You are schools you are a school supply shopping in together as a package of six pink pencils for 250 how much does each pencil cost

Answers

Answer 1

Answer:

41.67 dollars

Step-by-step explanation:

because 250/6= 41.6666666667

that rounded is 41.67 dollars

Answer 2
41.67
Explaining: i used a calculator

Related Questions

Give a parameterization for the ellipse 4x^2+9y^2=36 that begins at the point (3,0) and traverses once in a counterclockwise manner.

Answers

The parameterization of the ellipse in a counterclockwise manner is x = 3cos(t) y = 2sin(t) where t varies from 0 to 2π.

One common way to parameterize an ellipse is to use trigonometric functions such as sine and cosine. We can write the equation of the ellipse as:

4x² + 9y² = 36

We can then use the following parameterization:

x = 3cos(t) y = 2sin(t)

where t is the parameter that varies between 0 and 2π, traversing the ellipse once in a counterclockwise manner.

To see why this parameterization works, let's substitute x and y into the equation of the ellipse:

4(3cos(t))² + 9(2sin(t))² = 36

Simplifying this equation gives:

36cos²(t) + 36sin²(t) = 36

Which is true for any value of t. This shows that our parameterization does indeed describe the ellipse 4x² + 9y² = 36.

Furthermore, we can see that when t=0, we get x=3 and y=0, which is the starting point (3,0). As t varies from 0 to 2π, x and y will trace out the ellipse exactly once in a counterclockwise manner.

Therefore, the parameterization of the ellipse 4x² + 9y² = 36 that begins at the point (3,0) and traverses once in a counterclockwise manner is:

x = 3cos(t) y = 2sin(t)

where t varies from 0 to 2π.

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true/false. triangulation can be used to find the location of an object by measuring the angles

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True. Triangulation can be used to find the location of an object by measuring the angles.

Triangulation is a method used to determine the location of an object by measuring the angles between the object and two or more reference points whose locations are known.

This method is widely used in surveying, navigation, and various other fields.

By measuring the angles, the relative distances between the object and the reference points can be determined, and then the location of the object can be calculated using trigonometry.

Triangulation is commonly used in GPS systems, where the location of a GPS receiver can be determined by measuring the angles between the receiver and several GPS satellites whose locations are known.

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Consider selecting two elements, a and b, from the set A = {a, b, c, d, e}. List all possible subsets of A using both elements. (Remember to use roster notation. ie. {a, b, c, d, e}) List all possible arrangements of these two elements.

Answers

Possible subsets of A using two elements are:

{a, b}, {a, c}, {a, d}, {a, e},

{b, c}, {b, d}, {b, e},

{c, d}, {c, e},

{d, e}

Possible arrangements of these two elements are:

ab, ac, ad, ae,

bc, bd, be,

cd, ce,

de

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Discussion Topic You can identify sample spaces for compound events using organized lists, tables, and tree diagrams. Which of the three methods do you find easiest to use? Which method is the most helpful? Why? Use the Internet or another resource to find the definition of the Fuilidamental Counting Principle. What does this principle state? How can the principle be used to help you identify a sample space for a compound event? What are the limitations of using the Fundamental Counting Principle when determining the probability of an outcome? Support your answers with an example​

Answers

I find organized lists to be the easiest method to use to identify sample spaces for compound events. This is because organized lists are the most straightforward way to list all of the possible outcomes of an event.

What is Fundamental Counting Principle?

Tables and tree diagrams can be helpful as well, but they can be more difficult to create and interpret.

The Fundamental Counting Principle states that if there are n ways to do one thing, and m ways to do another thing, then there are n × m ways to do both things. This principle can be used to help identify a sample space for a compound event by multiplying the number of ways each event can occur. For example, if you are rolling a die and flipping a coin, there are 6 ways to roll the die and 2 ways to flip the coin. Therefore, there are 6 × 2 = 12 possible outcomes of the compound event.

The Fundamental Counting Principle is a useful tool for identifying sample spaces, but it does have some limitations. One limitation is that it only applies to events that are independent. Independent events are events where the outcome of one event does not affect the outcome of the other event. For example, the outcome of drawing a card from a deck does affect the outcome of drawing another card from the deck. In this case, the Fundamental Counting Principle cannot be used to determine the sample space.

Another limitation of the Fundamental Counting Principle is that it does not take into account the probability of each outcome. The probability of an outcome is the likelihood that the outcome will occur. For example, the probability of rolling a 6 on a die is 1/6. The probability of flipping a coin and getting heads is 1/2. The probability of rolling a 6 and flipping a coin and getting heads is 1/6 × 1/2 = 1/12.

