Katherine's hike was 4.7 hours long. She spent 1 hour and 42 minutes going uphill, which was 20% of her hike. This means that her entire hike was (1 hour and 42 minutes) / (20%) = 4.7 hours long.
To calculate this, we need to divide the amount of time spent hiking uphill (1 hour and 42 minutes) by the percentage of her hike spent going uphill (20%). 1 hour and 42 minutes is equal to 102 minutes. 102 minutes / 20% = 4.7 hours. Therefore, Katherine's hike was 4.7 hours long.
We can use the following equation to calculate the answer:
Hike time = (uphill time) / (percentage of uphill time)
Hike time = (102 minutes) / (20%) = 4.7 hours
It is important to note that the calculation can also be done using the amount of time spent going downhill as well. The amount of time spent going downhill will equal the total hike time minus the amount of time spent going uphill. In this case, the amount of time spent going downhill would equal 4.7 hours - 1 hour and 42 minutes = 2.28 hours.
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50 Points
Janey paints a block of wood with gold glitter for an art project. The block measures
8 inches by 10 inches by 20 inches.
After she's done, she decides to make two blocks by cutting through the block on the
red line. She still wants each block to be covered with gold glitter.
What is the total area of the cut surfaces she still needs to paint?
Answer the questions to find out.
1. What is the shape of each cut surface? what are its dimensions?
2. What is the area of each cut surface?
3. What is the total area Jenny needs to paint? Explain how you found your answer.
Answer:
The shape of each cut surface is a rectangle. The dimensions of each cut surface are 8 inches by 10 inches.
The area of each cut surface is 8 inches x 10 inches = 80 square inches.
Since there are two cut surfaces, the total area that Jenny needs to paint is 2 x 80 square inches = 160 square inches.
Answer: Each cut surface is a rectangle with dimensions of 8 inches by 10 inches.
The area of each cut surface is:
A = l * w
A = 8 in * 10 in
A = 80 sq in
So each cut surface has an area of 80 square inches.
To find the total area Jenny needs to paint, we need to find the combined area of both cut surfaces. Since there are two cut surfaces, we simply need to multiply the area of one cut surface by 2:
Total area = 2 * area of one cut surface
Total area = 2 * 80 sq in
Total area = 160 sq in
Therefore, Jenny needs to paint a total area of 160 square inches.
Step-by-step explanation:
a fair die is rolled. if a number 1 or 2 appears, you will receive $5. if any other number appears, you will pay $2. what is the mean value of one trial of this game?
The mean value of one trial of the given game is -$0.1667 (or -$0.17 rounded to the nearest cent).
Given, when a fair die is rolled, If a number 1 or 2 appears, you will receive $5. If any other number appears, you will pay $2.
To find the mean value of one trial of this game, we have to multiply the probability of each outcome by its associated value and sum the products together, which is expressed in the formula:
E(X) = p1 x v1 + p2 x v2 + ... + pn x vn
Where, E(X) is the expected value (or mean value) of the gamep1, p2, ..., pn are the probabilities of each outcome
v1, v2, ..., vn are the values associated with each outcome
Let the event of rolling a number 1 or 2 be called A and the event of rolling any other number be called B.p(A) = 2/6 = 1/3p(B) = 4/6 = 2/3v(A) = $5v(B) = -$2E(X) = p(A) x v(A) + p(B) x v(B) = (1/3) x 5 + (2/3) x (-2) = -0.1667
Therefore, the mean value is -$0.1667 (or -$0.17 rounded to the nearest cent).
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show that there are arbitrarily long strings of consecutive integers each divisible by a perfect square greater than 1.
To show that there are arbitrarily long strings of consecutive integers each divisible by a perfect square greater than 1,
Solution:
follow these steps:
1. Choose an arbitrary positive integer, n.
2. Define a string of consecutive integers, starting with the product of the first n+1 positive perfect squares:
S = (2^2 * 3^2 * ... * (n+1)^2).
3. The next n consecutive integers will be S+1, S+2, ..., S+n.
4. Each of these consecutive integers, S+i (where 1 <= i <= n), is divisible by a perfect square greater than 1.
Here's why:
- S is divisible by all perfect squares from 2^2 to (n+1)^2, which are greater than 1.
