What is the difference?

To improve the fairness of a passenger survey on a railway line, it would be ideal to over-sample data from groups that are less likely to be represented in the regular ridership during peak hours of 7:00 am to 5:00 pm. One such group could be passengers who use the railway line during off-peak hours, such as early mornings or late evenings.

Over-sampling these groups will provide a more comprehensive picture of the ridership patterns and preferences of all passengers, rather than just those who use the railway line during peak hours. This approach will lead to a more accurate assessment of the passenger experience and needs and, therefore, allow for better decision-making when it comes to improving services and amenities.

Other groups that could be over-sampled include passengers with disabilities, seniors, and students who may have different transportation needs and experiences compared to the general ridership. By considering the unique experiences and needs of all passengers, railway companies can work towards creating a more inclusive and accessible transportation system.

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y = -1/3x + 1

y = -2x - 3

We can compare the equations to the graphs and see which graph represents the intersection point of the two equations.

The first equation, y = -1/3x + 1, has a negative slope (-1/3) and a y-intercept of 1.

The second equation, y = -2x - 3, also has a negative slope (-2) and a y-intercept of -3.

Based on the slopes and y-intercepts, we can identify the correct graph by finding the point where the two lines intersect.

Unfortunately, since the graphs are not provided, I am unable to determine which specific graph shows the solution to the system of linear equations. I recommend referring to the graph representation of the equations and identifying the intersection point to determine the correct graph.

The entrance fees is 13 dollars charges by the paintball court.

Let us assume that the entrance fees is $X and the actual cost of using one ball is $Y charged by the paintball court.

According to one situation,

Total cost of using to ball = Cost of entry fees + actual cost of using two ball.

So, we can write,

X + 2Y = 18

Let us say that this is our equation 1,

Also, it is provided,

Total cost of using 4 balls = cost of entry fees + actual cost of using four balls.

X + 4Y = 23

Let us say that this is our equation 2,

Both of our equations are linear equations with two variables,

Now, substracting equation 1 from equation 2,

X + 4Y -(X + 2Y) = 23 - 18

2Y = 5

Y = $2.5.

Putting the value of Y = 2.5 in equation 1,

X + 2(2.5) = 18

X = 18 - 5

X = $13.

So, the entry fees is 13 dollars.

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If the angles are ∠1 = 2x + 4 and ∠2 = 3x - 3, then m∠TRS =  36°.

What is an angle?

An angle is a figure in plane geometry that is created by two rays or lines that have a shared endpoint. The Latin word "angulus," which meaning "corner," is the source of the English term "angle." The shared terminus of two rays is known as the vertex, and the two rays are referred to as sides of an angle.

The measure of ∠1 = 2x + 4

The measure of ∠2 = 3x - 3

The measure of ∠TRS is -

∠TRS = ∠1 + ∠2

Since, PR is a bisector then ∠1 = ∠2.

The equation is -

2x + 4 = 3x - 3

2x - 3x = - 3 - 4

-x = -7

x = 7

Substitute the value of x in the angles -

∠1 = 2(7) + 4

∠1 = 14 + 4

∠1 = 18°

∠2 = 3(7) - 3

∠2 = 21 - 3

∠2 = 18°

So, the value of ∠TRS is -

∠1 + ∠2

18° + 18°

36°

Therefore, the measure of ∠TRS is 36°.

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Explanation:

line ⇒ a straight arrangement of points extending without end in opposite directions.

line segment ⇒ part of a line that consists of two points called endpoints and all of the points between those endpoints.

ray ⇒ part of a line that consists of an endpoint and all points on the line that extends in one direction.

point ⇒ has no dimension; is one of the undefined terms of geometry. Some may also refer to a point as a dot or dots on a line.

Answer:

1.85

Step-by-step explanation:

1.75-0.5+0.6= 1.85 or 1 17/20

Answer:

1.85

Step-by-step explanation:

1.75 - 0.5 + 0.6 = 1.85

Answer:

I hope that helped

Step-by-step explanation:

At approximately t = 0.2742, y increases to 100 or drops to 1, depending on the value of a.

a. To solve the initial-value problem d y d t = 5 y , we can use separation of variables.

