can someone pls help with this

a. The equation is Total Cost = 0.75x + $600

b. Total cost is $60,600 and net profit is $19,400.

c. The breakeven level of sales volume is $2,400.

a. The equation relating total cost and sales volume can be expressed as:

Total Cost = Cost of Goods Sold + Selling Expenses + Fixed Expenses

where Cost of Goods Sold = 60% (100% - 40%) of the sales volume

           Selling Expenses = 15% of the sales volume

           Fixed Expenses = $600.

Therefore, the equation can be written as:

Total Cost = 0.6x + 0.15x + $600
                 = 0.75x + $600

b. For sales of $80,000, we can substitute x = $80,000 into the equation:

Total Cost = 0.75x + $600
                 = 0.75($80,000) + $600
                 = $60,000 + $600
                 = $60,600

To calculate net profit before taxes, we need to subtract the total cost from the sales volume:

Net Profit before Taxes = Sales - Total Cost
                                       = $80,000 - $60,600
                                       = $19,400

c. To find the breakeven level of sales volume, we need to set the net profit before taxes to zero and solve for x:

Net Profit before Taxes = Sales - Total Cost
               0                      = x - (0.6x + 0.15x + $600)
               0                      = 0.25x - $600
            0.25x                  = $600
               x                       = $2,400

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The actual perimeter of the kitchen is 8 inch

To find the perimeter, we have to get the length of all of the sides of the kitchen

The kitchen is a rectangle

perimeter of rectangle = 2(l + b)

= 2 (2 1/4 + 1 3/4)

2(9/4 + 7/4)

2 * 4

= 8

The perimeter of the kitchen is 4 inch

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The dimensions of the poster with an area of 392 square inches is equal to 14 inches and 28 inches.

Area of rectangular poster to print = 392 square inches

Let us assume that dimensions of the posters are,

Width of the poster is x inches and the length of the poster is y inches.

Area of the rectangular poster is,

xy = 392

Add 2 inches to the top and bottom margins for a total of 4 inches

And 1 inch to the left and right margins for a total of 2 inches.

Total area of the poster including the margins using the following equation,

Total area = (x + 2) × (y + 4)

Minimize the total area of the poster while still satisfying the area constraint.

Use the first equation to solve for one variable

And substitute it into the second equation,

y = 392/x

Total area = (x + 2) × (392/x + 4)

⇒ Total area = 4x + 392 +784/x + 8

⇒Total area = 4x + 400 +784/x

Minimize the total area, take the derivative of this expression with respect to x and set it equal to 0,

d/dx (4x + 400 +784/x ) = 0

⇒  4 + 0 - 784/x² = 0

⇒ x² = 784 /4

⇒ x = 14

Substituting this value of x back into the equation for y, we get,

y = 392/14

  = 28

Therefore, the dimensions of the poster should be 14 inches by 28 inches.

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Gail's observations about the box is correct. According to the question the edge of a cube-shaped box is 1 yard.

Now convert the edge length to feet as : 1 yard = 3 feet.

On checking the observations:

1.  According to Janae the area of each face is 9 square feet. Calculating the surface area of one face of the cube is given by:

Area = (edge length)² = (3 feet)² = 9 square feet.

Now, Total surface area = 6*9square feet= 54 square feet.

Hence Observations of Janae is not correct.

2. According to Archie perimeter of each face of the box is 3 feet. Calculating the perimeter of each face of the cube is given by:

Perimeter= 4 × (edge length)=4×1 yard= 4×3feet=12 feet

Hence Archie observation is not correct also.

3. According to Gail the volume of the box is 1 cubic yard.

The volume of a cube is given by:

volume= (edge length)³ = (1 yard)³ = 1 cubic yard.

Therefore Gail's observation is correct.

From all the above observations it can be concluded that only Gail's observation is correct.

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The second hand of a clock rotates once around the clock face in 60 seconds or one minute. Therefore, in 4 minutes, the second hand will rotate 4 times around the clock face.

The length of the second hand of a clock is 8 cm. The distance traveled by the top of the second hand in one full rotation is equal to the circumference of a circle with radius 8 cm, which is 2πr = 2π(8) = 16π cm.

The distance traveled by the top of the second hand in 4 rotations (or 4 minutes) is:

4 rotations * 16π cm/rotation = 64π cm

So the distance traveled by the top of the second hand of a clock in 4 minutes if the hand is 8 cm long is approximately 64π cm or about 201.06 cm (when rounded to two decimal places).