- S+1 is divisible by 2^2, as S = (2^2 * 3^2 * ... * (n+1)^2) is an even number and (S+1) - 1 = 2^2 * K (where K is some integer).
- S+2 is divisible by 3^2, as S = (2^2 * 3^2 * ... * (n+1)^2) is divisible by 3^2 and (S+2) - 2 = 3^2 * K (where K is some integer).
- Continuing this pattern, S+i is divisible by (i+1)^2, for all 1 <= i <= n.
Thus, we have demonstrated that there are arbitrarily long strings of consecutive integers each divisible by a perfect square greater than 1.
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Six flags Great America sells adult tickets for $68 each and children tickets for $47 each. A middle school wants to take students and teachers on a field trip to Six Flags for spring break. The school has a budget of spending at most $12000. They can also only take no more than 225 teachers and students.
The school can purchase 91 adult tickets and 41 children tickets, allowing for a total of 132 teachers and students to go on the trip within the budget of $12000.
Let's start by defining some variables to represent the quantities we're interested in: Let A be the number of adult tickets purchased. Let C be the number of children tickets purchased. Let T be the total number of teachers and students who go on the trip. To maximize the number of teachers and students while staying within budget, we can use linear programming. The objective function is N = T - A - C, where N is the number of teachers and students. The inequalities are 68A + 47C ≤ 12000 and T ≤ 225. Solving this linear program, we find that the school can purchase 91 adult tickets and 41 children tickets, allowing for a total of 132 teachers and students to go on the trip within the budget of $12000.
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the complete question :
A middle school wants to take students and teachers on a field trip to Six Flags Great America for spring break. The school has a budget of spending at most $12,000. They can also only take no more than 225 teachers and students. The adult tickets cost $68 each, and children tickets cost $47 each. How many adults and children can the school take to Six Flags within the given budget and attendance limit?
The sum of two numbers is 18. Their difference is -8. Find the two numbers.
Part A
Write a system of equations that represents the situation.
x + y =
x-y =
Part B
Solve the system of equations. Express the coordinates as decimals if necessary.
Answer:
Step-by-step explanation: is 13 bc 13-8 is 5 and 5+1313is
100 points please bell
The quadratic equation in standard form is 4x² + x + 19 = 0.
What is an equation?A mathematical definition of an equation is a claim that two expressions are equal when they are joined by the equals sign ("="). The two most well-known groups of equations in algebra are the linear equations and the polynomial equations. The phrase "equation in one variable" refers to an equation with just one variable. The following are a few crucial equation types: Linear equations, Quadratic equations, Cubic equation, and Quartic equations.
The standard form of the quadratic equation is:
ax² + bx + c = 0
The given equation is:
-4x² - 19 = x
Add 4x² on both sides of the equation:
-19 = 4x² + x
Add 19 on both sides of the equation:
4x² + x + 19 = 0
Hence, the quadratic equation in standard form is 4x² + x + 19 = 0.
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Sheldon harvests the strawberries and the tomatoes in his garden. He picks 1 1/5 kg less strawberries in the morning than in the afternoon. If Sheldon picks 2 1/3 kg in the morning, how many kilograms of strawberries does he pick in the afternoon? Explain your answer using words, pictures, or equations.
Answer:
[tex]\frac{32}{15}[/tex]
Step-by-step explanation:
afternoon=[tex]\frac{21}{3}[/tex] +[tex]\frac{11}{5}[/tex]
L.C.M=15
[tex]\frac{21+11}{15}[/tex]
[tex]\frac{32}{15}[/tex]
if a stream begins at an elevation of 600 meters and flows a distance of 200 kilometers to the ocean, what is the average gradient?
The average gradient of the stream is 0.3 meters/kilometer (m/km).
To calculate this, we need to determine the change in elevation over the distance of 200 kilometers. Therefore, the difference in elevation is 600 meters (the starting elevation) minus the elevation at the ocean (assumed to be 0 meters). Dividing this difference (600 meters) by the distance (200 kilometers) gives us the average gradient: 0.3 m/km.
