A line in the xy-plane passes through the origin and has a slope of 1/7 Which of the following points lies on the line?

A) (0, 7)
B) (1, 7)
C) (7, 7)
D) (14, 2)
E) (7, 14)

Answer:

See the plot below.

For this case we can consider as an outlier the value 8.0 since is far away from the other points

Step-by-step explanation:

For this case we can create the stem plot like this:

Stem      Leaf

 0      |     5 7

 1       |     1 2 2 3 3 5 5 7 7 8 9

 2      |     0 2 5 6 8 8 8

 3      |     5 8

 4      |     4 8 9

 5      |     2 5 7 8

 6      |

 7      |

 8      |    0

Notation : "1 |1 means 1.1 for example and 3|5 means 3.5"

By definition an outlier is "an observation that lies an abnormal distance from other values in a random sample from a population"

For this case we can consider as an outlier the value 8.0 since is far away from the other points

Answer:

Siham ran for 305 minutes

Step-by-step explanation:

Let

Siham Ran for time = X

Siham Ran for time = X-60

According to given condition

X + (X-60) = 670

X + X - 60 = 670

2X = 670-60

2X = 610

X = 610/2

X = 305

So Siham ran for 305 minutes only

ANSWER: Adult tickets: 200  Student tickets:400

STEP-BY-STEP EXPLANATION:

n = number of adult tickets sold

2n = number of student tickets sold

2n(1.25) + n(1.75) = $850

2.50n + 1.75n = $850

4.25n = $850

n = 200

2n= 2 × 200= 400

STEP-BY-STEP EXPLANATION:

Let be x the number of boxeds of crackers you can buy

If each box has a cost of $2.30 and you have $11.50

we can represent this into this equation

2.30x= 11.50

x=[tex]\frac{11.50}{2.30}[/tex]

x=5

You can buy 5 boxes of crackers

Answer:

The answer to your question is below

Step-by-step explanation:

Data

P (-5, 5)

Parallel to 6x - 5y - 9 = 0

Process

1.- Find the equation of the line

                  6x - 5y = 9

                       -5y = -6x + 9

                          y = -6/-5 x + 9/-5

                          y = 6/5 x - 9/5

slope = 6/5, as the lines are parallels, the slope is the same.

2.- Get the equation of the new line

                     y - y1 = m(x - x1)

                     y - 5 = 6/5 (x + 5)

                     y - 5 = 6/5x + 6

                          y = 6/5x + 6 + 5

                          y = 6/5x + 11                     Point-slope form

                   5y - 25 = 6(x + 5)

                   5y - 25 = 6x + 30

                   6x - 5y + 30 + 25 = 0

                  6x - 5y + 55 = 0                      General form

The equation of the line that passes through (-5,5) and is parallel to 6x - 5y - 9 = 0 can be written in point-slope form as y - 5 = (6/5)(x + 5) and in general form as -6x + 5y - 55 = 0.

To write an equation for the line that passes through the point (-5,5) and is parallel to the line 6x - 5y - 9 = 0, we first need to find the slope of the given line. By rewriting the equation in slope-intercept form (y = mx + b), we can identify the slope (m). The equation 6x - 5y - 9 = 0 can be rewritten as y = (6/5)x + 9/5, so the slope of the line is 6/5. Since parallel lines have the same slope, the slope of our new line is also 6/5.

Next, we use the point-slope form of the equation, which is y - y1 = m(x - x1), where (x1, y1) is a point on the line (here (-5,5)) and m is the slope. Substituting these values into the equation gives us y - 5 = (6/5)(x + 5).

To express this in general form (Ax + By + C = 0), we rearrange the equation: multiply both sides by 5 to clear the fraction, resulting in 5(y - 5) = 6(x + 5), which simplifies to 5y - 25 = 6x + 30. Rearranging gives -6x + 5y - 55 = 0.

Answer:

Don't worry friend! I am here to help you!

Step-by-step explanation:

I tried answering as many questions as I could, but the ones I didn't answer, I didn't know how to solve.

Please understand that I am here to help you and others on brainly!

I hope this makes you feel better!

- sincerelynini

Answer:

The answer to your question is 12 monitors

Step-by-step explanation:

Data

v = monitors weighing 25 lb

f = monitors weighing 40 lb

Total weight = 680 lb

Total monitors = 20

Process

1.- Write equations

         v + f = 20          ------------------ (l)

       25v + 40f = 680  -----------------(II)

2.- Solve the system by elimination

Multiply equation l by -25

       -25v -  25f  = - 500

        25v + 40f =    680

          0    + 15 f = 180

Solve for f

                       f = 180 / 15

                       f = 12

3.- Find the value of v

          v + 12 = 20

          v = 20 - 12

          v = 8

4.- Conclusion

      There are 12 monitors weighing forty lb

       There are 8 monitors weighing 25 lb

Answer:

(0.2599,0.3401)                                                

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 500

x = 150

[tex]\hat{p} = \dfrac{x}{n} = \dfrac{150}{500} = 0.3[/tex]

Confidence interval:

[tex]\hat{p}\pm z_{stat}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}[/tex]

[tex]z_{critical}\text{ at}~\alpha_{0.05} = \pm 1.96[/tex]

Putting the values, we get:

[tex]0.3\pm 1.96\sqrt{\dfrac{0.3(1-0.3)}{500}} = 0.3 \pm 0.0401 =(0.2599,0.3401)[/tex]

The 95% confidence interval is (0.2599,0.3401).

