A rectangular swimming pool measures 30 meters by 50 meters. Tope swims back and forth the complete length of the pool parallel to the long side of the pool. She swims at a constant speed of 50 meters per minute. Meanwhile, her sister Tomi walks clockwise along the edges of the pool at a constant positive speed in such a way that they meet every time Tope reaches her starting point at the shorter side of the pool. What is Tomi's slowest possible walking speed, in meters per minute?

The inequality representing Marisa's goal to buy a phone costing at least $200, with $125 already saved and a plan to save $10 each week, is 125 + 10w \\geq 200, where w is the number of weeks of additional savings.

To write an inequality that represents Marisa's situation, we need to consider the amount she has already saved, the additional amount she plans to save weekly, and the minimum amount she needs for the phone. Marisa wants a phone that costs at least $200 and has saved $125. She plans to save $10 each week. We can use the variable w to represent the number of weeks she will save additional money.

Marisa's current savings plus the additional amount she plans to save for w weeks needs to be at least $200. This situation can be represented by the following inequality:

125 + 10w \\geq 200

Here, 125 represents the amount already saved, 10w represents the additional amount saved after w weeks, and the inequality symbol \\geq (greater than or equal to) establishes that Marisa's total savings must be at least $200.

Answer:

39 °F

Step-by-step explanation:

There's 4 hours difference between given times so the change in the temperature would be 4 × 8 = 32° F if the temperature drops 8 °F every hour therefore the temperature would be 71 - 32 = 39 °F

Answer: Julia is 48 years

The oldest child is 16 years

The youngest child is 12 years

Step-by-step explanation:

Let x represent the age of the youngest child.

Let y represent the age of the oldest child.

Let x represent Julia's age.

The sum of the ages of Julia and her 2 kids is 76 years. This means that

x + y + z = 76- - - - - - - - - - -1

Julia has 2 children who are 4 years apart in age. This means that

y = x + 4

Julia is four times older than her youngest child. This means that

z = 4x

Substituting z = 4x and y = x + 4 into equation 1, it becomes

x + x + 4 + 4x = 76

6x = 76 - 4 = 72

x = 72/6 = 12

y = x + 4 = 12 + 4

y = 16

z = 4x = 4 × 12

z = 48

Answer:

what?

Step-by-step explanation:

For the described uniform distribution, the probability that a fish is between 0.25 and 2 feet long can be found by calculating the area under the probability density function graph, which gives a result of 43.75%.

The given situation implies a uniform distribution as the probability density function is constant (equal to 1/4) for fish lengths between 0 and 4 feet, and zero otherwise. For such a distribution, the probability that the length x is in an interval can be found by calculating the area under the probability density function graph for that interval. As the graph is a rectangle, this is as simple as length times width.

Here, the interval is from 0.25 to 2 feet. The length of this interval is (2 - 0.25)= 1.75 feet. The width of the rectangle is the constant probability density function value of 1/4. Hence, the probability that a fish caught by the sports fishermen is between 0.25 and 2 feet long is 1.75 * 1/4 = 0.4375 or 43.75%.

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The Murphy family spend $ 700

Solution:

Given that,

Murphy family has 4 members and they went to 7 games

Let "x" be the cost of each game

Murphy family cost: [tex]4 \times 7 \times x = 28x[/tex]

Chen family has 5 members and they went to 4 games

Chen family cost: [tex]5 \times 4 \times x = 20x[/tex]

In total, the two families spent $1200

Therefore,

28x + 20x = 1200

48x = 1200

Divide both sides by 48

x = 25

How much did the Murphy family spend?

Murphy family cost = 28x = 28(25) = 700

Thus murphy family spend $ 700

Answer: The quotient is 2x² - x + 1

Step-by-step explanation:

We would apply the long division method to find the quotient of

(2x^3 + x^2 + 1)/(x + 1)

The attached photo shows the step by step calculations

Answer:yes

Step-by-step explanation:

Answer:

should be the 3rd choice

Step-by-step explanation:

even though the 2nd choice is technically correct for a rhombus, but this property does not explain the first part of this 2 part question.