It is important to remember that this is only an average, and the gradient of a stream is not constant throughout its course. Factors such as terrain, obstacles, and rainfall will all affect the gradient of the stream, making it higher or lower at certain points. It is also important to note that a negative gradient means the elevation of the stream is decreasing, while a positive gradient indicates that the elevation is increasing.
In conclusion, the average gradient of the stream beginning at 600 meters and flowing 200 kilometers to the ocean is 0.3 m/km.
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It is advertised that the average braking distance for a small car traveling at 70 miles per hour equals 120 feet. A transportation researcher wants to determine if the statement made in the advertisement is false. She randomly test drives 38 small cars at 70 miles per hour and records the braking distance. The sample average braking distance is computed as 112 feet. Assume that the population standard deviation is 25 feet. (You may find it useful to reference the appropriate table: z table or t table)
a. State the null and the alternative hypotheses for the test. H0: μ = 120; HA: μ ≠ 120 H0: μ ≥ 120; HA: μ < 120 H0: μ ≤ 120; HA: μ > 120
b. Calculate the value of the test statistic and the p-value. (Negative value should be indicated by a minus sign. Round intermediate calculations to at least 4 decimal places and final answer to 2 decimal places.)
Find the p-value. 0.05 p-value < 0.10 p-value 0.10 p-value < 0.01 0.01 p-value < 0.025 0.025 p-value < 0.05
c. Use α = 0.01 to determine if the average breaking distance differs from 120 feet.
With a p-value of less than 0.025, we have sufficient evidence to reject the null hypothesis and conclude that the average breaking distance is different from 120 feet, at the 0.01 significance level.
The p-value is a statistical measure that helps us determine the probability of obtaining a result as extreme as the one we observed, assuming that the null hypothesis is true.
In this case, the null hypothesis is that the average breaking distance is 120 feet. The alternative hypothesis is that the average breaking distance is different from 120 feet.
If the p-value is less than the level of significance (0.01 in this case), we can reject the null hypothesis in favor of the alternative hypothesis.
A p-value of less than 0.025 indicates that the probability of obtaining a result as extreme as the one we observed (or more extreme), assuming that the null hypothesis is true, is less than 0.025.
This is a relatively small probability, which provides strong evidence against the null hypothesis. Therefore, we can conclude that the average breaking distance is different from 120 feet.
It is important to note that rejecting the null hypothesis does not necessarily mean that the alternative hypothesis is true.
It simply means that the evidence suggests that the null hypothesis is unlikely to be true. Further research and analysis may be needed to confirm the alternative hypothesis.
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Error Analysis-Terrence constructed the circumscribed circle for triangle xyz. Explain Terrence's error.
Answer:
Step-by-step explanation:
Lauren leans a 16-foot ladder against a wall so that it forms an angle of 78 ∘ ∘ with the ground. how high up the wall does the ladder reach? round your answer to the nearest hundredth of a foot if necessary.
The ladder reaches the height of approximately 16.03 feet up the wall. (Rounded to the nearest hundredth of a foot)
We can use trigonometry to solve this problem. Let h be the height up the wall that the ladder reaches, and let θ be the angle that the ladder makes with the ground. We know that the length of the ladder (hypotenuse) is 16 feet and the angle θ is 78 degrees.
We can use the trigonometric function tangent (tan) to find the height h:
tan(θ) = opposite/adjacent
In this case, the opposite side is the height h, the adjacent side is the distance from the ladder to the wall (which is the same as the distance from the wall to Lauren), and the angle θ is 78 degrees. So we have:
tan(78°) = h/x
where x is the distance from the ladder to the wall. Solving for h, we get:
h = x * tan(78°)
We don't know the value of x, but we can use the fact that the ladder is 16 feet long to find it. Using the Pythagorean theorem, we have:
x^2 + h^2 = 16^2
Substituting h = x * tan(78°), we get:
x^2 + (x * tan(78°))^2 = 16^2
Simplifying, we get:
x = 16 / √(1 + tan^2(78°))
x ≈ 3.83 feet
Finally, we can substitute x into our equation for h:
h = x * tan(78°)
h ≈ 16.03 feet
Therefore, the ladder reaches approximately 16.03 feet up the wall. Rounded to the nearest hundredth of a foot, the answer is 16.03 feet.
