of shaded region is 3m².

A circle is a closed curve in a plane that is formed by a set of points that are all the same distance from a fixed point called the center. The distance from the center to any point on the circle is called the radius, and a line segment that passes through the center and has endpoints on the circle is called the diameter.

In the given circle,

Area of sector with angle 60°=θ/360° (r²)

radius of circle=6m

Area of sector =60/360×π×6²

=1/6×π×36

=6π

=18.84m²

Area of triangle with angle 60°=1/2ab×Sin60°

=1/2×6²×Sin60°

=15.58m²

Area of shaded region=Area of sector with angle 60°-Area of triangle with angle 60°

=18.84-15.58

=3.26≈3m²

Hence, Area of shaded region is 3m².

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we can say that it is most likely that each color will come up approximately 7 times, but it is possible that some colors may come up more or less frequently than others.

if we assume that each side has an equal chance of being rolled, then we can make some predictions based on probability.

Since there are six sides on the cube and each has an equal probability of being rolled, we can calculate the probability of rolling each color as:

Blue: 1/6

Green: 1/6

Red: 1/6

Orange: 1/6

Brown: 1/6

Yellow: 1/6

If Brian rolls the cube 42 times, we would expect each color to come up approximately 1/6 of the time, or about 7 times. However, since there is some randomness involved, it is possible that some colors may come up more or less frequently than others.

Based on this information, we can say that it is most likely that each color will come up approximately 7 times, but it is possible that some colors may come up more or less frequently than others.

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Using formula (5) in Section 4.2, we can find a second solution y2(x) for the differential equation x^2y′′ +2xy −6y=0, given that y1(x) = x^2 is already a solution.

The differential equation is x^2y′′ +2xy −6y=0, and y1(x) = x^2 is already a solution. We can use formula (5) in Section 4.2 to find a second solution y2(x), which is given by:

y2(x) = y1(x)∫[-∫P(x)/y1^2(x)]dx dx

where P(x) is the coefficient of y' in the differential equation. In this case, P(x) = 2x.

Substituting y1(x) = x^2 and P(x) = 2x into the formula, we get:

y2(x) = x^2 ∫[-∫(2x)/x^4]dx dx

Simplifying the integrals, we have:

y2(x) = x^2 ∫[-2/x^3]dx = -x^2/x^2 = -1

Therefore, the second solution is y2(x) = -1.

We can check that both y1(x) = x^2 and y2(x) = -1 are indeed solutions of the differential equation by verifying that they satisfy the equation.

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The answer is D. 4 months.

To answer this question, we need to understand the difference between incidence and prevalence. Incidence refers to the number of new cases of a disease that develop over a specific period of time (usually one year), while prevalence refers to the total number of cases of a disease that exist in a population at a given point in time.

The incidence rate of a disease is given as 200/100,000 person-years, which means that 200 new cases of the disease occur per 100,000 people each year. The prevalence of the disease in the population is given as 0.05%, which means that 0.05% of the population has the disease at a given point in time.

To calculate the average duration of illness among individuals who contract this disease, we can use the following formula:

Average duration of illness = 1 / incidence rate

Plugging in the numbers, we get:

Average duration of illness = 1 / (200/100,000) = 500 years per case

However, this answer is not in a useful format, so we need to convert it to a more meaningful unit, such as months or years. To do this, we divide by the number of months or years in a person-year, which is 12 months.

Average duration of illness = 500 / 12 = 41.67 months

Rounding to the nearest month, we get:

Average duration of illness = 42 months

The answer is D. 4 months.

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The evaluate value of the integral

[tex] I = \int_R{sin(x² + y²)dA}[/tex]

where R is the disk of radius 2 centered at the origin is equals to the, π( 1 - cos(4))

= 4.26.

Double Integral with Polar Coordinates: To solve this problem use the formula

[tex] ∬_D f(x,y)dA = ∬_R f(r,θ)rdrdθ[/tex]

and use the polar identities, x = rcos⁡(θ), y= rsin⁡(θ), here we have two polar parameters: r and theta. We have, an integral,[tex] I = \int_R{sin(x² + y²)dA}[/tex]

where R is the disk of radius is 2 centered at the origin. We have to evaluate the above integral.