We are looking for an answer that supports pert 1 of the question.

by definition, a rhombus is a parallelogram with 4 sides of equal length, which means 2 adjacent sides will have the same length, which explains the answer in the first part because JK and KL are adjacent sides

Answer:

5/6

Step-by-step explanation:

The ratio 35:42 represents the fraction:

                                                       [tex]\dfrac{35}{42}[/tex]

Now we have to cancel this fraction - we will divide numerator and denominator by 7:

35/7 = 5

42/7 = 6

Therefore,

                       [tex]\dfrac{35}{42} = \dfrac{7\cdot 5}{7\cdot 6} =\dfrac{5}{6}[/tex]

Answer:

[tex]p(x) = {x}^{4} + {x}^{3} - 7 {x}^{2} - x + 6[/tex]

Step-by-step explanation:

The polynomial function has zeros

x=1, x=2,x=-3,x=-1

This means the factored form of the polynomial is

[tex]p(x) = (x - 1)(x + 1)(x + 3)(x - 2)[/tex]

We expand to get:

[tex]p(x) = ( {x}^{2} - 1)( {x}^{2} + x - 6)[/tex]

We expand further to get:

[tex]p(x) = {x}^{2}( {x}^{2} + x - 6) - 1({x}^{2} + x - 6)[/tex]

[tex]p(x) = {x}^{4} + {x}^{3} - 6 {x}^{2} - {x}^{2} - x + 6[/tex]

This simplifies to:

[tex]p(x) = {x}^{4} + {x}^{3} - 7 {x}^{2} - x + 6[/tex]

This is the standard form of the polynomial since it is written in descending powers of x.

Answer:

The action required by the submarine to get back to the surface is to rise 195 feet

Step-by-step explanation:

we know that

The ocean's surface or sea level is at an elevation of 0 feet.

we have

1) A submarine dives 270 feet below the ocean's surface

In this moment the position of the submarine is

-270 ft ---> is negative because is below the sea level

2) It then rises 90 feet

In this moment the position of the submarine is

-270+90=-180 feet

3) rises another 40 feet,

In this moment the position of the submarine is

-180+40=-140 feet

4) Finally dives 55 feet

In this moment the position of the submarine is

-140-55=-195 feet

therefore

The action required by the submarine to get back to the surface is to rise 195 feet

Final answer:

The submarine initially dives to 270 feet below the surface and undergoes a series of rises and dives. After all movements, it is at a depth of 195 feet. To return to the surface, it needs to rise 195 feet.

Explanation:

A student asked: A submarine dives 270 feet below the ocean's surface. It then rises 90 feet, rises another 40 feet, and finally dives 55 feet. What action is required by the submarine to get back to the surface?

To solve this problem, we will sum up the changes in the submarine's depth and find out how much more it needs to rise to reach the surface.

Summing up these changes: -270 + 90 + 40 - 55 = -195 feet.

The submarine is currently 195 feet below the surface. Therefore, to get back to the surface, the submarine needs to rise 195 feet.

Answer: there are 25 red flowers in Sakura's garden.

Step-by-step explanation:

In Sakura's garden, for every 5 red flowers, there are 10 yellow flowers. This means that if there are 10 red flowers, there would be 20 yellow flowers. if there are 20 red flowers, there would be 40 yellow flowers. Therefore, the ratio of red flowers to yellow flowers in the garden is

5/10 = 10/20 £= 20/40 = 1/2 = 1:2

Total ratio = 2 + 1 = 3

If there are 75 total red and yellow flowers, then the total number of red flowers are in Sakura's garden would be

1/3 × 75 = 25

Answer:

25

Step-by-step explanation:

Step-by-step explanation: Understand it as a ratio. 5:10. Add both ratios together, 15. Make an expression, 15x=75. x=5, Then multiply 10 and 5 by 5 and that will give you the ratio of 25:50 red to yellow flowers.

Answer:

576 cm²

Step-by-step explanation:

Given:

Number of sections in a suncatcher (n) = 6

Each section is in the shape of a parallelogram.

Base of parallelogram = 12 cm

Height of parallelogram = 8 cm

Now, area of a parallelogram is given as:

Area of parallelogram = Base × Height

Area of 1 parallelogram = 12 cm × 8 cm = 96 cm²

Now, there are 6 parallelogram shaped sections.

So, area of the sections = area of 1 section × total number of sections

∴ Area of 6 sections = 96 cm² × 6 = 576 cm²

Therefore, the total area of the sections of a suncatcher is 576 cm².

Answer: the number of adult and student tickets sold are (45, 29)

Step-by-step explanation:

Let x represent the number of adult tickets that were sold.

Let y represent the number of student tickets that were sold.