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Answer:

r = 14.60

Step-by-step explanation:

r²= 9²+(23/2)²

= 9²+11.5²

= 81+132.25

r² = 213.25

r = √213.25

= 14.60 to 2d.p

Conducting a survey among the students would be the best way to determine the most popular type of vending machine.

In order to accurately determine the most popular type of vending machine, it is important to gather data from the intended audience - the students. By conducting a survey, the administrator can gather information on the types of snacks and drinks that the students prefer, as well as their pricing preferences.

This will allow the administrator to make an informed decision on which type of vending machine will be most popular and profitable for the school.

Additionally, by involving the students in the decision-making process, they may feel more invested in the vending machines and be more likely to use them, ultimately leading to a successful vending program.

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The price of the advertisement that originally costs $110 after a 15% markdown is $ 83.5.

Original price = $110

Markdown percent = 15%

Reduce in price = 15% of 110

To calculate this, we divide the percent by 100 and multiply it by the number given. Like in the above case, we divide 15 by 100 to get 0.15 and multiply it by 110.

= 0.15 * 110 = 16.5

Price after markdown = original price - reduction in price

= 110 - 16.5

= $ 83.5

Thus, the price for a quarter-page ad of the school yearbook which used to be $110 has come down to $83.5 after a 15 % markdown to attract more sponsors.

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The vertex will be at (0, -3), and the graph will be lower than the parent function by 3 units at every point. The parent function of the absolute value function is f(x) = |x|.

To shift this function 3 units down, we need to subtract 3 from the function's output (y) at every point on the graph. This can be expressed as:

f(x) = |x| - 3

The absolute value function is symmetric around the y-axis, which means that any shifts to the left or right do not affect the shape of the graph, only its position on the coordinate plane.

However, a vertical shift up or down will change the location of the vertex, the point where the graph changes direction. In this case, the vertex will be at (0, -3), and the graph will be lower than the parent function by 3 units at every point.

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a) Here is the chart showing the number of bacteria after 0 to 4 hours:

| Time (hours) | Number of bacteria |

|--------------|--------------------|

| 0 | 50 |

| 1 | 150 |

| 2 | 450 |

| 3 | 1,350 |

| 4 | 4,050 |

b) To write an expression that models the number of bacteria after a number of hours, n, we can use the formula:

In this case, the initial number of bacteria is 50, and the growth factor is 3 (since the number of bacteria triples every hour). Therefore, the expression that models the number of bacteria after n hours is:

c) To determine the number of bacteria that are present after 12 hours using the expression we derived in part b), we can substitute n = 12 into the expression:

= 26572050

The height of the building is approximately 102.3 feet, rounded to the nearest tenth.

Step 1: Draw a right triangle with Sheila's eye-height as the base, the building's height as the vertical side, and the distance between Sheila and the building as the horizontal side.

Step 2: We are given the angle of elevation (71 degrees) and the horizontal distance (33 feet). To find the vertical distance, we can use the tangent function in trigonometry. The formula is:
tan(angle) = (opposite side) / (adjacent side)

Step 3: Plug in the given values into the formula:
tan(71) = (vertical distance) / 33

Step 4: Solve for the vertical distance:
vertical distance = 33 * tan(71) ≈ 96.9 feet

Step 5: Add Sheila's eye-height to the vertical distance to find the total height of the building:
total height = eye-height + vertical distance
total height = 5.4 + 96.9 ≈ 102.3 feet

The height of the building is approximately 102.3 feet, rounded to the nearest tenth.

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The value of the x is 8.33 under the given condition that  RZ is given as 2x + 5 and TW is given as 5x - 20.

From the given question and illustrative diagram we can clearly see that
RZ = 2x + 5
TW = 5x - 20
Now, we have to find the value of 'x' if RZ = 2x + 5 and TW = 5x - 20.
Then, from the given rectangle figure, we can say  that RZ is equal to TW.
Hence equating both the equation we can  evaluate that the value of x  and the equation can be expressed in the forms of
RZ = TW
2x + 5 = 5x - 20
20 + 5 = 5x - 2x
25 = 3x
x = 25/3
x = 8.33
Then, the value of the x is 8.33.
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The market value of Sylvia Baxter's property are $68,800.00. The correct answer is (c)

To find the market value of Sylvia Baxter's property, we need to divide the assessed value by the assessment rate and then multiply by 100.