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The express bus from Dublin to Belfast takes x mins the standard bus takes 29 mins longer.
write down an expression for the time the standard bus takes.

The airplane takes half the time the express bus takes.
write down an expression for the time the airplane takes.

Answers

The standard bus takes x + 29 minutes and the airplane takes x / 2 minutes.

The express bus from Dublin to Belfast takes x minutes, and the standard bus takes 29 minutes longer.

To find the time the standard bus takes, we simply add 29 minutes to the time the express bus takes.

The expression for the time the standard bus takes is:
Standard bus time = x + 29
The airplane takes half the time the express bus takes.

To find the time the airplane takes, we divide the time the express bus takes by 2.

The expression for the time the airplane takes is:
Airplane time = x / 2.

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(6 points) let s be the relation on the set r (real numbers) defined by xsy, if and only if x −y is an integer. prove that s is an equivalence relation on r.

Answers

The relation s on the set of real numbers is an equivalence relation.

To prove that s is an equivalence relation on R, we must show that it satisfies the three properties of an equivalence relation: reflexivity, symmetry, and transitivity.

Reflexivity: For any real number x, x - x = 0, which is an integer. Therefore, x is related to itself by s, and s is reflexive.

Symmetry: If x and y are real numbers such that x - y is an integer, then y - x = -(x - y) is also an integer. Therefore, if x is related to y by s, then y is related to x by s, and s is symmetric.

Transitivity: If x, y, and z are real numbers such that x - y and y - z are integers, then (x - y) + (y - z) = x - z is also an integer. Therefore, if x is related to y by s and y is related to z by s, then x is related to z by s, and s is transitive.

Since s satisfies all three properties of an equivalence relation, we conclude that s is indeed an equivalence relation on R.

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As a reward, Coach Little gives his students free tickets to Skate World. The number of tickets each student receives is constant. The table shows how many students were chosen to receive rewards and how many tickets were passed out each day. Number of Students Rewarded Number of Tickets 3 6 2 4 6 X 1 2 5 10 How many tickets were passed out when the teacher rewarded 6 students? A. 3 tickets. B. 8 tickets. C. 9 tickets. D. 12 tickets​

Answers

when the teacher rewarded 6 students, the total number of tickets passed out would be 6 students multiplied by 2 tickets per student, which equals 12 tickets.

To find out how many tickets were passed out when the teacher rewarded 6 students, we need to examine the given table. We notice that the number of tickets passed out is constant for each day, meaning that the same number of tickets is given to each student.

From the table, we can see that when 3 students were rewarded, 6 tickets were passed out. Similarly, when 2 students were rewarded, 4 tickets were passed out. When 5 students were rewarded, 10 tickets were passed out.

Since the number of tickets passed out is constant for each day, we can determine the number of tickets per student by finding the average number of tickets per student across different days.

Calculating the average, we get (6 + 4 + 10) / (3 + 2 + 5) = 20 / 10 = 2 tickets per student.

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Find the limit, if it exists,
Lim (x, y) -> (0, 0) xy/(√x^2+y^2)
to examine lim (x, y) → (0, 0) xy/(√x^2+y^2), first approach (0, 0) along the x-axis. on this path, all points have _________

Answers

The limit of xy/(√[tex]x^2+y^2[/tex]) as (x, y) approaches (0, 0) does not exist.

On the x-axis, all points have y = 0. Therefore, the expression xy/(√[tex]x^2+y^2[/tex]) reduces to 0/|x|, which is equal to 0 for x ≠ 0 and undefined at x = 0.

Next, let's approach (0, 0) along the y-axis. On this path, all points have x = 0. Therefore, the expression xy/(√[tex]x^2+y^2[/tex]) reduces to 0/|y|, which is equal to 0 for y ≠ 0 and undefined at y = 0.

Since the limit of the expression along the x-axis and y-axis are different, the limit at (0, 0) does not exist.

To prove this, we can also use polar coordinates.

Let x = r cosθ and y = r sinθ, then the expression becomes:

lim (r, θ) -> (0, 0) [tex]r^2[/tex] cosθ sinθ / r

which simplifies to:

lim (r, θ) -> (0, 0) r cosθ sinθ

This limit does not exist, as the value of r cosθ sinθ depends on the angle θ. For example, when θ = 0, r cosθ sinθ = 0, but when θ = π/4, r cosθ sinθ = [tex]r^2[/tex]/2.

