if -4, -2, & 1 are the roots, what is the equation

The total volume of the object is 96 m^3.

A cuboid is a three dimensional shape that is formed from a rectangle. Thus its dimensions are: length, width and height.

The volume of a cuboid = length x width x height

Considering the object given in the diagram, divide it into two rectangular prisms. So that;

i. volume of rectangular prism 1 = length x width x height

                                    = 5 x 3 x 4

                                    = 60

The volume of rectangular prism 1 is 60 cubic meters.

ii. volume of rectangular prism 2 = length x width x height

                                    = 4x 3 x 3

                                    = 36

The volume of rectangular prism 2 is 36 cubic meters.

Thus,

total volume of the object = 60 + 36

                                           = 96

The total volume of the object is 96 m^3.

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Answer:x= -9/2 which is -4.5

Step-by-step explanation:

8(x+5)=4

first divide by 8

(x+5)=4/8

simplify

(x+5)=1/2

subtract 5

x=1/2-5

change 5 to have a denominator of 2

5 x 2/2

=10/2

x= 1/2-10/2

=-9/2

The component form of vector v is ((9√6+3√2)/2, (9√6-3√2)/2).

To get the component form of a vector given its magnitude and direction angle, we can use the following formulas:
v = ||v|| [cos(Ɵ)i + sin(Ɵ)j]
where v is the vector in component form, ||v|| is the magnitude of the vector, Ɵ is the direction angle in degrees, and i and j are the unit vectors in the x and y directions, respectively.
Step:1. For |v|=20 and Ɵ = 60o, we have:
v = 20 [cos(60o)i + sin(60o)j]
 = 20 [(1/2)i + (√3/2)j]
 = 10i + 10√3j
Therefore, the component form of vector v is (10, 10√3).
Step:2. For |v|=12 and Ɵ = 125o, we have:
v = 12 [cos(125o)i + sin(125o)j]
 = 12 [(-√2/2)i + (√2/2)j]
 = -6√2i + 6√2j
Therefore, the component form of vector v is (-6√2, 6√2).
Step:3. For |v|=18 and Ɵ = 75o, we have:
v = 18 [cos(75o)i + sin(75o)j]
 = 18 [(√6+√2)/4)i + (√6-√2)/4)j]
 = (9√6+3√2)/2)i + (9√6-3√2)/2)j
Therefore, the component form of vector v is ((9√6+3√2)/2, (9√6-3√2)/2).

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Answer:

b) 2nd degree

Step-by-step explanation:

     Highest exponent of the variable x, is the degree of the polynomial.

 Highest power is 2. So the degree is 2.

The measure of CFE is 28^o.

When the measures of two or more angles add up to the sum of angle on a straight line i.e. 180^o, then the set of angles are said to be supplementary.

Given point F on line CD in the question, we have;

<CFE + <DFE = 180^o  (definition of supplementary angles)

So that;

<CFE + 152 = 180

<CFE = 180 - 152

         = 28

<CFE = 28^o

Therefore, the measure of <CFE is 28^o.

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The distance from the zebra habitat to the giraffe habitat is approximately 77.2 meters.

The similarity of triangles states that the ratio of the two sides of the triangles will be constant.

Since the triangles are similar, apply the proportional theorem and calculate the distance d from the Zebra habitat to the Giraffe.

Using the values from the figure:

(d + 386) / d = 360 / 60

Simplify the equation written below,

d + 386 = 6d

5d = 386

d = 77.2

Therefore, the distance from the zebra habitat to the giraffe habitat is approximately 77.2 meters, rounded to the nearest tenth.

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Using the given information, the area of R is 6 times bigger than the area of Q

From the question, we are to determine how many times bigger the area of R is than the area of Q

From the given information,

Q is 1/4 of a circle of radius 10 cm

The area of a circle is given by the formula,

Area = πr²

Where r is the radius

Thus,

Area of Q = 1/4 πr²

Area of Q = 1/4 × π × (10)²

Area of Q = 1/4 × π × 100

Area of Q = 25π cm²

Also,

From the given information,

R is the 2/3 of a circle of radius 15cm

Thus,

Area of R = 2/3 πr²

Area of R = 2/3 × π × (15)²

Area of R = 2/3 × π × 225

Area of R = 450/3 π cm²

Area of R = 150 π cm²

To determine how many times bigger the area of R is than the area of Q, we will divide the area of R by the area of Q

That is,

150 π cm² /  25π cm²

= 6

Hence,

Area R is 6 times bigger than area Q

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The probability of selling at least 4 or 5 units in the first week is 0.25 or 25%.