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F=9/5C+32 ¿cual seria su inversa? ¿que temperatura en C corresponde a 100 F? ¿ Que temperatura en F corresponde a 30 C?
1. Inverse of F=9/5C+32 is C=5/9(F-32)
2. 100 F = 37.8 C
3. 30 C = 86 F
To find the inverse of
F = 9/5C+32,
we need to solve for C. First, subtract 32 from both sides of the equation to get
F-32 = 9/5C.
Then, multiply both sides by 5/9 to isolate C, giving us
C = 5/9(F-32).
This is the inverse function.
To find the temperature in Celsius that corresponds to 100 degrees Fahrenheit, we can use the inverse function. Substituting F=100 into
C = 5/9(F-32), we get
C = 5/9(100-32) = 37.8 degrees Celsius.
To find the temperature in Fahrenheit that corresponds to 30 degrees Celsius, we can use the original equation. Substituting C=30 into
F=9/5C+32,
we get
F = 9/5(30)+32 = 86 degrees Fahrenheit.
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Complete Question:
F=9/5C+32, what would be its inverse? What temperature in C corresponds to 100 F? What temperature in F corresponds to 30 C?
Olivia bought snacks for her team's practice. She bought a bag of apples for $3.19 and a 24-pack of juice bottles. The total cost before tax was $55.51. Which tape diagram could be used to represent the context if
�
x represents how much each bottle of juice costs?
The expression 24x = 55.51 - 3.19 the given condition and the number of bottle is 2.18 or 2 option D is correct
Given that,
She bought a bag of apple for $3.19 and a 24-pack of juice bottles. The total cost before tax was $55.51.
To determine the diagram could be used to represent the context if x represents how much each bottle of juice costs.
What is arithmetic?
In mathematics, it deals with numbers of operations according to the statements. There are four major arithmetic operators, addition, subtraction, multiplication, and division,
Here,
Let the cost of each juice bottle be x.
Now,
According to the question,
the expression will be
24x = 55.51 - 3.19
x= 2.18
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what would happen if 300 people were sampled instead of 200, and the confidence level remained the same?
If 300 people were sampled instead of 200, and the confidence level remained the same, it would produce a more accurate result.
Sampling means selecting the group that you will actually collect data from in your research. For example, if you are researching the opinions of students in your university, you could survey a sample of 100 students. In statistics, sampling allows you to test a hypothesis about the characteristics of a population.
This is because a larger sample size allows for a better representation of the population, providing a more accurate result. Additionally, with a larger sample size, the confidence interval of the sample would be narrower, indicating a higher level of confidence in the accuracy of the result.
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if you were going to give a speech on the average number of a grades freshmen, sophomores, juniors, and seniors got in spring 2016 at your college, which graph would be best?
Answer:
the juniors, this is because they are the juniors, which means they are the smaller ones here and the ones who need a speech of inspiration and motivation
A student solved the equation extraneous? Explain. 5/x-4 = x/x-4 and got 4 and 5 as solutions. Which, if either, of these is extraneous? Explain.
Therefore , the solution of the given problem of equation comes out to be x = 5 is a correct answer to the problem.
What is equation?Complex algorithms frequently employ variable words to demonstrate coherence between two opposing assertions. Equations are academic expressions that are used to demonstrate the equality of different academic figures. In this instance, normalization results in a + 7 rather than a separate algorithm who divides 12 onto two separate components and is able to evaluate data obtained from x + 7.
Here,
We can begin by making the provided equation simpler:
=> 5/(x - 4) = x/(x - 4)
=> 5 = x
Consequently, x = 5 is the answer to the problem.
The result of adding x = 4 to the initial equation is:
=> 5/(4 - 4) = 4/(4 - 4)
That amounts to:
=> 5/0 = 4/0
However, since division by zero is undefinable, the answer x = 4 is superfluous and does not satisfy the equation.