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To find the limit, if it exists, of Lim (x, y) → (0, 0) xy/(√x^2+y^2), we first examine the limit as we approach (0, 0) along the x-axis. When we follow this path,it helps to analyse the limit.

On the x-axis, y=0 for all points. Therefore, the limit can be examined as lim (x, 0) → (0, 0) x(0)/(√x^2+0^2). Simplifying, we get lim (x, 0) → (0, 0) 0/|x|. As we approach 0 from both positive and negative sides of the x-axis, the denominator |x| approaches 0. However, the numerator remains 0. Thus, the limit is 0. Therefore, all points on the x-axis approach 0 as we approach (0, 0).

that is,  Lim (x, y) → (0, 0) x(0)/(√x^2+0^2) = Lim (x, y) → (0, 0) 0/(√x^2)

As x approaches 0, the numerator is always 0, while the denominator is |x|. Thus, the limit along the x-axis is:

Lim (x, y) → (0, 0) 0/|x| = 0

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In a travel simulation, Harry will visit one of his friends that are located in three states. He has ten friends in California, three in Nevada, and two in Utah. How do you produce a random number between 1 and 3, denoting the destination state, with a probability that is proportional to the number of friends in each state?

Answers

If this process is repeated many times, approximately 67% of the time the destination state will be California, 20% of the time it will be Nevada, and 13% of the time it will be Utah.

One way to produce a random number between 1 and 3, denoting the destination state with a probability that is proportional to the number of friends in each state, is:

Calculate the total number of friends: 10 + 3 + 2 = 15

Calculate the probabilities of choosing each state: California = 10/15 = 0.67, Nevada = 3/15 = 0.20, Utah = 2/15 = 0.13

Generate a random number between 0 and 1 using a random number generator, denoted by x.If 0 ≤ x < 0.67, choose California.

If 0.67 ≤ x < 0.87, choose Nevada.

If 0.87 ≤ x ≤ 1, choose Utah.

This method ensures that the probability of choosing each state is proportional to the number of friends in that state.

For example, if this process is repeated many times, approximately 67% of the time the destination state will be California, 20% of the time it will be Nevada, and 13% of the time it will be Utah.

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for the given rod, which segments must, at a minimum, be considered in order to use δ=∑nlae to calculate the deflection at d ?

Answers

To calculate the deflection at point D on the circular rod, we need to consider the segments BD, CD, and AD. Using the formula δ=∑NLAE, we can calculate the deflection as 0.0516 m.

To calculate the deflection at point D using the formula δ=∑NLAE, we need to first segment the rod and then calculate the deflection for each segment.

Segment the rod

Based on the given information, we need to consider segments BD, CD, and AD to calculate the deflection at point D.

Calculate the internal normal force N for each segment

We can calculate the internal normal force N for each segment using the formula N=F1+F2 (for BD), N=F2 (for CD), and N=0 (for AD).

For segment BD

N = F1 + F2 = 140 kN + 55 kN = 195 kN

For segment CD

N = F2 = 55 kN

For segment AD

N = 0

Calculate the cross-sectional area A for each segment

We can calculate the cross-sectional area A for each segment using the formula A=πd²/4.

For segment BD:

A = πd₁²/4 = π(7.6 cm)²/4 = 45.4 cm²

For segment CD

A = πd₂²/4 = π(3 cm)²/4 = 7.1 cm²

For segment AD

A = πd₁²/4 = π(7.6 cm)²/4 = 45.4 cm²

Calculate the length L for each segment

We can calculate the length L for each segment using the given dimensions.

For segment BD:

L = L₁/2 = 6 m/2 = 3 m

For segment CD:

L = L₂ = 5 m

For segment AD:

L = L₁/2 = 6 m/2 = 3 m

Calculate the deflection δ for each segment using the formula δ=NLAE:

For segment BD:

δBD = NLAE = (195 kN)(3 m)/(100 GPa)(45.4 cm²) = 0.0124 m

For segment CD:

δCD = NLAE = (55 kN)(5 m)/(100 GPa)(7.1 cm²) = 0.0392 m

For segment AD

δAD = NLAE = 0

Calculate the total deflection at point D:

The deflection at point D is equal to the sum of the deflections for each segment, i.e., δD = δBD + δCD + δAD = 0.0124 m + 0.0392 m + 0 = 0.0516 m.

Therefore, the deflection at point D is 0.0516 m.