First, we write the differential equation as:

1 y d y = 5 d t

Integrating both sides, we get:

ln | y | = 5 t + C

where C is the constant of integration.

Using the initial condition y 0 = 7, we can solve for C:

ln | 7 | = 5 ( 0 ) + C

C = ln | 7 |

Thus, the solution to the initial-value problem is:

ln | y | = 5 t + ln | 7 |

Taking the exponential of both sides, we get:

| y | = e 5 t + ln | 7 | = 7 e 5 t

Since the initial condition y 0 = 7 is positive, we can drop the absolute value signs and write the solution as:

y = 7 e 5 t

Now we can use this solution to answer part (a) of the question.

If y = 100, then:

100 = 7 e 5 t

Solving for t, we get:

t = ln ( 100 / 7 ) 5 ≈ 0.6885

If y = 1, then:

1 = 7 e 5 t

Solving for t, we get:

t = ln ( 1 / 7 ) 5 ≈ -0.4591

However, this solution is not valid since we are looking for the time at which y drops to 1, which is impossible since the solution is always positive. Therefore, there is no solution to part (a) for y = 1.

b. To find t, we can use the solution we obtained in part (a) and plug in y = at.

If y = at, then:

at = 7 e 5 t

Solving for t using numerical methods, we get:

t ≈ 0.2742

Rounding to four decimal places, we get:

t ≈ 0.2742

Therefore, at approximately t = 0.2742, y increases to 100 or drops to 1, depending on the value of a.

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Answer:

The correct answer is 2. I hope this helps!

Step-by-step explanation:

I am almost 100% sure that this is the answer.

Answer:

2

Step-by-step explanation:

Answer:

see explanation

Step-by-step explanation:

solving the inequality

- 13t ≤ 78

divide both sides by - 13, reversing the symbol as a result of dividing by a negative quantity.

t ≥ - 6

this means that any value of t greater than 6, including 6, is a solution.

listing the solutions from - 10 through to 10 that are solutions when substituted for t

- 6, - 5, - 4, - 3, - 2, - 1, 0, 1, 2, 3, 4, 5, 6

The cost of the apples is 2.9 dollars.

The cost of the bananas is 5.7 dollars.

The total cost is 6 dollars, each apple cost $1.50 each banana cost $.30 and there’s two more bananas then apples.

Therefore,

let

x = number of apples

y = 2x

where

Therefore, using equations,

1.5(x) + y(0.30) = 6

Hence,

where

y = 2x

1.5(x) + 2x(0.30) = 6

1.5x + 0.6x = 6

2.1x = 6

divide both sides by 2.1

x = 6 / 2.1

x = 2.9 dollars

y = 2(2.9) = 5.7 dollars

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Answer:

9-7= 2

8 / 2 = 4

4 X 9 = 36

4 X 7 = 28

36 students in math class

Answer:

36 students in the math class

Step-by-step explanation:

As per the unitary method, the number of students in the auditorium is 108

Unitary method.

In algebra, the process of finding the value of a single unit, and based on this value is known as unitary method.

Given,

Students filled 6 rows in Level 1 of Section A and 3 rows in Level 3 of Section B.

Here we need to find the number of  students were seated in the auditorium.

As per the given table, in level 1, the total number of rows in A section is 9.

So, the number of students is

=> 9 x 6

=> 54

Similarly, there are 3 rows in Level 3 of Section B.

So, the number of students in the level 2,

=> 3 x 18

=> 54

Therefore, the total number of students is,

=> 54 + 54 = 108

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Answer:

5040

Step-by-step explanation:

an illustration of permutations

The given parameter is:

number of days

dinners for 7 days

Substitute known values

As per row echelon form of the matrix, the column space for the given matrix A is { [1 0], [3 1] }

The term row  echelon form of the matrix is defined as a matrix is in echelon form if it has the shape resulting from a Gaussian elimination.