The result of the initial equation with x = 5 is:
=> 5/(5 - 4) = 5/(5 - 4)
That amounts to:
=> 5/1 = 5/1
As a result, x = 5 is a correct answer to the problem.
In conclusion, only one of the solutions -x = 5 is correct, and the other
-x = 4 is unnecessary because it results in a divide by zero.
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Which of the following proportions is true?
16/36 = 12/27
4/16 = 2/14
15/20 = 24/36
12/15 = 47/50
Answer:
16/36 = 12/27
at an airport restaurant, two sodas and four hamburgers cost $12.00. an order of four sodas and two hamburgers costs $9.00. how much does one hamburger cost?
At an airport restaurant, the cost of one hamburger is $2.50.
How to get the cost of one hamburger?Two sodas and four hamburgers cost $12.00, and an order of four sodas and two hamburgers costs $9.00.
To know the cost of each soda and hamburger, we need to use the equation (x and y)
Use x for soda, and use y for hamburger
Two sodas and four hamburgers cost $12.00
Then, (2 x x) + (4 x y) = 12
2x + 4y = 12
We need to divide the numbers by 2, as follows:
x + 2y = 6
four sodas and two hamburgers cost $9.00
(4 x x) + (2 x y) = 9
4x + 2y = 9
We have to substitute the "x", as follows:
4 (6-2y) + 2y = 9
24 - 8y + 2y = 9
24 - 6y = 9
24 - 9 = 6y
15 = 6y
y = 2.5
Therefore, the cost of one hamburger is $2.50.
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Please help
Graph the inequality.
-1
The solutions of the inequality are x > -1 and x<3. We can use the solutions of the inequality to plot the graph.
Define inequality?The two sides of a mathematical equation having an inequality must be equal.
We compare two values in inequality rather than using equations.
Instead of the equal sign, you can use the less-than (or less-than-or-equal-to), greater-than (or greater-than-or-equal-to), or not-equal-to signs.
Here the given inequality is -1<x<3.
Now solving this for the solutions, we get:
x > -1 and x<3.
We can use the solutions of the inequality to plot the graph.
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which pair of functions are inverses of each other?
The inverse functions of f(x) = 8x - 3 is correct as [tex]\rm g(x) = \tfrac{x + 3}{8}[/tex]. Thus, the correct option is D.
When does the inverse function come into play?
Because they allow mathematical operations to be reversed, inverse procedures are critical for solving equations.
The inverse functions of f(x) = 8x - 3 is correct as g(x) = (x + 3)/8
As,
f(x) = 8x - 3
Rewrite your term as
x = 8y − 3
Solve for y
x = 8y − 3
8y = x + 3
[tex]$ \rm y = \frac{x + 3}{8}[/tex]
Change y with g(x)
Then you have g(x) = (x + 3)/8
Thus, The inverse functions of f(x) = 8x - 3 is correct as [tex]\rm g(x) = \tfrac{x + 3}{8}[/tex]. Thus, the correct option is D.
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Ronaldo's family drove four and 6/10 killer meters from their house to get to the gas station they drove 2 and 30/100 km from the gas station to the store which expression can be used to determine the number of kilograms Ronaldo's family drove to get all together
Ronaldo's family drove a total of 6.90 kilometres to get from their house to the store.
What expression used to determine number of kilograms?To determine the total distance Ronaldo's family drove, we need to add the distance from their house to the gas station and the distance from the gas station to the store. We can write this as:
[tex]4 6/10 km + 2 30/100 km[/tex]
To add these two distances, we need to find a common denominator for the fractions. The smallest common denominator for 10 and 100 is 100, so we can convert the first distance to an equivalent fraction with a denominator of 100:
[tex]4 6/10 km = 4 60/100 km = 4.60 km[/tex]
Then we can add the two distances:
[tex]4.60 km + 2.30 km = 6.90 km[/tex]
Therefore, Ronaldo's family drove a total of 6.90 kilometres to get from their house to the store.