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--The given question is incomplete, the complete question is given

"For a bar subject to axial loading, the change in length, or deflection, between two points A and Bis δ=∫L0N(x)dxA(x)E(x), where N is the internal normal force, A is the cross-sectional area, E is the modulus of elasticity of the material, L is the original length of the bar, and x is the position along the bar. This equation applies as long as the response is linear elastic and the cross section does not change too suddenly.

In the simpler case of a constant cross section, homogenous material, and constant axial load, the integral can be evaluated to give δ=NLAE. This shows that the deflection is linear with respect to the internal normal force and the length of the bar.

In some situations, the bar can be divided into multiple segments where each one has uniform internal loading and properties. Then the total deflection can be written as a sum of the deflections for each part, δ=∑NLAE.

The circular rod shown has dimensions d1 = 7.6 cm , L1 = 6 m , d2 = 3 cm , and L2 = 5 m with applied loads F1 = 140 kN and F2 = 55 kN . The modulus of elasticity is E = 100 GPa . Use the following steps to find the deflection at point D. Point B is halfway between points A and C.

Segment the rod

For the given rod, which segments must, at a minimum, be considered in order to use δ=∑NLAE to calculate the deflection at D?"--

A truck is shipping jugs of drinking water and cases of paper towels> A jug of drinking water weighs 40 pounds and a case of paper towels weighs 16 pounds. THe truck can carry 2000 pounds of cargo altogether

Answers

The maximum number of jugs of drinking water and cases of paper towels that the truck can transport is 75 cases of paper towels and 31 jugs of drinking water.

A truck is transporting jugs of drinking water and cases of paper towels. A jug of drinking water weighs 40 pounds, while a case of paper towels weighs 16 pounds. The truck can carry a total of 2000 pounds of cargo.

When it comes to such problems, it is necessary to use algebra to solve them. x is the number of jugs of water, while y is the number of paper towel cases. The problem is that the total number of jugs and cases should not exceed 2000 pounds.x + y ≤ 2000

The weight of each jug and the weight of each case are added together:40x + 16y ≤ 2000These two equations are used to construct the answer by combining them to yield a range of possible values for x and y, as well as the feasibility of the solution.

Using the first equation:x + y ≤ 2000y ≤ -x + 2000

Using the second equation:40x + 16y ≤ 2000-5x - 2y ≤ -250y ≤ 5/2x + 125

Finally, graph the inequalities:

y ≤ -x + 2000y ≤ 5/2x + 125

Using the graph, the region where both inequalities are satisfied is shaded.

As a result, the intersection of these two regions is the area where the equation is valid.

The feasible range of jugs of drinking water and cases of paper towels can now be found. Therefore, a conclusion to this problem can be drawn.

The maximum number of jugs of drinking water and cases of paper towels that the truck can transport is 75 cases of paper towels and 31 jugs of drinking water.

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Vector a is expressed in magnitude and direction form as a⃗ =〈26‾‾‾√,140∘〉. What is the component form a⃗ ? Enter your answer, rounded to the nearest hundredth, by filling in the boxes.
a⃗ = 〈 , 〉

Answers

The component form of vector a⃗, rounded to the nearest hundredth, is:

a⃗ = 〈-12.99, 19.97〉

To find the component form of vector a⃗, which is expressed in magnitude and direction form as a⃗ =〈26√,140°〉, we can use the formulas for converting polar coordinates to rectangular coordinates:

x = r * cos(θ)
y = r * sin(θ)

In this case, r (magnitude) is equal to 26√ and θ (direction) is equal to 140°. Let's calculate the x and y components:

x = 26√ * cos(140°)
y = 26√ * sin(140°)

Note that we need to convert the angle from degrees to radians before performing the calculations:

140° * (π / 180) ≈ 2.4435 radians

Now, let's plug in the values:

x ≈ 26√ * cos(2.4435) ≈ -12.99
y ≈ 26√ * sin(2.4435) ≈ 19.97

Therefore, the component form of vector a⃗ is:

a⃗ = 〈-12.99, 19.97〉

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A 11 m ladder is leaning against a wall. The foot of the ladder is 6 m from the wall. Find the angle that the ladder makes with the ground.

Answers

The angle the ladder makes with the ground is approximately 58.1 degrees.

We can utilize geometry to find the point that the stepping stool makes with the ground. We should call the point we need to find "theta" (θ).