On Wednesday, a total of 74 tickets were sold. This means that

x + y = 74

x = 74 - y- - - - - - - - - - - - - - 1

If adult tickets are sold for $15 and student tickets are sold for $11 and the money collected was $994, it means that

15x + 11y = 994- - - - - - - - - - - - - - 2

Substituting equation 1 into equation 2, it becomes

15(74 - y) + 11y = 994

1110 - 15y + 11y = 994

- 15y + 11y = 994 - 1110

- 4y = - 116

y = - 116/ - 4

y = 29

Substituting y = 29 into equation 1, it becomes

x = 74 - 29 = 45

The number of adult tickets and student tickets sold is (x, y) = (45, 29)

To determine the number of adult tickets x and student tickets y sold, we need to solve the system of equations given by the following conditions:

1. The total number of tickets sold is 74:

x + y = 74

2. The total revenue from the tickets is $994, with adult tickets sold for $15 each and student tickets sold for $11 each:

15x + 11y = 994

We can solve this system of equations using the substitution or elimination method. Here, we will use the elimination method.

First, let's write the two equations clearly:

x + y = 74

15x + 11y = 994

To eliminate one of the variables, we can multiply the first equation by 11, so the coefficients of  y in both equations will be the same:

[tex]\[ 11(x + y) = 11 \cdot 74 \][/tex]

11x + 11y = 814

Now we have:

11x + 11y = 814

15x + 11y = 994

Next, we subtract the first modified equation from the second equation to eliminate y

(15x + 11y) - (11x + 11y) = 994 - 814

15x + 11y - 11x - 11y = 180

4x = 180

x = 45

Now, substitute x = 45 back into the first original equation to find y

x + y = 74

45 + y = 74

y = 29

Therefore, the number of adult tickets and student tickets sold is:

(x, y) = (45, 29)

Answer:

Option b) Sample                                                            

Step-by-step explanation:

We are given the following in the question:

Survey:

356 surveys on television-viewing habits of American adolescents.

Result:

Average of 3.1 hours per day.

Population and sample:

For the given survey, those who responded to the survey forms a a sample as it is a part of 356 surveys that is a subset of population.

The correct answer is

Option b) Sample

Answer:

100

Step-by-step explanation:

Answer:

25,000

Step-by-step explanation:

Answer:

seven eights mean; 8888888

they can repave one fifty six mile per hour; 156/hour

Step-by-step explanation:

To calculate total time to repave

8888888/156 = 56980.02 hours require

Answer:

The answer is:

22 tacos per tray

Step-by-step explanation:

Number of trays:

Number of Tacos is 88:

Put 22 Taco's in each tray:

Tray 1.  22 Tacos

Tray 2. 22 Tacos

Tray 3. 22 Tacos

Tray 4. 22 Tacos

Example of dividing:

All 4 trays Add up to 88 tacos total

I hope this helped! <3

Answer: $4,884.75

Step-by-step explanation:

The formula for determining simple interest is expressed as

I = PRT/100

Where

I represents interest paid on the amount deposited.

P represents the principal or amount deposited.

R represents interest rate

T represents the duration of the savings in years.

From the given information,

P = 4500

R = 2.85

T = 3 years

I = (4500 × 2.85 × 3)/100 = $384.75

The total amount that they will have in savings after 3 years is

4500 + 384.75 = $4884.75

The required function that represents the situation is [tex]y=800(\frac{1}{4} )^t[/tex]

The standard exponential function is expressed as:

[tex]y=ab^x[/tex] where:

Given the following parameters:

a = 800

b = 1/4

Substitute into the formula to have;

[tex]y=800(\frac{1}{4} )^t[/tex]

Hence the required function that represents the situation is [tex]y=800(\frac{1}{4} )^t[/tex]

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Answer:

It's 800(3/4)^t

Step-by-step explanation:

Answer:

Ethan can type 12 pages before the meeting starts.

Step-by-step explanation:

Given:

Number of pages he can type =2

Number of hours he can type 2 pages = [tex]\frac{1}8\ hrs[/tex]

We need to find number of pages he can type in [tex]\frac34\ hrs[/tex]

Solution:

Now first we will  find number of pages in 1 hour

So we can say;

In [tex]\frac{1}8\ hrs[/tex]  = 2 pages

In 1 hour = number of pages he can type in 1 hour

By Using Unitary method we get;

number of pages he can type in 1 hour = [tex]\frac{2}{\frac18} =\frac{2\times8}{1}=16\ pages[/tex]

Now we can say that;

In 1 hour = 16 pages

So [tex]\frac34\ hrs[/tex] = number of pages he can type in [tex]\frac34\ hrs[/tex]

Again By using Unitary method we get;

number of pages he can type in [tex]\frac34\ hrs[/tex] = [tex]16\times \frac34 = 12\ pages[/tex]

Hence Ethan can type 12 pages before the meeting starts.