The probability of selling at least 4 or 5 units in the first week is equal to the sum of the probabilities of selling 4 and 5 units, which is:

P(4 or 5) = P(4) + P(5) = 0.15 + 0.10 = 0.25

Probability is a branch of mathematics that deals with the study of random events or experiments. It is used to quantify the likelihood of an event occurring by assigning a number between 0 and 1, with 0 indicating that the event is impossible and 1 indicating that the event is certain to happen.

Therefore, the probability of selling at least 4 or 5 units in the first week is 0.25 or 25%.

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The bush is 26.4 inches tall after 2 weeks. This means it has grown by 14.4 inches since it was first planted and the percentage increase is 120%

To calculate the height of the bush after 2 weeks, we can use the following formula:

New height = initial height + (percent increase/100) * initial height

In this case, the initial height of the bush is 12 inches, and the percent increase is 120%. Plugging in these values, we get:

New height = 12 + (120/100) * 12

New height = 12 + 14.4

New height = 26.4 inches

Therefore, the bush is 26.4 inches tall after 2 weeks. This means it has grown by 14.4 inches since it was first planted.

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The value of the perimeter of the given isosceles triangle with a vertex at B will be 40 units.

We have,

A triangle is a 3-sided shape that is occasionally referred to as a triangle. There are three sides and three angles in every triangle, some of which may be the same.

The sum of all three angles inside a triangle will be 180° and the area of a triangle is given as (1/2) × base × height.

As per the given isosceles triangle with vertices, ABC is drawn below.

Since B is the vertex thus BA = BC

6x + 3 = 8x - 1

2x = 4

x = 2

So, AB = 6(2) + 3 = 15

BC = 8(2) - 1 = 15

AC = 10(2) - 10 = 10

Perimeter = 15 + 15 + 10 = 40 units.

Hence "The value of the perimeter of the given isosceles triangle with a vertex at B will be 40 units".

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complete question:

Triangle ABC is an isosceles triangle with angle B as the vertex angle. Find the perimeter if AB = 6x + 3, BC = 8x - 1, and AC = 10x - 10. Perimeter = ______ units

Based on the information provided, 90% of wildfires being "human caused" means that these wildfires are initiated or influenced by human activities, rather than natural causes. This does not necessarily imply arson, as there are various other ways in which humans can unintentionally start or contribute to wildfires.

Some specific examples of human-caused wildfires include:

1. Unattended campfires: When people leave campfires without properly extinguishing them, the fire can spread to nearby vegetation and ultimately result in a wildfire.
2. Burning debris: People may burn yard waste or other materials without proper safety measures, which can lead to wildfires if the fire is not contained or controlled.
3. Discarded cigarettes: Carelessly thrown cigarette butts can ignite dry vegetation and start a wildfire.
4. Equipment use: Sparks from power tools or vehicles, such as chainsaws, lawnmowers, or off-road vehicles, can ignite dry vegetation and cause wildfires.
5. Power lines: Falling or damaged power lines can spark and ignite a wildfire.

While arson is one potential cause of human-caused wildfires, it is important to recognize that there are many other factors and activities that contribute to the majority of these fires. By understanding these causes, we can take preventive measures and reduce the occurrence of wildfires.

For more information and support, you can refer to this National Park Service article on human-caused wildfires: [Human-Caused Wildland Fires](https://www.nps.gov/articles/human-caused-wildland-fires.htm).

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y = -4 (1+x)^1.5 * cos[log(1+x)] + 6 (1+x)^1.5 * sin[log(1+x)] / e

To solve the differential equation:

(1+x) * dy/dx + y = 4 sin[log(1+x)]

We first need to find the integrating factor, which is given by:

μ(x) = e^(∫(1+x)dx) = e^(x + 0.5x^2)

Multiplying both sides of the differential equation by the integrating factor, we get:

e^(x+0.5x^2) * (1+x) * dy/dx + e^(x+0.5x^2) * y = 4 e^(x+0.5x^2) * sin[log(1+x)]

The left-hand side can be simplified using the product rule:

d/dx [e^(x+0.5x^2) * y] = e^(x+0.5x^2) * (1+x) * dy/dx + e^(x+0.5x^2) * y'