In the first place, we can draw a right triangle with the stepping stool as the hypotenuse, the separation from the wall as the contiguous side, and the level the stepping stool comes to as the contrary side. Utilizing the Pythagorean hypothesis, we can track down the level of the stepping stool:

[tex]a^2 + b^2 = c^2[/tex]

where an is the separation from the wall (6 m), b is the level the stepping stool ranges, and c is the length of the stepping stool (11 m). Improving the condition and settling for b, we get:

b = [tex]\sqrt (c^2 - a^2)[/tex] = [tex]\sqrt(11^2 - 6^2)[/tex] = 9.3 m

Presently, we can utilize the digression capability to track down the point theta:

tan(theta) = inverse/contiguous = b/a = 9.3/6

Taking the converse digression (arctan) of the two sides, we get:

theta = arctan(9.3/6) = 58.1 degrees (adjusted to one decimal spot)

Subsequently, the point that the stepping stool makes with the ground is around 58.1 degrees.

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4 Round 17.37 to the nearest tenth.​

Answers

Answer:

17.4

Step-by-step explanation:

The Hundredths place is above four so it has to be the next number up

Answer:17.40

Step-by-step explanation:

17.37 rounded to the nearest tenth is, 17.40, because when rounding, you see if the number is 5 or up ( that means you round it up.)

What is the conclusion that follows in a single step from the premises?
Given the following premises:
1. R ⊃ (E • D)
2. R • ∼G
3. ∼E ⊃ G

Answers

The premises is R • ∼E • ∼D • G

This is the desired conclusion.

The premises, we can conclude that:

R • ∼E • ∼D

The following steps of deductive reasoning:

From premise 3 and the contrapositive of premise 1 can deduce that:

∼(E • D) ⊃ ∼R

Using De Morgan's Law can rewrite this as:

(∼E ∨ ∼D) ⊃ ∼R

Since R ⊃ (E • D) by premise 1 can substitute this into the above equation to get:

(∼E ∨ ∼D) ⊃ ∼(R ⊃ (E • D))

Using the rule of implication can simplify this to:

(∼E ∨ ∼D) ⊃ (R • ∼(E • D))

From premise 2 know that R • ∼G.

Using De Morgan's Law can rewrite this as:

∼(R ∧ G)

Combining this with the above equation get:

(∼E ∨ ∼D) ⊃ ∼(R ∧ G ∧ E ∧ D)

Simplifying this using De Morgan's Law and distributivity get:

(∼E ∨ ∼D) ⊃ (∼R ∨ ∼G)

Finally, using premise 3 and modus ponens can deduce that:

∼E ∨ ∼D ∨ G

Since we know that R • ∼G from premise 2 can substitute this into the above equation to get:

∼E ∨ ∼D ∨ ∼(R • ∼G)

Using De Morgan's Law can simplify this to:

∼E ∨ ∼D ∨ (R ∧ G)

Multiplying both sides by R and ∼E get:

R∼E∼D ∨ R∼EG

Using distributivity and commutativity can simplify this to:

R(∼E∼D ∨ ∼EG)

Finally, using De Morgan's Law can rewrite this as:

R(∼E ∨ G) (∼D ∨ G)

This is equivalent to:

R • ∼E • ∼D • G

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The line through (2,1,0) and perpendicular to bothi+j and j+k. Find the parametric equation and symmetric equation.

Answers

The parametric equations of the line are:

x = 2

y = 1 - t

z = t

And the symmetric equations of the line are:

x - 2 = 0

y - 1 = -1

z = 1

For the line through the point (2, 1, 0) and perpendicular to both i + j and j + k, we can determine the direction vector of the line.

First, let's find the direction vector by taking the cross product of the vectors i + j and j + k:

(i + j) × (j + k) = i × j + i × k + j × j + j × k

= k - i + 0 + i - j + 0

= -j + k

Therefore, the direction vector of the line is -j + k.

Now, we can write the parametric equations of the line using the given point (2, 1, 0) and the direction vector:

x = 2 + 0t

y = 1 - t

z = 0 + t

The parameter t represents a scalar that can vary, and it determines the points on the line.

To write the symmetric equation, we can use the direction vector -j + k as the normal vector. The symmetric equation is given by:

(x - 2)/0 = (y - 1)/(-1) = (z - 0)/1

Simplifying this equation, we get:

x - 2 = 0

y - 1 = -1

z - 0 = 1

Which can be written as:

x - 2 = 0

y - 1 = -1

z = 1

In summary, the parametric equations of the line are:

x = 2

y = 1 - t

z = t

And the symmetric equations of the line are:

x - 2 = 0

y - 1 = -1

z = 1

These equations describe the line that passes through the point (2, 1, 0) and is perpendicular to both i + j and j + k.

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Find the missing probability.

P(B)=1/4P(AandB)=3/25P(A|B)=?