Assessed value of the home = $64,000

Assessed value of the land = $4,800

Assessment rate = 35% = 0.35 (as given in the problem)

So, the total assessed value of the property = $64,000 + $4,800 = $68,800

Now, to find the market value, we need to divide the assessed value by the assessment rate and multiply by 100:

Market value = (Assessed value / Assessment rate) x 100

Market value = ($68,800 / 0.35) x 100 = $196,571.43 (rounded to the nearest cent)

Therefore, the market value of her property is $68,800.00.

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Answer:

The median value is 45.

Step-by-step explanation:

"The median is the middle number in a sorted, ascending or descending list of numbers"

The middle number here is 45

50

Step-by-step explanation:

I put the explanation on the attachment. please see it.

Answer: 48 inches

Step-by-step explanation:

The population is 38, and the sample is 5 students.

. The population for this problem is the entire soccer team, which consists of 38 members.

b. The sample for this problem is the group of 5 students who are selected by the coach to represent the team in the Homecoming Parade.

c. One method for selecting a random sample of 5 students from the team is to use a random number generator to choose 5 numbers between 1 and 38, representing the 38 team members. The coach can then select the students who correspond to the chosen numbers. Another method is to write the names of all 38 team members on identical slips of paper, place the slips in a container, mix them up, and then randomly select 5 slips to determine the students who will participate in the parade. It is important to ensure that the selection method is truly random to avoid any bias or non-representativeness in the sample.

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To find the probability of a contestant liking cats and dogs but not rabbits, we can use the formula for calculating the probability of independent events. That is, P(A and B and not C) = P(A) * P(B) * P(not C).

So in this case, P(cats and dogs and not rabbits) = 0.1 * 0.9 * 0.4 = 0.036. Therefore, the probability of a contestant liking cats and dogs but not rabbits is 0.036 or 3.6%.

As for the most likely outcome of this contestant's preferences, we can see that 90% of the contestants like cats, so it's very likely that this contestant likes cats. However, only 10% of the contestants like dogs, so it's less likely that this contestant likes dogs.

And 60% of the contestants like rabbits, so it's even more likely that this contestant does not like rabbits. Therefore, the most likely outcome is that this contestant likes cats but does not like dogs or rabbits.

In conclusion, given the probabilities provided, we can calculate the probability of a contestant liking cats and dogs but not rabbits, and we can also determine the most likely outcome of this contestant's preferences. The independence of the events allows us to use simple probability calculations to make these determinations.

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Luna and her friend Maka decided to make sandwiches using 1/3 of a baguette. To ensure fairness, they agreed to divide the baguette equally between them. They carefully measured the baguette and cut it into two equal parts, ensuring each of them received an equal portion.

Luna and Maka then began assembling their sandwiches. They spread their preferred fillings on their respective portions of the baguette, adding layers of vegetables, meats, and condiments to create delicious sandwiches.

After completing their sandwich preparation, Luna and Maka sat down together to enjoy their culinary creations. They appreciated the taste and quality of their sandwiches, delighted by the shared experience and the equal distribution of the baguette.

As they savored each bite, Luna and Maka cherished their friendship and the simple joy of sharing a meal together. They found contentment in the realization that even the smallest things, like a shared baguette, could strengthen their bond and create lasting memories.

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The equation for the cost of a taxi ride as c = 0.75(d - 0.5) + 3.

Distance traveled refers to the total distance covered by an object or person over a certain period of time or within a given context. It can be measured in units such as meters, kilometers, miles, or any other unit of length.

Equation:

Let d be the distance travelled in kilometres, and let c be the cost in dollars. Then we can write the equation for the cost of a taxi ride as:

c = 0.75(d - 0.5) + 3

This equation takes into account the initial $3.00 fee, as well as the additional $0.75 for every 0.5km

Table:

Distance (km) Cost ($)

0.5 3.38

1 3.75

1.5 4.13

2 4.50

2.5 4.88

3 5.25

3.5 5.63

4 6.00

4.5 6.38

5 6.75

5.5 7.13

6 7.50

6.5 7.88

7 8.25

7.5 8.63

8 9.00

8.5 9.38

9 9.75

9.5 10.13

10 10.50

Graph:

The x-axis represents the distance in kilometers, and the y-axis represents the cost in dollars. We start the graph at (0, 3), and then plot a point at (0.5, 3.75), (1, 4.5), (1.5, 5.25), and so on, until we get to (10, 18). We then draw a line connecting all of these points to create a line graph.