Final answer:

Ethan has 3/4 hours to type and can complete two pages every 1/8 hour, resulting in a total of 12 pages typed before the meeting starts.

Explanation:

Ethan can type two pages every 1/8 hour. To find out how many pages he can type before the start of the meeting, we need to calculate the total pages he can type in the waiting time of 3/4 hours. Here's the step-by-step calculation:

Calculate the number of 1/8 hour intervals in 3/4 hours by dividing: (3/4) ÷ (1/8) = (3/4) × (8/1) = 6.

Since he types two pages every 1/8 hour, we find the total number of pages by multiplying the number of intervals by 2: 6 × 2 = 12 pages.

Therefore, Ethan can type a total of 12 pages before the meeting starts.

Answer:

c)

Step-by-step explanation:

α also known as type I error depicts the probability of rejecting the true null hypothesis. So, when α=0.05 then it means that there is 5% probability or chance of rejecting the true null hypothesis.

So, in hypothesis testing α=0.05 means that there is a maximum 5 percent chance that a true null hypothesis will be rejected.

Step-by-step explanation:

The given geometric sequence:

- 8, - 40, - 200, - 1000

Here, first term(a) = - 8, common ration(r) = [tex]\dfrac{-40}{-8}[/tex] = 5

To find, an explicit formula for the given geometric sequence = ?

We know that,

The explicit formula for the geometric sequence

[tex]a_{n} =ar^{n-1}[/tex]

∴ An explicit formula for the given geometric sequence

[tex]a_{n} =(-8)(5)^{n-1}[/tex]

[tex]a_{n} =\dfrac{-8}{5} (5)^{n}[/tex]

∴ An explicit formula for the given geometric sequence, [tex]a_{n} =\dfrac{-8}{5} (5)^{n}[/tex]

Answer:

what the guy above me said

Step-by-step explanation:

The coordinates of X are (5, 11).

Solution:

Given points of the line segment are P(2, 2) and T(7, 17)  

Let X be the point that partitions the directed line segment PT in the ratio 3 : 2

Using section formula, we can find the coordinate of the point that partitions the line segment.

Section formula:

[tex]$X(x, y)=\left(\frac{m x_{2}+n x_{1}}{m+n}, \frac{m y_{2}+n y_{1}}{m+n}\right)[/tex]

Here, [tex]x_{1}=2, y_{1}=2, x_{2}=7, y_{2}=17[/tex] and m = 3, n =2

Substitute these in the section formula,

[tex]$X(x, y)=\left(\frac{3 \times 7+2 \times 2}{3+2}, \frac{3 \times 17+2 \times 2}{3+2}\right)[/tex]

            [tex]$=\left(\frac{21+4}{5}, \frac{51+4}{5}\right)[/tex]

           [tex]$=\left(\frac{25}{5}, \frac{55}{5}\right)[/tex]

           [tex]=(5, 11)[/tex]

X(x, y) = (5, 11)

The coordinates of X are (5, 11).

Answer:

the order is Helen Olivia Francessca

Step-by-step explanation:

ik im late but i hop this helps C:

The order of percentage of correct questions from least to greatest.

80% < 84% < 88%

Helen < Olivia < Francesca.

The percentage is calculated by dividing the required value by the total value and multiplying by 100.

Example:

Required percentage value = a

total value = b

Percentage = a/b x 100

Example:

50% = 50/100 = 1/2

25% = 25/100 = 1/4

20% = 20/100 = 1/5

10% = 10/100 = 1/10

We have,

Number of questions in the test = 25.

Helen:

Percentage of the number of questions correct.

= 20/25 x 100

= 80%

Francesca:

Percentage of the number of questions correct.

= 22/25 x 100

= 88%

Olivia:

Percentage of the number of questions correct.

= 84%

Thus,

Arranging the percentage in increasing order.

80% < 84% < 88%

Helen < Olivia < Francesca.

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Answer:

Step-by-step explanation:

Triangle VWX is a right angle triangle.