Answers

Note that the missing probability P(A | B) =  12/25. this was solved using Bayes Theorem.

What is Baye's Theorem?

By adding new knowledge, you may revise the expected odds of an occurrence using Bayes' Theorem. Bayes' Theorem was called after the 18th-century mathematician Thomas Bayes. It is frequently used in finance to calculate or update risk evaluation.

Bayes Theorem is given as

P(A |B ) = P( A and B) / P(B)

We are given that

P(B) = 1/4 and P(A and B) = 3/25,

so substituting, we have

P(A |B ) = (3/25) / (1/4)

To divide by a fraction, we can multiply by its reciprocal we can say

P(A|B) = (3/25) x (4/1)

 = 12/25

Therefore, P(A | B) = 12/25.

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22) The parents of a college student set up an


account for her with an inital deposit of


$5,000. They set up automatic deposits of


$100 per week.


Write and solve an equation to determine


how much money the student will have


after 15 weeks.

Answers

The student will have $6,500 after 15 weeks.

The initial deposit is $5,000 and the weekly automatic deposit is $100. Let x be the total amount of money the student will have after 15 weeks.

Therefore, the equation that represents the total amount of money the student will have is:x = $5,000 + $100(15)

Since the question wants to know the total amount of money the student will have after 15 weeks,

we simply substitute the value of 15 for the weeks in the equation.

x = $5,000 + $100(15)

x = $5,000 + $1,500

x = $6,500

Therefore, the student will have $6,500 after 15 weeks.

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the standard deviation of a statistics test is 29.7. how large of a sample size is needed to estimate the true mean score within 5 points with 95% confidence

Answers

A sample size of approximately 136 is needed to estimate the true mean score within 5 points with 95% confidence.

How to find the sample size of the mean

To determine the sample size needed to estimate the true mean score within 5 points with 95% confidence, we can use the formula for sample size calculation:

n = (Z * σ / E)²

In this case, the standard deviation (σ) of the statistics test is given as 29.7, and the desired margin of error (E) is 5.

Plugging these values into the formula:

[tex]n = (1.96 * 29.7 / 5)^2[/tex]

Calculating this expression:

n ≈[tex](58.212 / 5)^2[/tex]

n ≈ [tex]11.6424^2[/tex]

n ≈ 135.6336

Therefore, a sample size of approximately 136 is needed to estimate the true mean score within 5 points with 95% confidence.

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using the variation of parameter formula determine the general solution of t 2 y ′′ 3ty′ y = ln(t) t > 0

Answers

The variation of parameter formula is used to determine the general solution of a second-order linear differential equation. In this case, we have t^2y''+3ty'+yln(t)=0. To use the variation of parameter formula, we first need to find the complementary solution. Then we can find two particular solutions and use them to form the general solution. The complementary solution is y_c=c1t^(-1/3)+c2t. To find the particular solutions, we assume y1=u1(t)t^(-1/3) and y2=u2(t)t, where u1(t) and u2(t) are functions of t. Plugging these into the differential equation and solving for u1(t) and u2(t), we get the particular solutions. The general solution is then y=y_c+y1+y2.

The given differential equation is t^2y''+3ty'+yln(t)=0. We first find the complementary solution by assuming y=e^(rt) and solving the characteristic equation r^2+3r+ln(t)=0. The roots are complex, so the complementary solution is y_c=c1t^(-1/3)+c2t.
Next, we assume y1=u1(t)t^(-1/3) and y2=u2(t)t as the particular solutions. Then, we can find the derivatives y1'=-u1'(t)t^(-1/3)+(-1/3)u1(t)t^(-4/3) and y2'=u2'(t)t+(1/t)u2(t), and y1''=u1''(t)t^(-1/3)+(2/9)u1(t)t^(-7/3)+(2/3)u1'(t)t^(-4/3) and y2''=u2''(t)t+(2/t)u2'(t)-(1/t^2)u2(t). Plugging these into the differential equation, we get the system of equations:
u1''(t)t^(-1/3)+(2/9)u1(t)t^(-7/3)+(2/3)u1'(t)t^(-4/3)+u2''(t)t+(2/t)u2'(t)-(1/t^2)u2(t)=ln(t)
(-1/3)u1'(t)t^(-1/3)+(1/t)u2(t)=0
Solving for u1(t) and u2(t), we get:
u1(t)=(1/18)t^2(ln(t)-6C1t^(4/3)+18C2t^(2/3))
u2(t)=C3t+((1/3)t^2+C4)ln(t)
Therefore, the general solution is:
y=c1t^(-1/3)+c2t+(1/18)t^2(ln(t)-6C1t^(4/3)+18C2t^(2/3))+C3t+((1/3)t^2+C4)ln(t)

Using the variation of parameter formula, we found the general solution of the given differential equation to be y=c1t^(-1/3)+c2t+(1/18)t^2(ln(t)-6C1t^(4/3)+18C2t^(2/3))+C3t+((1/3)t^2+C4)ln(t). This formula can be used to solve similar second-order linear differential equations.

