a connected planar graph has 9 vertices having degrees 2, 2, 2, 3, 3, 3, 4, 4, and 5. how many edges are there? how many faces are there?

Answers

Answer 1

The given connected planar graph has 15 edges and 8 faces.

To find the number of edges in a connected planar graph with the given degrees of vertices, we can use the formula known as Euler's formula. Euler's formula states that for a connected planar graph, the number of vertices (V), edges (E), and faces (F) are related by the equation V-E+F=2.

Using the given information, we can calculate the total number of vertices as 9. The sum of the degrees of these vertices is 30, which means the total number of edges can be calculated as (30/2) = 15.

To find the number of faces, we can use another formula: F = E - V + 2. Substituting the values we know, we get F = 15 - 9 + 2 = 8. Therefore, the given connected planar graph has 15 edges and 8 faces.

It's worth noting that the degrees of the vertices play an important role in determining the structure of a planar graph. In particular, the fact that all the vertices in this graph have low degree means that it is likely to have a simple and straightforward structure. By contrast, if the degrees were all high, the graph would be more complex and harder to visualize.

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Related Questions

A pitcher of juice is half empty. After 1/2 cup of juice is added, the pitcher is full. How much juice does the pitcher hold when its full?

Answers

There seems to be an error in the problem statement or some information is missing.

Let's represent the amount of juice the pitcher holds when it's full by x.

According to the problem, the pitcher is initially half empty, which means it is filled with x/2 amount of juice.

After 1/2 cup of juice is added, the pitcher becomes full, which means it is now filled with x amount of juice.

So, the amount of juice added to the pitcher is (x - x/2) + 1/2 = x/2 + 1/2.

Since this amount is equal to 1/2, we can write the equation:

x/2 + 1/2 = 1/2

Solving for x, we get:

x/2 = 0

Multiplying both sides by 2, we get:

x = 0

This means that the pitcher does not hold any juice when it's full, which is not a valid answer.

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There are 7 days in a week.
Let x represent the number of weeks and y represent the corresponding number of days.
Complete the table using the equation y=7x.
x y
5
6
7 49
8


Answers

Answer:

Step-by-step explanation:

The equation is y=7x

x      y          Calculation

5     35         y=7x, y=7*5, y=35

6     42         y=7x, y=7*6, y=42


7      49       y=7x, y=7*7, y=49

8     56          y=7x, y=7*8, y=56

If r(t) =e2t,e-2t,te2t, find T(0),r''(0), and r'(t) r''(t)

Answers

The values of T(0) = e(0) = 1, r''(0) = 8, r'(t) = 2e^(2t) - 2e^(-2t), r''(t) = 8e^(2t) + 8e^(-2t).

We are given that r(t) = e^(2t), e^(-2t), te^(2t). To find T(0), we need to evaluate the unit tangent vector T(t) at t=0. The formula for the unit tangent vector is T(t) = r'(t)/|r'(t)|, where |r'(t)| is the magnitude of r'(t).

r'(t) = 2e^(2t) - 2e^(-2t), so r'(0) = 2 - 2 = 0.

Thus, T(0) = r'(0)/|r'(0)| = 0/|0|, which is undefined.

However, since r'(0) = 0, we can use the normal vector instead to find the direction of the tangent line at t=0.

The normal vector N(0) is given by N(t) = T'(t)/|T'(t)|. To find T'(t), we differentiate r'(t) with respect to t:

r''(t) = 4e^(2t) + 4e^(-2t)

So, r''(0) = 4 + 4 = 8. Thus, T'(0) = r''(0)/|r'(0)| = 8/0, which is undefined.

To find r'(t), we can differentiate r(t) using the product rule:

r'(t) = 2e^(2t), -2e^(-2t), 2te^(2t) + e^(2t)

To find r''(t), we can differentiate r'(t):

r''(t) = 4e^(2t), 4e^(-2t), 4te^(2t) + 4e^(2t)

Thus, r'(t) = 2e^(2t) - 2e^(-2t), and r''(t) = 8e^(2t) + 8e^(-2t).