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Problem 4. 3 (a) Suppose ψ(r, θ, d) Ae-r/a, for some constants A and a. Find E and V(r), assuming V(r) 0 asroo (b) Do the same for ψ(r, θ, φ)--Ae-r2/a2, assuming V(0) 0
(a) The wave function (r,, d) = Ae(-r/a), with A and a constants. To determine the expected value of energy E, we must first compute |H|>, where H is the Hamiltonian operator.
H = -(2/2m) 2 + V(r) is the Hamiltonian operator for a particle in a spherically symmetric potential, where is the reduced Planck constant, m is the particle's mass, 2 is the Laplacian operator, and V(r) is the potential energy. We may assume that V(r) = 0 as r approaches infinity since the potential energy V(r) is given to be zero at infinity. As a result, the Laplacian operator in spherical coordinates is reduced to 1/r2(d/dr)(r2(d/dr)), and we obtain:[tex]< ψ|H|ψ > = ∫∫∫ ψ*(r,θ,φ) [-2/2m (1/r2)(d/dr)(r2(d/dr)) + V(r) (r,,)] dτ where d = r2 sin dr d d d[/tex] is the volume element. Using the given wave function and the simplification of the Laplacian operator,
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use det() to calculate the determinant of n100. based on this information, do you think that n100 is invertible?
If det(n100) is equal to zero, then n100 is not invertible.
However, if det(n100) is non-zero, then n100 is invertible.
Given that the determinant of a matrix is a value associated with a square matrix, we can use det() to calculate the determinant of n100, as shown below: det(n100)
Based on this information, we cannot conclude whether or not n100 is invertible.
However, we can use the following statement to determine whether or not a matrix is invertible:
A matrix is invertible if and only if its determinant is non-zero.
If det(n100) is equal to zero, then n100 is not invertible.
However, if det(n100) is non-zero, then n100 is invertible.
Therefore, the determinant is an important tool that can help us determine whether or not a matrix is invertible.
Therefore, we must calculate det(n100) to determine if n100 is invertible or not.
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The polynomial has been factored completely. What are the zeros of the function?
x2-2x-48-(x+6)(x-8)
x=6 and x=8
x=-6 and x=8
x = 6 and x = -8
x = -6 and x = -8
The zeroes of the factored polynomial as required to be determined in the task content are: x = -6 and x = 8.
What are the zeroes of the factorised polynomial?It follows from the task content that the zeroes of the completely factorised polynomial are to be determined.
Since the given polynomial is; x² - 2x - 48 which has been factorised completely to; (x + 6) (x - 8).
Ultimately, the zeroes of the Polynomial are as follows;
x + 6 = 0; x = -6.
and
x - 8 = 0; x = 8.
Conclusively, the zeroes of the polynomial are; x = -6 and x = 8.
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Determine the Surface Area of the following composite figure. Round to the nearest tenth.
i got two wrong out of 4 what am i missing??
a store clerk wants to stack shoe boxes on a shelf that is 3 ft tall. a shoebox has a volume that is 528 cubic inches and the area of the base is 96 square inches. find the height of each shoe box and determine how mnay shoe boxes the clerk can stack on the shelf
The height of each shoebox is 5.5 inches and the clerk can stack 7 shoe boxes (6 full and 1 partially filled) on the shelf.
A store clerk wants to stack shoe boxes on a shelf that is 3 ft tall.
A shoebox has a volume that is 528 cubic inches and the area of the base is 96 square inches.
Find the height of each shoebox and determine how many shoe boxes the clerk can stack on the shelf.
The volume of each shoebox.
To find the height of each shoebox, we have to know its volume and base area.
Let h be the height of the shoebox.
Volume of the shoebox is V = 528 cubic inches.
And area of the base is A = 96 square inches.
Therefore, Volume of the shoebox,
V = Ah ⇒ 528 = 96h ⇒ h = 528/96 ⇒ h = 5.5 inches.
Hence, the height of each shoebox is 5.5 inches.
We need to find how many shoe boxes the clerk can stack on the shelf.
The height of the shelf is 3 ft = 36 inches.
If the height of each shoe box is 5.5 inches, then the number of shoe boxes that the clerk can stack on the shelf can be found by dividing the total height of the shelf by the height of each box.