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At the beginning of 2010, a landfill contained 1400 tons of solid waste. The increasing function W models the total amount of solid waste stored at the landfill. Planners estimate that W will satisfy the differential dW 1 equation (W – 300) for the next 20 years. W is measured in tons, and t is measured in years from dt 25 the start of 2010. 25 W. Use the line tangent to the graph of Watt 0 to approximate the amount of solid waste that the landfill contains at the end of the first 3 months of 2010

Answers

Therefore, we can estimate that the landfill contains approximately 1725 tons of solid waste at the end of the first 3 months of 2010.


Using the given information, we know that at t=0 (the beginning of 2010), W=1400 tons. We also know that the differential equation that models the increase in solid waste is dW/dt = 1(W-300).
To approximate the amount of solid waste at the end of the first 3 months of 2010, we need to find the value of W at t=0.25 (since t is measured in years from the start of 2010).
Using the line tangent to the graph of W at t=0, we can estimate the value of W at t=0.25. The slope of the tangent line is equal to dW/dt at t=0, which is 1(1400-300) = 1100 tons/year.
So the equation of the tangent line at t=0 is W = 1400 + 1100(t-0) = 1400 + 1100t. Plugging in t=0.25, we get W=1725 tons.
Using the given differential equation and tangent line, we estimate that the landfill contains approximately 1725 tons of solid waste at the end of the first 3 months of 2010, based on an initial amount of 1400 tons at the beginning of the year.

Therefore, we can estimate that the landfill contains approximately 1725 tons of solid waste at the end of the first 3 months of 2010.

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16


Drag each label to the correct location on the table.


A local café serves tea, coffee, cookies, scones, and muffins. They recently gathered data about their customers who purchase both a drink and a


snack. The given frequency table shows the results of the survey.


If approximately 24% of the customers surveyed have a scone with their tea and approximately 36% of the customers surveyed buy a muffin,


complete the column and row headings for the given table.


Coffee


Tea


Cookie


Muffin


Scone


Total


40


110


100


80


250


250


120


50


Total


160


180


160


500


Reset


Nec

Answers

Each label should be dragged to the correct location on the table as shown below.

What is a frequency table?

In Mathematics and Statistics, a frequency table can be used for the graphical representation of the frequencies or relative frequencies that are associated with a categorical variable or data set.

Assuming approximately 24% of the customers that were surveyed have a scone with their tea while approximately 36% of the customers surveyed bought a muffin, the column and row headings of the frequency table should be completed as follows;

                 Scone         Muffin        Cookie       Total_

Coffee        40                100             110             250

Tea             120               80              50             250_

Total           160               180            160             500

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Missing information:

The question is incomplete and the complete question is shown in the attached picture.

Which is the domain of the relation? {(4, 2), (-3, 0), (2, 5), (-1, 4), (0, 1)}

Answers

Answer:

In the given relation {(4, 2), (-3, 0), (2, 5), (-1, 4), (0, 1)}, the x-values are 4, -3, 2, -1, and 0.

Therefore, the domain of the relation is {4, -3, 2, -1, 0}.

Step-by-step explanation:

Answer:

{4, -3, 2, -1, 0}.

Step-by-step explanation:

solve for x

2x÷3+3=5​

Answers

Answer: 3

Step-by-step explanation:

Answer:

2x+9=15

Step-by-step explanation:

Find common denominator

Combine fractions with common denominator

Multiply the numbers

Multiply all terms by the same value to eliminate fraction denominators

Cancel multiplied terms that are in the denominatorMultiply the numbers

a company makes two similar cylindrical containers. the total surface area of the smaller container is 0 . 81 times that of the larger container. the height of the larger container is 60 centimeters. what is the height of the smaller container?