Therefore, T(0) = e^(0) = 1, r''(0) = 8, r'(t) = 2e^(2t) - 2e^(-2t), and r''(t) = 8e^(2t) + 8e^(-2t).

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what type of data should be collected to compare the likelihoods of two candidates winning their elections when the candidates are running in different elections?

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To compare the likelihoods of two candidates winning their elections when they are running in different elections, it is important to collect relevant data such as historical voting patterns, demographic information, campaign funding, candidate popularity, and election-specific factors.

1. This data will allow for a comprehensive analysis that considers various factors influencing the outcomes of elections and enables a fair comparison between the candidates.

2. When comparing the likelihoods of two candidates winning their elections in different contexts, several types of data should be collected and analyzed. Firstly, historical voting patterns and trends in the respective regions where the elections are taking place are essential. This data can provide insights into the voting behavior of the electorate and help identify any consistent patterns or shifts in support for particular candidates or parties.

3. Demographic information is another crucial factor. Understanding the composition of the electorate in terms of age, gender, ethnicity, socioeconomic status, and other relevant factors can provide valuable insights into the candidate's potential support base and help gauge the likelihood of their success.

4. Campaign funding is an important indicator of a candidate's resources and support. Analyzing the financial contributions and expenditures of each candidate can provide insights into their campaign strategies, level of organization, and potential impact on the electorate.

5. Candidate popularity and public opinion data are also crucial. Collecting and analyzing polling data, surveys, and public sentiment from reputable sources can help assess the candidates' popularity, public perception, and the overall sentiment towards their campaigns.

6. Lastly, it is important to consider election-specific factors. Each election may have unique circumstances such as political climate, incumbent advantage, key issues, or local dynamics that can significantly influence the outcome. Gathering information on these specific factors and their potential impact on the candidates' chances of winning is important for a comprehensive analysis.

7. By collecting and analyzing this diverse range of data, one can make a more informed comparison of the likelihoods of two candidates winning their elections, even when they are running in different contexts. It is important to note that while data analysis provides valuable insights, election outcomes can still be influenced by unforeseen events, changing circumstances, and individual voter decisions.

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Find the volume of this object.
Use 3 for π.
Volume of a Cylinder
V=πr2h
5 ft
4 ft
5 ft
Volume of a Rectangular Prism V = lwh
5 ft
V ≈
9 ft

Answers

The volume of the object is 285 cubic feet based on the individual volume of cylinder and rectangular prism.

We will calculate the volume of each shape individually followed by their addition.

To calculate the volume of cylinder, we will find radius.

Radius = diameter/2

Radius = 4/2

Radius = 2 ft

Volume of cylinder = πr²h, where r is radius and h is height. Keep the values in formula -

Volume of cylinder = 3 × 2² × 5

Take square and multiply the digits

Volume of cylinder = 60 cubic feet

Volume of rectangular prism = l × w × h, where l is length, w is width and h is height

Volume of rectangular prism = 5 × 5 × 9

Volume = 225 cubic feet

Total volume = 60 + 225

Total volume = 285 cubic feet

Hence, the volume of object is 285 feet.

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Which of the following represents a correct sequence of steps in the "conventional" research model? A) Data analysis, hypothesis formation, research design, data collection B) Research design, hypothesis formation, data collection, data analysis C) Data collection, research design, hypothesis formation, data analysis D) Hypothesis formation, research design, data collection, data analysis

Answers

This option represents a correct sequence of steps in the conventional research model, starting with forming a hypothesis, then designing the research, followed by collecting data, and finally analyzing the data.

The correct sequence of steps in the "conventional" research model is D) Hypothesis formation, research design, data collection, data analysis. The first step is to form a hypothesis or a tentative explanation for the phenomenon being studied. The next step is to design the research study to test the hypothesis. This includes selecting the sample, determining the variables to measure, and deciding on the research methods.

Once the research design is finalized, data collection can begin. This involves gathering data using various techniques such as surveys, interviews, or experiments. Finally, data analysis is performed to examine the data and determine if the results support or refute the hypothesis.
Your answer: D) Hypothesis formation, research design, data collection, data analysis


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help need this asap!