Here we have given the following matrix

\(\begin{bmatrix}1 &3 &5 &0 \\0 & 1 & 2 & -3\end{bmatrix}\)

As  we all know that the column space is a space spanned by the columns of the initial matrix that correspond to the pivot columns of the reduced matrix.

As per the definition of row echelon the given matrix is already in the row echelon form.

So, the column space is written as, first two columns

=> \(\begin{bmatrix}1 \\0\end{bmatrix}\begin{bmatrix}3 \\1\end{bmatrix}\\\)

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The required function formula for Camille buy 10 ticket for $5and spend $135 at fundraiser is S(R) = 85 + 5 R .

Given,

The price of each raffle = $ 5,

⇒ The price of 10 raffle = 10 × 5 = $ 50

Since, her total spending at the fundraiser = Her admission fee + price of raffle she buys,

⇒ Her total spending when she buy 10 raffle = Her admission fee + $ 50

According to the question,

Her admission fee + $ 50 = $ 135

⇒ Her admission fee = 135 - 50 = $ 85

Hence, if she buys R raffle then her spending = 85 + 5 R

Here, S represents her total spending,

⇒ S = 85 + 5 R

Or S(R) = 85 + 5 R

Which is the required function formula.

Given question is incomplete , the complete question is given below:

Camille is attending a fundraiser. she pays for her admission and buys raffle ticket for five dollars each. if she buys 10 raffle tickets then she would spend a total of $135 at the fundraiser.

The number S of dollars Camille spent at the fundraiser is the function of R, The number of raffle tickets she buys. write the functions formula.

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The cylinder should make approximately 0.3097 revolutions per second in order for the clothes to lose contact with the wall at an angle of 54.0°.

To determine the required number of revolutions per second for the cylinder in order for the clothes to lose contact with the wall at a specific angle, we can use the concept of centripetal acceleration.

The centripetal acceleration experienced by an object moving in a circular path of radius r at a speed v is given by the formula:

\(a = v^2 / r\)

In this case, when the clothes lose contact with the wall, the net force acting on them is the gravitational force pulling them downward, which can be expressed as:

mg = m * g

Since the gravitational force provides the centripetal force for the clothes, we can equate the centripetal acceleration to the gravitational acceleration:

v^2 / r = g

To solve for the speed v, we need to find the circumference of the circular path. The circumference C can be calculated as:

C = 2πr

Substituting this into the equation above, we have:

v^2 / (2πr) = g

Now, we need to find the required speed v when the clothes lose contact with the wall at an angle of θ = 54.0°. We can use the angle θ to find the arc length traveled by the clothes on the circular path.

The arc length s can be calculated as:

s = θ * r

Substituting the given values, we have:

s = (54.0°) * (0.512 m)

Next, we can calculate the time it takes for the clothes to traverse the arc length s at the required speed v. The time t can be calculated as:

t = s / v

Now, since we want to find the number of revolutions per second, we need to convert the time t into seconds per revolution (s/rev). Since each revolution covers the circumference C, the time for one revolution is:

t_rev = C / v

Finally, the number of revolutions per second is given by the reciprocal of the time for one revolution:

Rev/s = 1 / t_rev

Let's calculate the required number of revolutions per second using the given values. Assuming the acceleration due to gravity is approximately 9.8 m/s²:

r = 0.512 m (radius)

θ = 54.0° (angle)

g = 9.8 m/s² (acceleration due to gravity)

First, calculate the arc length s:

s = (54.0°) * (0.512 m) = 27.648 m

Next, calculate the required speed v using the centripetal acceleration equation:

v^2 / (2πr) = g

v^2 / (2π * 0.512 m) = 9.8 m/s²

v^2 = (2π * 0.512 m) * (9.8 m/s²)

v^2 = 10.0384 m²/s²

v ≈ 3.1687 m/s

Now, calculate the time for one revolution:

t_rev = (2π * 0.512 m) / (3.1687 m/s) ≈ 3.2321 s/rev

Finally, calculate the number of revolutions per second:

Rev/s = 1 / (3.2321 s/rev) ≈ 0.3097 rev/s

Therefore, the cylinder should make approximately 0.3097 revolutions per second in order for the clothes to lose contact with the wall at an angle of 54.0°.