Since R is a circle or radius r = 2, 0≤r ≤2,

0≤ θ ≤ 2π. Thus, [tex]{ \int_R\sin (x^2+y^2)dA}[/tex]

= [tex] \int_{0}^{2 \pi} \int_{0}^{2}\, r \sin \left(r^2\right)\,\, dr\, d\theta [/tex]

First we integrate with respect to r

[tex]=\int_{0}^{2 \pi} \left(-\frac{1}{2} \cos \left(r^2\right)\right)\bigg|_{0}^{2}\, d\theta [/tex]

[tex]=\int_{0}^{2 \pi} \left( \frac{1-\cos(4) }{2} \right)\, d\theta[/tex]

Now, integrating with respect to theta,

[tex]= [( \frac{1 - cos(4)}{2} )\theta]_0^{2π}[/tex] = π( 1 - cos(4))

= 4.26.

Hence required value is 4.26.

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The polygon is drawn and attached

The polygon attached is a composite polygon involving a square and a triangle

The square has side of 5 cm and area of a square is calculated using the formula

length *  width

where

length = width = 5 cm

Area of a square = 5 * 5 = 25 square cm

The triangle has a base of 5 cm and height of AB = 2 cm, area of a triangle is given by the formula

= 1/2 * base * height

= 1/2 * 5 * 2

= 2.5 * 2

= 5 square cm

adding the two areas we have

= 25 + 5

= 30 square cm

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This means that producing one more hair dryer when 150 hair dryers are already produced will generate an additional profit of $19/30.

a. To find the average revenue per hair dryer of 100 dryers produced, we need to first calculate the total revenue generated by producing 100 hair dryers. This can be done by substituting x=100 in the revenue function: R(100)=40(100)-0.1(100)^2=4000-100=3900.

Next, we divide the total revenue by the number of hair dryers produced to get the average revenue per hair dryer: Average revenue = Total revenue/Number of hair dryers = 3900/100 = $39 per hair dryer.

b. The marginal average revenue is the additional revenue generated by producing one more hairdryer. It can be found by taking the derivative of the revenue function: R'(x)=40-0.2x. Then, we can substitute x=100 to find the marginal average revenue when 100 hair dryers are produced: R'(100)=40-0.2(100)=20.

This means that producing one more hair dryer when 100 hair dryers are already produced will generate an additional $20 in revenue.

c. The marginal average profit is the additional profit generated by producing one more hairdryer. To find this, we need to subtract the marginal cost from the marginal revenue. The marginal cost can be found by taking the derivative of the cost function: C'(x)=5. Then, we can substitute x=150 to find the marginal cost when 150 hair dryers are produced: C'(150)=5.

The marginal average profit at a production level of 150 hair dryers can be calculated as follows:

Marginal average profit = Marginal revenue - Marginal cost
= [R'(150)/150] - [C'(150)/150]
= [(40-0.2(150))/150] - [5/150]
= [10/15] - [1/30]
= [20/30] - [1/30]
= $19/30 per hair dryer

This means that producing one more hair dryer when 150 hair dryers are already produced will generate an additional profit of $19/30.

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The horizontal distance from the base of the skyscraper is 984 feet.

A study on the uses of trigonometry is called Heights and Distances. It can be used in many real-world situations to measure things like an object's height, depth, or the separation between two heavenly objects, among other things.

Given that,

Height of deck h = 984 feet,

Angle of depression θ = 45°

Let horizontal distance is x,

To find horizontal distance of base, use height and distance formula,

[tex]\text{tan}\ \theta = \dfrac{\text{h}}{\text{x}}[/tex]

Substitute, the values of h and θ,

[tex]\text{tan 45} = \dfrac{984}{\text{x}}[/tex]

[tex]\therefore\text{tan 45} =1[/tex]

[tex]1= \dfrac{984}{\text{x}}[/tex]

[tex]\implies \text{x} = 984 \ \text{feet}[/tex]

The horizontal distance from the base of the skyscraper is 984 feet.

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The mean absolute deviation of the given numbers is 0.5.

The mean is the sum of all values divided by the total number of values.

The mean of the given number is obtained by dividing the sum of the values by its total number of value.

[tex]\dfrac{(1.6+1.7+2.5+2.8+2.8+3)}{6} = 2.4[/tex]

Then taking the difference of each number from the mean.

[tex](1.6-2.4), (1.7-2.4),(2.5-2.4),(2.8-2.4),(2.8-2.4),(3-2.4)[/tex]

[tex]-0.8,-0.7,0.1,0.4,0.4,0.6[/tex]

Take the sum of the absolute value of the above numbers

[tex]|-0.8+-0.7+0.1+0.4+0.4+0.6| = 3[/tex]

Divide 3 by 6 to obtain mean absolute deviation.

[tex]\dfrac{3}{6} = \dfrac{1}{2} =0.5[/tex]

Hence, 0.5 is the mean absolute deviation of the given numbers.

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