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The surface area of the sphere is 1133.54cm² and sinθ  = 5/13, cosθ = 12/13 and tan θ = 5/12 respectively.

What is the surface area of a sphere?

The surface area of a sphere is defined as the region covered by its outer surface in three-dimensional space.  A Sphere is a three-dimensional solid having a round shape, just like a circle. The formula of total surface area of a sphere in terms of pi (π) is given by:

S.A = 4πr²

In the given question;

diameter = 19cmradius = ?

radius = diameter / 2

radius = 19 / 2

radius = 9.5cm

The surface area = 4 * 3.14 * 9.5²

S.A = 1133.54cm²

17.

To find the value of sinθ, cosθ and tanθ, we need to apply trigonometric ratio;

sinθ = opposite / hypothenuse

hypothenuse = ?

Using Pythagorean theorem;

x² = 5² + 12²

x = 13

sinθ = 5/13

cosθ = 12/13

tan θ = 5/12

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according to the information that comes with a certain prescription drug, when taking this drug, there is a 23% chance of experiencing nausea (n) and a 52% chance of experiencing decreased sexual drive (d). the information also states that there is a 12% chance of experiencing both side effects. what is the probability of experiencing neither of the side effects?

Answers

the probability of experiencing neither side effect is 0.37 or 37%.let's denote the probability of experiencing nausea by P(n) and the probability of experiencing decreased sexual drive by P(d). We know that:

P(n) = 0.23
P(d) = 0.52
P(n ∩ d) = 0.12

We want to find the probability of experiencing neither side effect, which can be denoted by P(~n ∩ ~d), where ~n and ~d represent the complements of nausea and decreased sexual drive, respectively.

We can use the formula for the probability of the union of two events to find P(~n ∪ ~d):

P(~n ∪ ~d) = 1 - P(n ∪ d)

We know that P(n ∪ d) = P(n) + P(d) - P(n ∩ d), so we can substitute the given values to get:

P(n ∪ d) = 0.23 + 0.52 - 0.12 = 0.63

Therefore,

P(~n ∪ ~d) = 1 - 0.63 = 0.37

So the probability of experiencing neither side effect is 0.37 or 37%.

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If the probability that the Islanders will beat the Rangers in a game is 83%, what is the probability that the Islanders will win at most two out of six games in a series against the Rangers? Round your answer to the nearest thousandth.

Answers

The probability that the Islanders will win at most two out of six games in a series against the Rangers is approximately 0.107, or 10.7%

We have,

This is a binomial probability problem with n = 6 trials and p = 0.83 probability of success (Islanders winning) in each trial.

We want to find the probability of winning at most 2 games, which means we need to calculate the probability of winning 0, 1, or 2 games and add them up.

Using the binomial probability formula, the probability of winning exactly k games out of n is:

P(k) = (n choose k) x p^k x (1 - p)^{n-k}

where (n choose k) is the binomial coefficient.

Using this formula.

P(0) = (6 choose 0) x 0.83^0 x 0.17^6 = 0.001

P(1) = (6 choose 1) x 0.83^1 x 0.17^5 = 0.015

P(2) = (6 choose 2) x 0.83² x 0.17^4 = 0.091

The probability of winning at most 2 games.

P(0 or 1 or 2)

= P(0) + P(1) + P(2)

= 0.107

Therefore,

The probability that the Islanders will win at most two out of six games in a series against the Rangers is approximately 0.107, or 10.7%

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Find the limit. Use l'Hospital's Rule
lim θ→π/2
1 − sin(θ)/
1 + cos(6θ)

Answers

Answer: To apply l'Hospital's Rule, we need to take the derivative of the numerator and denominator separately with respect to θ.

Taking the derivative of the numerator:

d/dθ [1 - sin(θ)] = -cos(θ)

Taking the derivative of the denominator:

d/dθ [1 + cos(6θ)] = -6 sin(6θ)

Now we can apply l'Hospital's Rule by taking the limit of the ratio of the derivatives:

lim θ→π/2 (-cos(θ)) / (-6 sin(6θ))

When θ approaches π/2, cos(θ) approaches 0 and sin(6θ) approaches 1. Therefore, the limit simplifies to:

= 0 / (-6)

= 0

Hence, the limit of (1 - sin(θ)) / (1 + cos(6θ)) as θ approaches π/2 is 0.