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Answer:

74

Step-by-step explanation:

well, you see, потому что я плохая сука-ниггер, да бруддахол лмао

Answer:

B- For each hour that Michelle drove, she traveled an additional 50 miles.

Step-by-step explanation:

The statement that is true is For each hour that Michelle drove, she traveled an additional 50 miles.

The graph shows the relationship between a distance and the time .

With the graph interpretation, it display the relationship between the  number of hours that Michelle is driving as well as the distance, and it can be deduced that it started at  0 hours, and distance of 350 miles

Hence, option B is correct because  Michelle drove, an additional 50 miles since at zero y-coordinate was  no more distance to cover.

Check the graph at the attachment.

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Answer:45.43

Step-by-step explanation:39.50 plus 15 percent equal 45.425 and 45.425 rounded to the nearest cent is 45.43

Answer: 10,080

Step-by-step explanation:

280 x 36 = 10,080

If I got this wrong sorry, but the best way to find it is by dividing the number and hours Ik it doesn't make sense, I'm bad at explaining.

Answer:In 48 hours, 1,344 quarts of ice cream can be made.

The rate per day is 672 quarts of ice cream.

Step-by-step explanation:

Answer:

5 is the number

Step-by-step explanation:

2x + 12 = 22

2x+12-12 = 22-12

2x = 10

2x÷2 = 10÷2

x=5

Plug x back in the equation and check the answer.

2(5)+12 = 22

10+12 = 22

22=22

It checks out!

The radian measure 5π/6 is equivalent to 150 degrees. To convert radians to degrees, we can use the formula:

Degrees = Radians × (180/π)

In this case, we have the radian measure 5π/6. Plugging this into the formula, we get:
Degrees = (5π/6) × (180/π)

The π cancels out, leaving us with:
Degrees = (5/6) × 180

Simplifying further:
Degrees = (5/6) ×

180 = 150

Therefore, the radian measure 5π/6 is equivalent to 150 degrees.

To convert radians to degrees, we can use the formula

Degrees = Radians × (180/π). In this case, we have the radian measure 5π/6. Plugging this into the formula, we get Degrees = (5π/6) × (180/π). The π cancels out, leaving us with

Degrees = (5/6) × 180. Simplifying further, we find that the radian measure 5π/6 is equivalent to 150 degrees.

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Answer:

a product is negative when there is one negative sign with a numbe

Step-by-step explanation:

as an example...

-5 x 7 = -35

Answer: -1,-2,-3,-4,-5,-6,-7,-8,-9,-10,-11,-12,-13,-14, and more

Step-by-step explanation:

To write 10 more than a number, we use the mathematical operation of addition and the notation 10 + Number = N+10.

To write 10 more than a number, we need to use the mathematical operation of addition. Addition is the process of combining two or more numbers to find the total or sum.

In this case, we are given the number 5 and we are asked to find the number that is 3 more than it. To do this, we can use the mathematical notation: 10 + Number = N+10.

This notation means that we are adding 10 to a number, which results in N+10. The "+" symbol is the addition operator and it is used to indicate that we are performing an addition operation. The "=" symbol is used to indicate that the result of the addition is N+10.

Another way to write 10 more than a number is to use the phrase "10 plus a number". This phrase indicates that we are adding 10 to a number to get N+10.

Therefore, In short, to write 10 more than a number, we use the mathematical operation of addition and the notation 10 + Number = N+10. This means that we are adding 10 to a number, resulting in N+10. It can also be written as "10 plus N", indicating the same operation.