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In order to create a sector with an area of 2 square units, we need to draw a central angle of approximately 24.4 degrees and a radius of approximately 1.49 units.

In order to create a sector with an area of 2 square units, we need to find the radius of the circle and then calculate the central angle that corresponds to an area of 2 square units.

Let's start by using the formula for the area of a circle, which is:

A = πr²

We know that the area of the circle is 7 square units, so we can write:

7 = πr²

Solving for r, we get:

r = √(7/π)

r ≈ 1.49

Now, we can use the formula for the area of a sector, which is:

A = (θ/360)πr²

where θ is the central angle in degrees.

To find the central angle that corresponds to an area of 2 square units, we can write:

2 = (θ/360)π(1.49)²

Solving for θ, we get:

θ ≈ 24.4 degrees

So, to create a sector with an area of 2 square units, we need to draw a central angle of approximately 24.4 degrees and a radius of approximately 1.49 units.

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Using this line plot, we can answer questions such as:

What is the most common weight for the puppies?

The most common weight is 3 3/4 lb, which occurs 3 times.

What is the range of weights for the puppies?

The range of weights is from 3 1/4 lb to 4 1/4 lb.

How many puppies weigh less than 4 lb?

Four puppies weigh less than 4 lb.

How many puppies weigh exactly 3 1/2 lb?

Two puppies weigh exactly 3 1/2 lb.

What is the frequency?

The number of periods or cycles per second is called frequency. The SI unit for frequency is the hertz (Hz). One hertz is the same as one cycle per second.

The line plot of the puppies' weights is in the attached image.

Each "*" represents a puppy's weight.

The horizontal axis represents the weight values, and the vertical axis represents the frequency of each weight.

Hence, Using this line plot, we can answer questions such as:

What is the most common weight for the puppies?

The most common weight is 3 3/4 lb, which occurs 3 times.

What is the range of weights for the puppies?

The range of weights is from 3 1/4 lb to 4 1/4 lb.

How many puppies weigh less than 4 lb?

Four puppies weigh less than 4 lb.

How many puppies weigh exactly 3 1/2 lb?

Two puppies weigh exactly 3 1/2 lb.

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Answer:

       To change a mixed number to an improper fraction quickly we can multiply the whole number by the denominator, add the numerator and then write that over the original denominator.

To conduct a simulated model that estimates the probability that Liang will find at least five other players to join the chess club if he asks eight players who have a 70% chance of agreeing to join.

We can use the following steps:

1. Define the variables:

  - n: the number of trials (i.e., the number of times Liang asks eight players to join)

  - p: the probability of success (i.e., the probability that a player agrees to join the club, which is 0.7)

  - k: the number of successes needed (i.e., the number of players, excluding Liang, that he needs to find to form the club, which is 5)

  - success: a counter to keep track of the number of successful trials (i.e., the number of times Liang finds at least five players to join)

2. Set the initial value of the success counter to 0.

3. Start a loop that runs n times. In each iteration of the loop:

  - Generate a random number between 0 and 1 using a random number generator.

  - If the random number is less than or equal to p, increment a "success count" variable.

  - If the success count variable reaches k, break out of the loop.

4. After the loop finishes, divide the success count variable by n to get the simulated probability that Liang will find at least five players to join the chess club.

5. Repeat the simulation multiple times (e.g., 1000 times) to obtain a distribution of simulated probabilities.

6. Calculate the mean and standard deviation of the simulated probabilities to estimate the most likely probability that Liang will find at least five players to join the chess club, and the range of probabilities that he is likely to obtain.

Note: This simulation model assumes that each player's decision to join the club is independent of the other players' decisions and that the probability of success (i.e., agreeing to join) is the same for each player. These assumptions may not always be accurate in practice.

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The limit of (sin(9x))/x as x approaches 0 is equal to 9.

To evaluate this limit analytically, we can use L'Hopital's Rule.

Taking the derivative of the numerator and denominator with respect to x, we get:lim (sin(9x))/x = lim (9cos(9x))/1as x approaches 0.