5. Show that the functions y=2*+³ and y=8•2* are equivalent using the laws of exponents.

Answers

The functions y = 8•2ˣ and y = 8•2ˣ are equivalent using the laws of exponents

Showing that the functions are equivalent using the laws of exponents.

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

y=2*+³ and y=8•2*

Express properly

So, we have

y = 2ˣ ⁺ ³ and y=8•2ˣ

When the first function expression is expanded, we have

y = 2ˣ * 2³ and y=8•2ˣ

Evaluate the exponent

y = 2ˣ * 8 and y=8•2ˣ

So, we have

y = 8•2ˣ and y = 8•2ˣ

hence, the functions are equivalent using the laws of exponents

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Solve for x round all answers to the nearest tenth

Answers

Answer: 4.5

Step-by-step explanation: We can find the answer to this using toa (Tanjent). We’d start with tan(75)= 17/x. From here we’d multiply both sides by x to get xtan(75) = 17. Now we’d just have to divide both sides by tan(75) to get 4.5.

Need help solving this please

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The average rate of change in the time it takes sound to travel 1 kilometer is 2.995 seconds.

Given that, the time t(in seconds) it takes for sound to travel 1 kilometer can be modeled by t=1000/(0.6T+331), where T is the air temperature (in degree Celsius)

1) Given that, you hear the thunder 2.9 seconds later.

Here, 2.9=1000/(0.6T+331)

2.9(0.6T+331)=1000

1.74T+959.9=1000

1.74T=1000-959.9

1.74T=40.1

T=40.1/1.74

T=23.045° Celsius

2) Here, T=0° Celsius and T=10° Celsius

2.9=1000/(0.6T+331)

t=1000/(0.6×0+331)

t=1000/331

t=3.02 seconds

Where, T=10

t=1000/(0.6×10+331)

t=1000/337

t=2.97

So, average time = (3.02+2.97)/2

= 2.995 seconds

Therefore, the average rate of change in the time it takes sound to travel 1 kilometer is 2.995 seconds.

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Nina planted 24 pink and purple tulips. If 1/3 of the tulips were pink, how many pink tulips were planted?

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Nina planted 24 pink and purple tulips. If 1/3 of the tulips were pink. Nina planted 8 pink tulips and 16 purple tulips.

Nina planted a total of 24 pink and purple tulips. Given that 1/3 of the tulips were pink, we can use this information to determine the number of pink tulips planted.

To find the number of pink tulips, we need to multiply the total number of tulips by the fraction that represents the proportion of pink tulips. In this case, the fraction that represents the proportion of pink tulips is 1/3, which can also be expressed as 8/24 (since 1/3 is equivalent to 8/24).

To find the number of pink tulips, we can multiply the total number of tulips (24) by the fraction 8/24, which gives us the answer:

Number of pink tulips = 24 x 8/24 = 8

Therefore, Nina planted 8 pink tulips. We can also find the number of purple tulips by subtracting the number of pink tulips from the total number of tulips, which gives us:

Number of purple tulips = 24 - 8 = 16

So, Nina planted 8 pink tulips and 16 purple tulips.

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the most commonly shaped base in pin curls is the _____ base. A. Arc base. B. Rectangular base. C. Panel base.

Answers

The most commonly shaped base in pin curls is the rectangular base.

This is the main answer to your question. An explanation for this is that the rectangular base is versatile and can be used for creating various sizes of curls. Additionally, it allows for easy control of the curl direction. In conclusion, when creating pin curls, the rectangular base is the most commonly used due to its versatility and ease of use.


The arc base, also known as the half-moon or C-shape base, is the most popular base shape for pin curls because it allows for better distribution of the hair and provides more natural-looking curls. This shape helps prevent splits in the finished hairstyle, ensuring a smoother and more cohesive appearance.

In pin curls, the arc base is the most commonly used base shape due to its ability to create natural-looking curls and prevent splits in the hairstyle.