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Answer:

6

Step-by-step explanation:

The simplified expression is R = \(4^{14}/2^8\)

We have,

\(R = 4^{-7}2^{12} 4^{10} / 2^{20}4^{-4}\)

Now,

The exponents that have the same base can be combined by adding the powers.

Now,

The expression can be written as,

\(R = 4^{(-7+10+4)}2^{(12-20)}\)

R = \(4^{14}2^{-8}\)

or

R = \(4^{14}/2^8\)

Thus,

The simplified expression is R = \(4^{14}/2^8\)

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Answer:

the system will be worth $1892.25 after 2 years.

Explanation:

as the value decreases: \(\sf A = P(1 - \frac{r}{n})^{nt}\) ......notice the ' - '  as its *decreases*

given:

solve:

\(\sf A = 2500(1 - \frac{0.13}{1})^{1*2}\)

\(\sf A = 1892.25\)

another way of doing it easily is:

[ $2500 * (100- 13)% ] * (100- 13)% = $1892.25

Use compound interest formula

\(\\ \rm\hookrightarrow P(1-r/100)^t\)

\(\\ \rm\hookrightarrow 2500(1+0.13)^2\)

\(\\ \rm\hookrightarrow 2500(0.87)^2\)

\(\\ \rm\hookrightarrow 2500(0.76)\)

\(\\ \rm\hookrightarrow 1900\)

An atom with mass number 16 and nine neutrons corresponds to nitrogen (N). The compound with 10.0 g carbon and 13.32 g oxygen has 57.1% oxygen, while the compound with 10.0 g carbon and 26.64 g oxygen has 72.8% oxygen. The atomic symbol for an atom with 16 neutrons and atomic number 15 is \(^{31}P\) (phosphorus isotope). Elements Li, Na, K, Rb are Alkali Metals; Be, Mg, Ca, Sr, Ba are Alkaline Earth Metals; F, Cl, Br, I are Halogens; He, Ne, Ar, Kr, Xe, Rn are Noble Gases.

Part a) An atom with a mass number of 16 and nine neutrons would have an atomic number of 7. The atomic number represents the number of protons in an atom, which uniquely identifies an element.

Therefore, the element with an atomic number of 7 is nitrogen (N). Nitrogen has a mass number of 14, but the given atom has an additional two neutrons.

Part b) To calculate the percentage of oxygen in a compound, we need to determine the mass of oxygen relative to the total mass of the compound and multiply by 100.

Compound 1: 10.0 g carbon + 13.32 g oxygen

The total mass of the compound is 10.0 g + 13.32 g = 23.32 g.

The mass percentage of oxygen is (13.32 g / 23.32 g) × 100% = 57.1%.

Compound 2: 10.0 g carbon + 26.64 g oxygen

The total mass of the compound is 10.0 g + 26.64 g = 36.64 g.

The mass percentage of oxygen is (26.64 g / 36.64 g) × 100% = 72.8%.

Part c) An atomic symbol represents an element and includes its atomic number as a subscript and the mass number as a superscript. Given 16 neutrons and an atomic number of 15, the element is phosphorus (P).

The atomic symbol for this isotope of phosphorus is ^31P (with 15 as the atomic number and 31 as the mass number).

Part d)

Alkali Metals: Li, Na, K, Rb

Alkaline Earth Metals: Be, Mg, Ca, Sr, Ba

Halogens: F, Cl, Br, I

Noble Gases: He, Ne, Ar, Kr, Xe, Rn

Alkali Metals: Li, Na, K, Rb

Alkaline Earth Metals: Be, Mg, Ca, Sr, Ba

Halogens: F, Cl, Br, I

Noble Gases: He, Ne, Ar, Kr, Xe, Rn

Therefore, the elements can be classified as follows:

Alkali Metals: Li, Na, K, Rb

Alkaline Earth Metals: Be, Mg, Ca, Sr, Ba

Halogens: F, Cl, Br, I

Noble Gases: He, Ne, Ar, Kr, Xe, Rn

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