Answers

Answer:

54 cm

--------------------

Area is the product of two dimensions, so the ratio of areas of similar figures is equal to the square of the scale factor k.

k² = 0.81

Hence the scale factor is:

k = √0.81 = 0.9

Therefore the ratio of corresponding parts is:

x / 60 = 0.9x = 60*0.9x = 54

Mary is designing a circular piece of stained glass with a diameter of 9 inches. She is going to sketch a square inside the circular region. Find to the nearest tenth of an inch, the largest possible length of a side of a square

Answers

Answer:

6.4 inches

Step-by-step explanation:

The diagonal of a square is equal to the diameter of the circle that can be inscribed in the square. So, if we can find the diameter of the circle, we can then find the length of the square's diagonal, which is also the largest possible length of a side of the square.

The diameter of the circle is 9 inches, so the radius is 4.5 inches. The diagonal of the square is the diameter of the circle, which is 9 inches.

Let's use the Pythagorean theorem to find the length of a side of the square:

a^2 + b^2 = c^2

where a and b are the sides of the square and c is the diagonal.

We know c = 9, so:

a^2 + b^2 = 9^2 = 81

Since we want the largest possible length of a side of the square, we want to maximize the value of a. In a square, a and b are equal, so we can simplify the equation to:

2a^2 = 81

a^2 = 40.5

a ≈ 6.4 (rounded to the nearest tenth of an inch)

Therefore, the largest possible length of a side of the square is approximately 6.4 inches.

if the null space of a 9×4 matrix a is 3-dimensional, what is the dimension of the row space of a?

Answers

If the null space of a 9x4 matrix A is 3-dimensional, the dimension of the row space of A is 1.

If the null space of a 9x4 matrix A is 3-dimensional, the dimension of the row space of A can be found using the Rank-Nullity Theorem.

The Rank-Nullity Theorem states that for a matrix A with dimensions m x n, the sum of the dimension of the null space (nullity) and the dimension of the row space (rank) is equal to n, which is the number of columns in the matrix. Mathematically, this can be represented as:

rank(A) + nullity(A) = n

In your case, the null space is 3-dimensional, and the matrix A has 4 columns, so we can write the equation as:

rank(A) + 3 = 4

To find the dimension of the row space (rank), simply solve for rank(A):

rank(A) = 4 - 3
rank(A) = 1

So, if the null space of a 9x4 matrix A is 3-dimensional, the dimension of the row space of A is 1.

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For f(x)=x^2 and g(x)=x^2+9, find the following composite functions and state the domain of each.
​(a) f.g (b) g.f ​ (c) f.f (d) g.g

Answers

(a) The value of the function f.g(x) = f(x²+9) = (x²+9)²
(b) The value of the function g.f(x) = g(x²) = x⁴+9
(c) The value of the function f.f(x) = f(x²) = (x²)²
(d) The value of the function g.g(x) = g(x²+9) = (x²+9)²+9

Domains of each:
(a) All real numbers
(b) All real numbers
(c) All real numbers
(d) All real numbers

For composite functions, you insert the second function into the first function.

(a) f.g(x) = f(g(x)) = f(x²+9) = (x²+9)²
(b) g.f(x) = g(f(x)) = g(x²) = x⁴+9
(c) f.f(x) = f(f(x)) = f(x²) = (x²)²
(d) g.g(x) = g(g(x)) = g(x²+9) = (x²+9)²+9

The domain of a function is the set of input values for which the function is defined. Since all these composite functions are polynomial functions, they are defined for all real numbers.

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Answer the questions by comparing the equation. The question is in the photo.

Answers

The vertical direction moved by the graph is 1 unit up

How to determine the vertical direction of the graph

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

y = 7cos(2π/7(x + 9)) + 1

A sinusoidal function is represented as

f(x) = Acos(B(x + C)) + D or

f(x) = Asin(B(x + C)) + D

Where

Amplitude = APeriod = 2π/BPhase shift = CVertical shift = D

Using the above as a guide, we have the following:

Vertical shift = D = 1

Hence, the vertical direction of the graph is 1 unit up

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3. The material Santiago will use to build the


ramp costs $2. 20) per square foot what will the cost of building the ramp be?

Answers

We need to know the area of the ramp in order to calculate the total cost of the material. Let's assume the ramp has a length of L feet and a width of W feet. Then the area of the ramp can be calculated as:

Area = Length x Width = L x W

We don't have any specific values for L and W, but let's assume that Santiago wants to build a ramp that is 10 feet long and 3 feet wide. In that case:

Area = 10 feet x 3 feet = 30 square feet

Now we can calculate the cost of building the ramp by multiplying the area by the cost per square foot:

Cost = Area x Cost per square foot = 30 square feet x $2.20/square foot

Cost = $66

Therefore, the cost of building the ramp with a length of 10 feet and a width of 3 feet, using material that costs $2.20 per square foot, would be $66.

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