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cut out your net. fold along the lines. tape the edges together to form a solid. how many faces meet at each vertex?

Answers

In a net of a solid, the number of faces meeting at each vertex can be determined by examining the net and counting the number of lines that meet at each vertex. Each line corresponds to an edge of a face, so the number of lines meeting at a vertex is equal to the number of faces meeting at that vertex.

For example, if we consider a cube net, we can see that three faces meet at each vertex. Therefore, a cube has three faces meeting at each vertex.

Similarly, for other solids, we can count the number of faces meeting at each vertex by examining the net. For example, for a regular tetrahedron, four faces meet at each vertex; for a regular octahedron, four faces meet at each vertex; for a regular dodecahedron, three faces meet at each vertex; and for a regular icosahedron, five faces meet at each vertex.

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there is a number that if you subtract 3 from it first and then divide that total by 8, you get 4. What is the number?

Answers

A number which is subtracted by 3 from it first and the total then divided by 8, which results in 4 is 35

Let's the number we're trying to find be "x".

So, according to the problem, if we subtract 3 from x first, we get,

x - 3

Then, if we divide that total by 8, we get 4:

(x - 3) / 8 = 4

Now, we can solve for x by isolating it on one side of the equation. First, we can multiply both sides of the equation by 8:

x - 3 = 32

x = 35

So, the number is 35

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Pls hurry 50 points and brainly

Answers

Answer:

A) d=120 x m

Step-by-step explanation:

This equation expresses the linear relationship between the total cost of Jake's guitar lessons (d) and the number of months he takes lessons (m). The constant of proportionality in this equation is 120, which is the monthly cost of the lessons. To find the total cost of the lessons, we simply multiply the monthly cost by the number of months.

One cup is equal to 14. 4375 in^3. If a 1-cup measuring cylinder has a radius of 2 in what is its height

Answers

The height of the 1-cup measuring cylinder with a radius of 2 inches is approximately 1.1508 inches.

The formula for the volume of a cylinder is V = πr^2h, where V is the volume, r is the radius, and h is the height.

We know that 1 cup is equal to 14.4375 in^3. So, we can set up an equation:

14.4375 = π(2)^2h

Simplifying, we get:

14.4375 = 4πh

Dividing by 4π, we get:

h = 14.4375 / (4π) ≈ 1.1508 inches

Therefore, the height of the 1-cup measuring cylinder with a radius of 2 inches is approximately 1.1508 inches.

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I need the answer to this. Giving brainliest + extra points!

Answers

The answer is 20 have a good day

You can think of an array as a collection of variables contained within a single variable.a. Trueb. False

Answers

The correct answer is option A - True. An array is a data structure in programming that allows you to store a collection of values of the same data type in a single variable.

Each value is assigned an index number, starting from 0, which represents its position in the array.  Arrays are useful in programming because they allow you to store and manipulate multiple values using a single variable. This can help simplify code and make it more efficient.

For example, if you wanted to store the grades of 10 students in a program, you could create an array of 10 elements and assign each grade to a specific index in the array.  In addition to storing data, arrays can also be used to perform calculations and manipulate data.

For example, you could use a loop to iterate through an array and calculate the average of all the values stored in the array. Overall, arrays are a powerful tool in programming that can help you organize and manipulate data.

By thinking of an array as a collection of variables contained within a single variable, you can better understand how arrays work and how to use them effectively in your programs.

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The vectors x and y are called perpendicular if x+y = 0. Find the vector perpendicular to [4, -2, -3]. Answer should be in the form: [ ] s + [ ] t.

Answers

Thus,  the vector perpendicular to [4, -2, -3] can be represented as [2]s + [-2]t.

The statement about the vectors being perpendicular if x + y = 0 is incorrect.

Two vectors are called perpendicular if their dot product is 0, not their sum.