Substituting this into the differential equation and rearranging, we get:

d/dx [e^(x+0.5x^2) * y] = 4 sin[log(1+x)] * e^(x+0.5x^2)

Integrating both sides with respect to x, we get:

e^(x+0.5x^2) * y = ∫ 4 sin[log(1+x)] * e^(x+0.5x^2) dx

We can evaluate the integral on the right-hand side using substitution, letting u = log(1+x), du/dx = 1/(1+x), and dx = e^u du:

∫ 4 sin[log(1+x)] * e^(x+0.5x^2) dx = ∫ 4 sin(u) * e^(u-0.5u^2+u) du

= ∫ 4 sin(u) * e^(1.5u-0.5u^2) du

We can now use integration by parts, letting u = sin(u), dv = e^(1.5u-0.5u^2) du:

∫ 4 sin(u) * e^(1.5u-0.5u^2) du = -4 e^(1.5u-0.5u^2) cos(u) + 6 ∫ e^(1.5u-0.5u^2) cos(u) du

Using integration by parts again, letting u = cos(u), dv = e^(1.5u-0.5u^2) du:

∫ e^(1.5u-0.5u^2) cos(u) du = e^(1.5u-0.5u^2) sin(u) + ∫ e^(1.5u-0.5u^2) sin(u) du

Using these results to evaluate the integral on the right-hand side of the differential equation, we get:

e^(x+0.5x^2) * y = -4 e^(1.5log(1+x)-0.5log^2(1+x)) * cos[log(1+x)]

+ 6 e^(1.5log(1+x)-0.5log^2(1+x)) * sin[log(1+x)]

+ C

where C is the constant of integration. Simplifying, we get:

y = -4 (1+x)^1.5 * cos[log(1+x)] + 6 (1+x)^1.5 * sin[log(1+x)] / e

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There are 22,269,952 different 9-card hands that contain four cards of the same value in a standard deck of playing cards.

To determine how many 9-card hands contain four cards of the same value, we will use the following terms: standard deck of playing cards, 52 different cards, 13 different values, 4 different suits, 2 red suits, 2 black suits, and a hand of cards.

Your answer:

1. Choose the value of the four cards: There are 13 different values, so there are 13 ways to choose the value of the four cards.
2. Choose the four cards of the same value: For each value, there are 4 different suits, so there are 4C4 = 1 way to choose the four cards of the same value.
3. Choose the remaining 5 cards: We have already selected 4 cards, so there are 48 cards left in the deck (52 - 4 = 48). We need to choose 5 cards from these remaining 48 cards. There are 48C5 ways to do this.
4. Subtract the hands with five cards of the same value: Since we don't want hands with five cards of the same value, we need to subtract these cases. There are 13 different values, so there are 13 ways to choose the value of the five cards. For each value, there are 4 different suits, so there are 4C5 = 0 ways to choose the five cards of the same value (since it's not possible to choose 5 cards from 4).
5. Calculate the total number of 9-card hands: Multiply the number of ways to choose the value, the four cards of the same value, and the remaining 5 cards, then subtract the hands with five cards of the same value: (13 x 1 x 48C5) - (13 x 0) = 13 x 1,712,304 = 22,269,952.

So, there are 22,269,952 different 9-card hands that contain four cards of the same value in a standard deck of playing cards.

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The correct option is D. 1/4 of the distance from A to B.

D. 1/4 of distance from A to B.

The potential energy of a spring varies with the displacement of the object from its equilibrium position. At the equilibrium position, the potential energy is at a minimum, and the kinetic energy is at its maximum. As the object moves away from the equilibrium position, the potential energy increases and the kinetic energy decreases until the object reaches the maximum displacement point, where the potential energy is at a maximum and the kinetic energy is at a minimum.

In the case of a vertical spring, the equilibrium position is the midpoint between the two extreme points, A and B. At this point, the object has zero potential energy and maximum kinetic energy. As the object moves away from the equilibrium position towards point A, its potential energy increases and its kinetic energy decreases until it reaches point A, where the potential energy is at a maximum and the kinetic energy is at a minimum. Therefore, the object is located at point A when the kinetic energy is at a minimum.

Since the spring is ideal and massless, the potential energy is proportional to the square of the displacement from the equilibrium position. The kinetic energy is proportional to the square of the velocity of the object. At point A, the velocity of the object is zero, and hence the kinetic energy is at a minimum. Therefore, the object is located at point A when the kinetic energy is a minimum.