From the given right angle triangle,

VX represents the hypotenuse of the right angle triangle.

With m∠X as the reference angle,

WX represents the adjacent side of the right angle triangle.

VW represents the opposite side of the right angle triangle.

To determine m∠X, we would apply

the tangent trigonometric ratio. It is expressed as

Tan θ = opposite side/adjacent side. Therefore,

Tan X = 2/1 = 1

m∠X = Tan^-1(1)

m∠X = 45°

Step-by-step explanation:

By Wien’s Law we have

              [tex]\lambda =\frac{2898}{T}[/tex]

          where λ is in μm and T is in K

Given that

             T = 6000 K

Substituting

              [tex]\lambda =\frac{2898}{6000}=0.483\mu m[/tex]

Option C is the correct answer.

Final answer:

By using Wien's Law with the given temperature of the Sun (6000K), we calculate the peak emission wavelength as 0.483 micrometers, which corresponds to option c. 0.48 µm.

Explanation:

The student asked about the wavelength most emitted by the Sun as predicted by Wien's Law, given the temperature of 6000K using the equation λ = 2898/T, where λ is the wavelength in micrometers and T is the temperature in Kelvin. According to Wien's displacement law, the temperature and peak wavelength of emission of an object are inversely proportional.

Plugging in the given temperature (T = 6000K) into the equation λ = 2898/T, we calculate the peak emission wavelength to be 2898/6000 = 0.483 µm.

So, the correct answer is c. 0.48 µm.

Answer: D

Step-by-step explanation:

it makes the most sense ( do ont know how to explain but I do know it is right. )

Answer:

D.) No, product means multiplication, and the student wrote a division expression.

Step-by-step explanation:

did the assignment. good luck! <3

Answer: the shortest side is 10 centimeters.

The length of each of the other sides is 10 centimeters each.

Step-by-step explanation:

Let x represent the length of the shortest side of the triangle.

Two sides of the triangle are each twice as long as the shortest side. This means that the length of the two sides would be 2x.

The perimeter of a triangle is the sum of each side of the triangle.

The puzzle piece in the shape of a triangle has perimeter 25 centimeters. This means that

x + 2x + 2x = 25

5x = 25

x = 25/5

x = 5

The length of each of the two sides is

2x = 2 × 5 = 10

The length of the shortest side of the triangle is 5 centimeters.

Let's denote the length of the shortest side of the triangle as "x" centimeters. According to the problem, the other two sides are each twice as long as the shortest side. Therefore, the lengths of the other two sides are "2x" centimeters each.

Now, we can use the information given about the perimeter to set up an equation:

Perimeter = Sum of all sides

Given that the perimeter is 25 centimeters:

25 = x + 2x + 2x

Now, combine like terms on the right side:

25 = 5x

To solve for x, divide both sides by 5:

x = 25 / 5

x = 5

So, the length of the shortest side of the triangle is 5 centimeters.

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Answer:

A) We are extrapolating. Extrapolation is dangerous because the pattern of data may change outside the x range.

Step-by-step explanation:

When we use a least-squares line to predict y values for x values beyond the range of x values found in the data, are we extrapolating or interpolating? Are there any concerns about such predictions? (Choose one)

A) We are extrapolating. Extrapolation is dangerous because the pattern of data may change outside the x range.

B) We are interpolating. There are no concerns about interpolation.

C) We are interpolating. Interpolation is dangerous because the pattern of data may change inside the x range.

D) We are extrapolating. There are no concerns about extrapolation.

The answer is A

assuming we are looking for the value of y within the range of x, we are interpolating. Take for instance, the range of  xi between 60 and 65, what is the value of y at point 62.5. This is interpolation.

But then we have the data sets of temperature of a particular place within 1 to 15 days in a month. if we are asked to look for its temperature on the 31st of that particular month, we are extrapolating, which might take a different pattern from the line of best bit

Using a least-squares line to predict y values for x values beyond the range of the data is called extrapolation. This process is risky because the pattern of data may change outside of the existing range, leading to inaccurate predictions.

When using a least-squares line to predict y values for x values beyond the range of x values found in the data, we are extrapolating. This is because we are making predictions outside of the range of the existing data set. However, extrapolation comes with certain risks. The pattern of the data may not remain constant beyond the data we have, leading to inaccurate predictions.

Therefore, answer A is the most accurate: 'We are extrapolating. Extrapolation is dangerous because the pattern of data may change outside the x range.'

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