To find a vector perpendicular to [4, -2, -3], you can use the cross product, which is calculated as follows:

Let the perpendicular vector be [a, b, c] = [u]s + [v]t. We need to find the values of a, b, and c such that the dot product of [4, -2, -3] and [a, b, c] is 0:
4a - 2b - 3c = 0

Since you're looking for an answer in the form of [ ]s + [ ]t, we can represent the perpendicular vector as:
[a, b, c] = [u]s + [v]t

An example of a perpendicular vector to [4, -2, -3] is [2, -2, 4]. We can write this as:
[2, -2, 4] = [2]s + [-2]t

This means the vector perpendicular to [4, -2, -3] can be represented as [2]s + [-2]t.

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ILL MARK BRAINLIEST FOR WHOEVER ANSWRS THE QUESTIONS!! ITS ALL WRITTEN ON THE PIC!
TAKE UR TIME

-Thanksxx

Answers

Answer: (50, -40)

Step-by-step explanation:

You can find the slope if you want, but this is pretty simple to find just by noticing that the point C is directly in the middle of A + B.

Please mark brainliest!!

using the substitution u(x) = y + x, solve the differential equation dy dx = (y + x) 2 .

Answers

you get 15 because if you solve it you gotta add and then subtract like terms and then solve it and so its 15 hope it helps

you invest $3000 in an account that pays simple interest of 4or 30 years. question content area bottom part 1 the amount of money you'll have at the end of 30 years is

Answers

If you were to invest in an account that compounds interest annually or even monthly, the total amount of money you'll have at the end of 30 years would be significantly higher.

If you invest $3000 in an account that pays simple interest of 4% for 30 years, the amount of money you'll have at the end of 30 years can be calculated using the simple interest formula:
Interest = Principal x Rate x Time
In this case, Principal = $3000, Rate = 4%, and Time = 30 years
Interest = 3000 x 0.04 x 30 = $3600
Therefore, the total amount of money you'll have at the end of 30 years will be the sum of the principal and interest:
Total Amount = Principal + Interest = $3000 + $3600 = $6600
It's important to note that the interest earned in a simple interest account does not compound over time, meaning you earn the same fixed interest rate each year. If you were to invest in an account that compounds interest annually or even monthly, the total amount of money you'll have at the end of 30 years would be significantly higher.

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What is the coefficient of x² in the
expansion of (3x - 1)5 ?

A) 270
B) 15
C) -9
D) -90

Answers

The coefficient of x² in the expansion of (3x - 1)5  IS: D) -90.

How to find the  coefficient of x²?

Make use of  the binomial theorem formula to find the coefficient of x².

(a + b)ⁿ = Σ[n choose k] [tex]a^(n-k) * b^k[/tex]

Where:

a represent 3x

b represent -1

n represent  5

k represent 0, 1, 2, 3, 4, 5

n choose k represents  binomial coefficient,

So,

(3x - 1)⁵ = Σ[5 choose k] [tex](3x)^(5-k) * (-1)^k[/tex]

= (3x)⁵ - 5(3x)⁴ + 10(3x)³ - 10(3x)² + 5(3x) - 1

Thus:

-10(3x)².

-10*3²

= -90

Therefore the coefficient of x² is option D.

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lamar built a large wooden storage box. the box was in the shape of a rectangular prism, as shown below. he covered all the sides of the box with special wallpaper that cost a total of . how much did the wallpaper cost per square foot?

Answers

Without knowing the total cost of the wallpaper or the dimensions of the rectangular prism, it is not possible to determine the cost of the wallpaper per square foot.

To calculate the cost per square foot, we would need to know the total cost of the wallpaper and the total area covered by the wallpaper. Since we do not have this information, we cannot determine the cost per square foot.

In summary, the cost of the wallpaper per square foot cannot be determined without knowing the total cost of the wallpaper and the dimensions of the rectangular prism that Lamar built.

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A bag contains 3 basketballs, 10 baseballs, 7 golf balls, and 5 footballs. A ball is chosen at random, not replaced, then another is chosen. Find each probability.

Answers

The probabilities are P(a golf ball then a basketball) is 0.0451, P(a football then a baseball) is 8.33%, P(basketball, then not a football) is 0.0864 and  P(two baseballs) is 0.15.