Substituting x = 0, we get:lim (sin(9x))/x = 9cos(0)/1 = 9Therefore, the limit of (sin(9x))/x as x approaches 0 is equal to 9.

We know already how to apply or make the procedures mathematically talking so this short program will eventually help you how to find logic.

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Answer:

  a) 149,270 m³

  b) 4 hours 9 minutes

Step-by-step explanation:

You want to know the volume of air in a 4 km tunnel 8 m high and 5 m wide with a semicircular cross section at the top. And you want to know the replacement time for that air if it is exchanged at 10 m³ per second.

The area of the semicircular top of the tunnel is ...

  A = π/8d²

  A = π/8·(5 m)² = 25π/8 m²

The area of the rectangular bottom of the tunnel is ...

  A = LW

  A = (5 m)(8 -2.5 m) = 27.5 m²

So the total cross sectional area of the tunnels is ...

  (25π/8 +27.5) m² ≈ 37.317477 m²

The volume of the tunnel is ...

  V = Bh

  V = (37.317477 m²)(4000 m) ≈ 149269.9 m³

The volume of the air in the tunnel is about 149269.9 m³.

At 10 m³ per second, the air will be replaced after ...

  (149269.9 m³)/(10 m³/s) = 14926.99 s ≈ 4 hours 9 minutes

The given pump takes 4 hours 9 minutes to replace the air in the entire tunnel.

__

Additional comment

This tunnel would not meet any standard of safety.

A typical building is supposed to have about 5 air exchanges per hour. That's about 21 times the rate given here. Some tunnel structures need to have the air exchanged once per minute. (Here, that would mean the wind in the tunnel is 149 mph.)

The breathing requirements of the tunnel occupants need to be considered, as well as removal of air pollutants.

There are 3600 seconds in 1 hour.

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The correct statement regarding the solution to the system of equations is given as follows:

4) (2, 1) is the solution to both lines A and B.

The system of equations in the context of this problem is defined as follows:

Replacing the second equation into the first, the value of x is obtained as follows:

-3x + 7 = x - 1

4x = 8

x = 2.

Hence the value of y is given as follows:

y = 2 - 1

y = 1.

Meaning that point (2,1) is a solution to both lines.

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The equation we can use to find the number of rows the farmer planted is 108 = 9p.

To find the remaining number of plants, we subtract 46 from 154:

154 - 46 = 108 tomato plants

Now, the farmer replants the remaining plants in rows with 9 plants in each row. To find the number of rows (p), we can use the following equation:

108 = 9p

This equation represents the total number of remaining tomato plants (108) being divided into rows with 9 plants each, resulting in the number of rows (p).

Simplifying this equation will give us the value of p, which is:

p = 12

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The total foam needed to make n cones is (n/3)πr^2h cubic inches.

The volume of a cone can be calculated using the formula:

V = (1/3)πr^2h

where r is the radius of the base, h is the height, and π is the mathematical constant pi.

In this case, the height of each cone is given as h inches, and the radius of the base is given as r inches. So, the volume of each cone can be calculated as:

V = (1/3)πr^2h

Now, let's assume that the company wants to make n cones. Then, the total amount of foam needed to make these cones would be:

Total foam needed = n × V

Substituting the expression for V, we get:

Total foam needed = n × (1/3)πr^2h

Therefore, the total foam needed to make n cones is (n/3)πr^2h cubic inches.

Note that the given values of h and r are necessary to compute the total foam required.

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The probability of Henry choosing a Milky Way and then a Snickers is 2/27.

1. First, let's find the total number of candy pieces in Henry's candy jar:
3 Snickers + 1 Reese's + 1 Twix + 2 Milky Ways + 2 Skittles Packs = 9 pieces of candy.

2. Next, we'll calculate the probability of choosing a Milky Way on the first pick:
There are 2 Milky Ways and 9 total pieces of candy, so the probability is 2/9.

3. Since Henry puts the candy back, there are still 9 pieces of candy for the second pick. Now, we'll calculate the probability of choosing a Snickers on the second pick:
There are 3 Snickers and 9 total pieces of candy, so the probability is 3/9 (or 1/3).

4. Finally, we'll multiply the probabilities of each individual event to find the probability of both events occurring together (choosing a Milky Way and then a Snickers):
(2/9) * (1/3) = 2/27

So, the probability of Henry choosing a Milky Way and then a Snickers is 2/27.

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