The distance from A to B is divided into four equal parts, and the object is located at the first quarter point from A to B, which is 1/4 of the distance from A to B. Therefore, the correct option is D. 1/4 of the distance from A to B.

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To find the first few coefficients in the power series for the function f(x) = x * ln(1+x), we will use the Taylor series expansion. The Taylor series for ln(1+x) is:

ln(1+x) = x - (x^2)/2 + (x^3)/3 - (x^4)/4 + ...

Now, multiply each term by x:

x * ln(1+x) = x^2 - (x^3)/2 + (x^4)/3 - (x^5)/4 + ...

The first few coefficients in the power series are: 0 (constant term), 0 (x term), 1 (x^2 term), -1/2 (x^3 term), 1/3 (x^4 term), and -1/4 (x^5 term).

For the radius of convergence, we'll use the Ratio Test. Observe the absolute value of the ratio of consecutive terms:

lim (n -> infinity) | (a_(n+1)/a_n) | = lim (n -> infinity) | (x^(n+2) * (n+1))/((n+2) * x^(n+1)) |

This simplifies to:

lim (n -> infinity) | x * (n+1)/(n+2) |

To converge, the limit must be less than 1:

|x * (n+1)/(n+2)| < 1

As n approaches infinity, the expression becomes |x|, so:

|x| < 1

Thus, the radius of convergence for the series is 1.

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The area of the sector to the nearest hundredth is 308.57units²

The space bounded by two radii and an arc is called a sector of a circle. There is minor sector and major sector.

The area of a sector is expressed as;

A = tetha/360 × πr²

where r is the radius and tetha is the angle formed by the two radii.

A = 98/369 × 3.14 × 19²

A = 111086.92/360

A = 308.57 units²( nearest hundredth)

therefore the area of the sector is 308.57 units²

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The function for the area of the campsite in terms of x only is A(x) = 60x - x^2.

1. We need to find the equation for the area and the length of the caution tape in terms of x:
a. The area of the campsite can be represented by the equation A = xy, where A is the area, and x and y are the dimensions of the campsite.
b. The length of the yellow caution tape can be represented by the equation L = 2x + 2y, where L is the length of the tape, and x and y are the dimensions of the campsite. In this case, L = 120 feet.

2. The constraint equation is L = 2x + 2y = 120 feet. This is because without this constraint, the dimensions x and y could be infinitely large, resulting in an infinitely large campsite.

3. To generate a new equation for the area of the campsite in terms of x only, we can solve the constraint equation for y and substitute it into the area equation:
L = 2x + 2y = 120
2y = 120 - 2x
y = (120 - 2x)/2 = 60 - x

Now substitute this expression for y into the area equation:
A(x) = x(60 - x) = 60x - x^2

So, the function for the area of the campsite in terms of x only is A(x) = 60x - x^2.

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The producers' surplus if the market price is set at the equilibrium price is $38.33.

The producers' surplus is calculated from the quantity supplied at equilibrium as shown below;

-0.01x² − 0.2x + 11 = 0.01x² + 0.3x + 4

-0.02x² - 0.5x + 7 = 0

solve the quadratic equation using formula method as follows;

x = -35 or 10

So we take only the positive quantity supplied.

Integrate the function from 0 to 10;

∫-0.02x² − 0.5x + 7 = [-0.00667x³ - 0.25x² + 7x]

= [-0.00667(10)³ - 0.25(10)² + 7(10)] - [-0.00667(0)³ - 0.25(0)² + 7(0)]

= -6.67 - 25 + 70

= $38.33

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The Health, Aging, and Body Composition Study is a long-term study spanning 10 years that focuses on older adults. The study looked into the relationship between pet ownership status and gender. A sample of 2,434 older adults was selected for the study, and each person was classified based on their pet ownership status and gender. The results of the study were summarized, and it was found that there is a relationship between pet ownership status and gender among older adults. However, without the specifics of the summary of the results, it is difficult to determine the exact nature of this relationship.

The complex number can be written in polar form as 2 + ((2+m) + 3i) = √(m² + 6m + 25)∠tan⁻¹(3/(2+m)).

What is complex number?