For the first probability, we want to find the probability of drawing a golf ball first and a basketball second. There are a total of 25 balls in the bag, so the probability of drawing a golf ball first is 3/25. After drawing a golf ball, there are 22 balls left in the bag, including 3 basketballs.

Therefore, the probability of drawing a basketball second is 7/22. Since we want both events to occur, we multiply the probabilities together to get:

P(a golf ball then a basketball) = 3/23 * 7/22 ≈ 0.0451

For the second probability, we want to find the probability of drawing a football first and a baseball second. There are a total of 25 balls in the bag, so the probability of drawing a football first is 5/25.

After drawing a football, there are 24 balls left in the bag, including 10 baseballs. Therefore, the probability of drawing a baseball second is 10/24. Since we want both events to occur, we multiply the probabilities together to get,

P(a football then a baseball) = 5/25 * 10/24

= 1/12

= 0.0833

In percentage it will be 8.33%.

For the third probability, we want to find the probability of drawing a basketball first and then any ball that is not a football. There are a total of 25 balls in the bag, so the probability of drawing a basketball first is 3/25.

After drawing a basketball, there are 24 balls left in the bag, including 5 footballs. Therefore, the probability of not drawing a football second is (24-5)/24 = 19/24. Since we want both events to occur, we multiply the probabilities together to get,

P(basketball, then not a football) = (3/25) * (1 - 5/24)

= 0.0864

For the fourth probability, we want to find the probability of drawing two baseballs. There are 10 baseballs in the bag, so the probability of drawing a baseball first is 10/25. After drawing a baseball, there are 9 baseballs left in the bag out of a total of 24 balls.

Therefore, the probability of drawing another baseball second is 9/24. Since we want both events to occur, we multiply the probabilities together to get:

P(two baseballs) = 10/25 * 9/24

= 3/20

= 0.15

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In Fechner's Law as one variable increases arithmetically, the other variable increases ____.
a. arithmetically
b. geometrically
c. metaphysically
d. mathematically
e. psychophysically

Answers

In Fechner's Law, as one variable increases arithmetically, the other variable increases geometrically.

In Fechner's Law, as one variable increases arithmetically, the other variable increases: b. geometrically.

Fechner found in his research that different people have different sensitivities to certain stimuli. For example, the ability to see differences in light can affect the quality of a person's vision. It has also been noted that people are sensitive to changes in stimuli due to emotional impact. He used this to create another version of Weber's law, which he called die Maß formel, or "measurement formula." Fechner's law states that the force of thought is proportional to the logarithm of the force.

If the intensity of the stimulus is tripled (eg 3×1), the sensitivity doubles from its original value (eg 1+1).

If the intensity of the stimulus is tripled again (eg 3×3×1), the corresponding sensitivity will be three times its original value (eg 1+1+1).

So, for the stimulus intensity to double, the perceived intensity only increases.

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The police can determine the speed a car was traveling from the length of the skid marks it leaves. The function they use is S=f(L)=2sqrt(5L) where S is speed (mph) and L is the length of the skid marks (feet).
a)If skid marks of length 320 feet are measured, what was the speed of the car?
b)Find a formula for the inverse function.
c)If the car had been traveling at 50 mph, how long would the skid marks be?

Answers

part (a) is that the speed of the car was 80 mph.

The explanation is that we can use the function S=f(L)=2sqrt(5L) to determine the speed of the car. Plugging in L=320, we get S=2sqrt(5*320)=80 mph.
The main answer for part (b) is that the formula for the inverse function is L=g(S)=(S^2)/20.
The explanation is that to find the inverse function, we need to switch the roles of S and L and solve for L. Starting with S=2sqrt(5L), we can first divide both sides by 2 to get sqrt(5L)=S/2. Then, we square both sides to get 5L=(S^2)/4. Finally, we solve for L to get L=g(S)=(S^2)/20.

The main answer for part (c) is that the skid marks would be 200 feet long.

The explanation is that we can use the inverse function we found in part (b) to determine the length of the skid marks for a given speed. Plugging in S=50, we get L=(50^2)/20=1250/20=62.5 feet. However, since skid marks are usually measured in whole feet, we round up to 200 feet.

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