Therefore, the number of shoeboxes the clerk can stack on the shelf is:
No. of shoeboxes = Height of the shelf / Height of each shoebox
⇒ No. of shoeboxes = 36/5.5 = 6.54.
So, the clerk can stack 6 full shoe boxes and the 7th box can be filled partially (5.5 inches of height).
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The ____ or sender component of a network generates the data to be sent and uses a ____ component, which converts the data into signals that can be carried by a ___ medium.
In summary, the transmitter component of a network is responsible for generating the data to be sent, which is then modulated into a signal that is sent over the transmission medium. The receiver component of the network then demodulates the signal back into the original data. The transmission medium is important as it determines the type of signal that can be sent, and the type of data that can be transmitted.
The transmitter or sender component of a network generates the data to be sent and uses a modulator component, which converts the data into signals that can be carried by a transmission medium. This process allows data to be transmitted over long distances, such as from a computer to another computer.
The transmitter generates the data to be sent, which can be anything from text and files to audio and video. The modulator converts the data into a signal that can be sent over a transmission medium, such as fiber optic cables, coaxial cables, or satellite communication systems. This signal is then transmitted over the medium, where it is received by the receiver component, which then demodulates the signal back into the original data.
The transmission medium is important, as it determines the type of signal that can be sent. Fiber optic cables are capable of sending high-speed signals over long distances, while coaxial cables are ideal for shorter distances. Satellite communication systems are best for sending signals over large distances.
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Huan has $100 to spend on video games. If each video game is $40 and he pays $5 in tax, how much money does Huan have left over?
Answer: $15
Step-by-step explanation:
If he spends $80 on two games because if he was to buy three games he would be over his $100. Plus tax is $85.
solve the inequality -8x < 32 should it be reveresed
The value of x for the given inequality to justify the equation to get the desired result of the equation is x < - 4 .
Define inequality:
In mathematics, inequality refers to a statement that compares two values or expressions, indicating that one value or expression is greater than or less than the other. An inequality can be represented using symbols such as "<" (less than), ">" (greater than), "<=" (less than or equal to), ">=" (greater than or equal to), or "≠" (not equal to). For example, "2x + 3 > 5" is an inequality that states that the expression "2x + 3" is greater than "5". Inequalities are often used in algebra, calculus, and other branches of mathematics to represent relationships between variables or to solve equations.
What about equation in the relation?
In mathematics, an equation is a statement that asserts the equality of two expressions. An equation consists of two expressions, separated by an equals sign "=" and it states that the value of one expression is equal to the value of the other expression. The expressions in an equation can contain variables, constants, and mathematical operations such as addition, subtraction, multiplication, and division. Equations are used in many areas of mathematics to describe relationships between variables, to solve problems, and to make predictions. For example, the equation "x + 3 = 7" states that the value of the expression "x + 3" is equal to "7".
According to the given information:
For the following equation we have that,
⇒ - 8x < 32
⇒ -x < [tex]\frac{32}{8}[/tex]
⇒ -x < [tex]4[/tex]
⇒ x < [tex]- 4[/tex]
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suppose that a pair of dice is tossed. one die has 7 sides, the other has 5 sides. what is the expected value of the sum of the two dice?
Answer:
4 and 3
Step-by-step explanation:
1/7(1+2+3+4+.....+7)
1/7(28)
4
1/5(1+2+3+4+....+5)
1/5(15)
3
The expected value of the sum of two dice with 7 and 5 sides respectively is 11.
To calculate the expected value of the sum of two dice, we can use the formula for expected value, which is equal to the sum of all possible outcomes multiplied by their corresponding probabilities.
In this case, the possible outcomes are 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, and 12, with their corresponding probabilities being 1/35, 2/35, 3/35, 4/35, 5/35, 6/35, 5/35, 4/35, 3/35, 2/35, and 1/35 respectively.
So, the expected value of the sum of the two dice is 2*(1/35) + 3*(2/35) + 4*(3/35) + 5*(4/35) + 6*(5/35) + 7*(6/35) + 8*(5/35) + 9*(4/35) + 10*(3/35) + 11*(2/35) + 12*(1/35) = 11.
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