A complex number is obtained by adding real and imaginary numbers. Complex numbers have the formula a + ib and are usually symbolized by the symbol z. Here the numbers a and real are both. The value "a" is known as the real component and is denoted Re(z), while "b" is known as the imaginary part and is denoted Im(z). Also known as imaginary number, ib. Hero of Alexandria, a Greek mathematician, first used the idea of complex numbers in the first century when he tried to calculate the square root of a negative integer.

a. A complex number is a number that consists of a real part and an imaginary part, where the imaginary part is the real number multiplied by the imaginary unit "i", defined as the square root of -1. The modulus of a complex number is the distance between the starting point and the point representing the complex number on the complex plane. This can be calculated using the Pythagorean theorem. For example, the real part of the complex number z = 3 + 4i is 3 and the imaginary part is 4, and its modulus is √(3²+4²)=5.

b. Let z = a + bi be a complex number, where a and b are real numbers. The modulus of z is defined as |z| = √(a² + b²). Therefore, for the complex number z = 1 + 2i, the modulus is |z| = √(1² + 2²) = √5.

c. To write the complex number 2 = ((2+ m) + 3i) in polar form, we need to find the modulus and argument of the complex number. The modulus is |2 + ((2+m) + 3i)| = |4 + mi + 3i| = √(4² + (m+3)²) = √(m² + 6m + 25). The argument is given by tan⁻¹(Im/Re) = tan⁻¹(3/(2+m)), which gives us the angle that the complex number makes with the positive real axis. Therefore, the complex number can be written in polar form as 2 + ((2+m) + 3i) = √(m² + 6m + 25)∠tan⁻¹(3/(2+m)).

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The equation when solved for x gives x = √3 - 5y

It is important to note that the subject of formula in an equation is the variable that is being worked out.

This variable is made to stand alone on one end of the equality sign.

From the information given, we have the equation;

y = 3√(x²+3)÷15

cross multiply the values

15y = 3√(x²+3)

Divide both sides by the coefficient of √(x²+3)

15y/3 = √(x²+3)

Divide the values

5y = √(x²+3)

Find the square of both sides

25y² = x² + 3

collect terms

x² = 3 - 25y²

Find the square root

x = √3 - 5y

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The set of numbers that could represent the sides of a triangle is

{ 11, 17, 26 }.

Option E is the correct answer.

We have,

To determine whether a set of three numbers can represent the sides of a triangle, we need to check if the sum of the two shorter sides is greater than the longest side.

This is known as the Triangle Inequality Theorem.

So,

{ 7, 10, 18 }:

7 + 10 = 17, which is less than 18.

Therefore, this set cannot represent the sides of a triangle.

{ 6, 19, 25 }:

6 + 19 = 25, which is equal to 25.

Therefore, this set cannot represent the sides of a triangle.

{ 11, 17, 26 }:

11 + 17 = 28, which is greater than 26. 17 + 26 = 43, which is greater than 11. Therefore, this set can represent the sides of a triangle.

{ 8, 16, 24 }:

8 + 16 = 24, which is equal to 24.

Therefore, this set cannot represent the sides of a triangle.

Thus,

The set of numbers that could represent the sides of a triangle is

{ 11, 17, 26 }.

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Amount of butter that Pam needs is 300 g.

Given ingredients to make 10 cookies.

Ingredients needed for 10 cookies is,

Butter : 120 g

Sugar : 75 g

Plain flour : 180 g

Chocolate chips : 150 g

Eggs : 2

The proportion of each ingredient will be same.

To make 25 cookies,

Amount needed = 25 / 10 = 2.5

Amount of butter needed = 2.5 × 120 = 300 g

Hence the amount of butter needed is 300 g.

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We know that the volume of a cube is given by V = s^3, where s is the length of a side. Taking the derivative of both sides with respect to time, we get:

dV/dt = 3s^2 ds/dt

We are given that dV/dt = 77 cubic feet per second and V = 8 cubic feet. Therefore,

77 = 3s^2 ds/dt
ds/dt = 77/(3s^2)

We also know that the surface area of a cube is given by A = 6s^2. Taking the derivative of both sides with respect to time, we get:

dA/dt = 12s ds/dt

Substituting ds/dt from above, we get:

dA/dt = 12s (77/(3s^2))
dA/dt = 308/s

At the instant when the volume of the cube is 8 cubic feet, s = (8)^(1/3) = 2, since s is the length of a side. Therefore,

dA/dt = 308/2 = 154

So the rate of change of the surface area of the cube is 154 square feet per second.
To solve this problem, we will use the given information about the rate of change of volume and relate it to the rate of change of surface area. First, let's express the volume (V) and surface area (A) of a cube in terms of its side length (s):

1. Volume of a cube: V = s³
2. Surface area of a cube: A = 6s²

Now, differentiate both equations with respect to time (t):

1. dV/dt = 3s² ds/dt
2. dA/dt = 12s ds/dt

We are given that dV/dt = 77 cubic feet per second. We need to find dA/dt when the volume is 8 cubic feet.

From the volume equation (V = s³), we can find the side length (s) when the volume is 8 cubic feet:

8 = s³
s = 2 feet (since 2³ = 8)

Now, we can find ds/dt by plugging in the values for s and dV/dt into the first differentiated equation:

77 = 3(2²) ds/dt
77 = 12 ds/dt
ds/dt = 77/12 feet per second

Now that we have ds/dt, we can find dA/dt by plugging in the values for s and ds/dt into the second differentiated equation:

dA/dt = 12(2)(77/12)
dA/dt = 24(77/12)
dA/dt = 154 square feet per second

So, the rate of change of the surface area of the cube is approximately 154 square feet per second when the volume is 8 cubic feet.

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The five-number summary for the data set is:

Minimum value = 10

Q1 = 14

Median = 18.5

Q3 = 24

Maximum value = 28.

The box and whisker plot is given.

We have,

To find the five-number summary, we need to first sort the data set in ascending order:

10, 12, 14, 15, 16, 18, 22, 24, 25, 28

Minimum value:

The smallest value in the data set is 10, so this is the minimum value.

Q1 (first quartile):

This is the value that separates the bottom 25% of the data from the top 75%.

To find Q1, we need to find the median of the lower half of the data.

The lower half of the data consists of the values 10, 12, 14, 15, and 16.

The median of these values is 14, so Q1 is 14.

Median (Q2):

This is the value that separates the bottom 50% of the data from the top 50%.

To find the median, we take the average of the two middle values.

The middle values are 18 and 19, so the median is (18+19)/2 = 18.5.

Q3 (third quartile):

This is the value that separates the bottom 75% of the data from the top 25%.

To find Q3, we need to find the median of the upper half of the data.

The upper half of the data consists of the values 22, 24, 25, and 28.

The median of these values is 24, so Q3 is 24.

Maximum value:

The largest value in the data set is 28, so this is the maximum value.

Therefore,

The five-number summary for the data set are minimum value = 10,

Q1 = 14, median = 18.5, Q3 = 24, maximum value = 28.

The box and whisker plot is given.

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The surface area of the cylinder is approximately 24.1 mm² rounded to the nearest tenth.

To find the surface area of a cylinder, we need to add the areas of its top and bottom circles, as well as the area of its curved lateral surface.

The formula for the surface area of a cylinder is:

Surface area = 2πr² + 2πrh

Where:

r is the radius of the cylinder

h is the height of the cylinder

Given that the radius is 1.2 mm and the height is 2 mm, we can substitute these values into the formula and get:

Surface area = 2π(1.2)² + 2π(1.2)(2)

Surface area = 2π(1.44) + 2π(2.4)

Surface area = 2(1.44π + 2.4π)

Surface area = 2(3.84π)

Surface area = 7.68π

Now, we can use a calculator to approximate this value to the nearest tenth:

Surface area ≈ 24.1 mm²

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The total amount of flour that Annie has is 4 3/8 pounds

Annie has 1 5/8 pounds of all-purpose flour

She also has 2 3/4 pounds of whole wheat flour

The total amount of flour is

1 5/8 + 2 3/4

= 13/8 + 11/4

The LCM is 8

13 + 22/8

= 35/8

= 4 3/8

Hence the total amount of flour that Annie has in her kitchen is 4 3/8 pounds

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The price at which the video game should be sold to maximize profit is $19.40 (to the nearest cent).

We have,

To find the price at which the video game should be sold to maximize profit, we need to find the x-value that corresponds to the maximum value of y.

The equation that relates profit to selling price is:

y = -5x^2 + 194x - 990

To find the x-value that maximizes profit, we need to find the vertex of the parabolic graph represented by this equation.

The x-coordinate of the vertex is given by:

x = -b/2a

where a is the coefficient of the x^2 term, and b is the coefficient of the x term.

In this case,

a = -5 and b = 194, so:

x = -194/(2 (-5)) = 19.4

Thus,

The price at which the video game should be sold to maximize profit is $19.40 (to the nearest cent).

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