Answer:

side length is [tex]\frac{20\sqrt{3} }{3}[/tex] feet

Step-by-step explanation:

An equilateral triangle has a height of 10 feet.  the height of the triangle is the perpendicular bisector to the base

so it forms a two right angle triangle

the triangle formed is a 30-60-90 degree triangle

the diagram is attached below

Let x be the side if the equilateral triangle

sin(theta)=opposite by hypotenuse

[tex]sin(60)=\frac{10}{x}[/tex]

[tex]\frac{\sqrt{3}}{2} =\frac{10}{x}[/tex]

cross multiply

[tex]\sqrt{3} x=20[/tex]

[tex]x=\frac{20}{\sqrt{3} } =\frac{20\sqrt{3} }{3}[/tex]

The length of the side of an equilateral triangle with a height of 10 feet is approximately 11.54 feet. This is determined by applying the properties of a 30-60-90 triangle which is a half of an equilateral triangle.

The problem is asking to solve for the side (s) of an equilateral triangle given the height (h). An equilateral triangle can be divided into two 30-60-90 right triangles. In such a triangle, the ratio between the hypotenuse (which is the side of the equilateral triangle) and the longer leg (which is half of the height) is 2:√3. Therefore, if the height is 10 feet, then the side length would be (2/√3)*h.

Step 1: Recognize that the triangle is a 30-60-90 triangle.

Step 2: Apply the ratio between the sides in a 30-60-90 triangle, 2:√3.

Step 3: Multiply the height by 2/√3 to get the length of one side which equals about 11.5 feet.

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The model shown in the graph describes a piece rate. Correct option is D.

Let us take a point (3, 60) in the given graph.

The function which model this is y=kx.

Let us plug in y as 60 and x as 3.

60=3k

Divide both sides by 3:

k=20

So, y=20x.

The model is proportional function, if the x value increases then y value increases.

Similarly, if x value decreases the y value decreases.

Hence, the model shown in the graph describes a piece rate. option D is correct.

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Answer:

Hourly pay without a bonus

Step-by-step explanation:

I just took the test

Answer:

[tex]x^{4}[/tex] + 3x² - 4

Step-by-step explanation:

Note that complex zeros occur in conjugate pairs

If 2i is a zero then - 2i is a zero

The zeros are x = 1, x = - 1, x = 2i, x = - 2i, thus the factors are

(x - 1), (x + 1), (x - 2i) and (x + 2i)

The polynomial is expressed as the product of the factors, thus

f(x) = (x - 1)(x + 1)(x - 2i)(x + 2i) ← expanding in pairs

     = (x² - 1)(x² - 4i²) → i² = - 1

     = (x² - 1)(x² + 4) ← distribute

     = [tex]x^{4}[/tex] + 4x² - x² - 4

     = [tex]x^{4}[/tex] + 3x² - 4

Final answer:

After 100 days, there will be approximately 7.18 bacteria present.

Explanation:

To determine the number of bacteria that will be present after 100 days, we need to calculate the exponential growth of the bacteria. The bacteria reproduce at a rate of 4% per day, which means the population will double every 25 days (since 100 divided by 4 is 25).

To calculate the final population, we can use the formula N = N₀ * [tex](1 + r/100)^t[/tex], where N is the final population, N₀ is the initial population, r is the growth rate, and t is the time in days.

In this case, the initial population is 2 (assuming there are initially only two bacteria), the growth rate is 4%, and the time is 100 days.

Plugging in these values,

we get [tex]N = 2 * (1 + 4/100)^{100} = 2 * (1.04)^{100}[/tex]nal population of approximately 7.18 bacteria. Therefore, there will be approximately 7.18 bacteria present after 100 days.

Answer:

Step-by-step explanation:

Let x represent the number of farmers that grew all three crops.

Let y represent the number of farmers that grew corn and oat.

The Venn diagram representing the scenario is shown in the attached photo.

W represents the subset for wheat

C represents the subset for corn

O represents the subset for oat

199 grew wheat. It means that

121 + 57 - x + x + 60 - x = 199

238 - x = 199

x = 238 - 199

x = 39

182 grew corn. It means that

113 + 60 - x + x + y - x = 182

173 + y - x = 182

y = 182 - 173 + 39

y = 48

a) the number of farmers who grew at least one of the three would be

121 + 113 + 90 + 57 - x + 48 - x + 60 - x + x

= 121 + 113 + 90 + 57 - 39 + 48 - 39 + 60 - 39 + 39 = 411

b) the number of farmers that grew all three would be

x = 39

c) the number of farmers who did not grow any of the three would be

500 - 411 = 89

d) the number of farmers who grew exactly two of the three would be

60 - x + 57 - x + 48 - x

= 60 - 39 + 57 - 39 + 48 - 39

= 21 + 18 + 9

= 48

The number of farmers who grew at least one of the crops is 328, all three is not stated, none of the three is 172 and exactly two of them is 117.

To solve this problem, we have to understand Venn Diagrams and set theory. When adding up counts for different categories, it is important to not double count any item.

The number of farmers who grew at least one of three crops (wheat, corn, oats) can be determined by the sum of all the individual and intersection categories. However, we subtract the counts that have been mentioned twice.

a) At least one: (121 wheat only + 113 corn only + 90 oats only + 199 wheat + 60 wheat&corn + 57 wheat&oats + 182 corn) - (2*(60 wheat&corn) + 2*(57 wheat&oats) + 2*(182 corn&-)) = 328

b) All three: There is no clear information about farmers growing all three crops. We may assume it to be 0, as it is not stated.

c) None of three: The survey includes 500 farmers, if 328 grow at least one crop, then the number of farmers that did not grow any of the three is 500 - 328 = 172

d) Exactly two: 60 grew wheat and corn, 57 grew wheat and oats. Hence 117 farmers grew exactly two of the three crops.

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Answer:

0.33

Step-by-step explanation:

So we find the difference between the price of milk at 6 storms and the price of milk at 3 storms.

3.88 - 2.89= 0.99

Then we divide the difference by 3 to find the average rate of change for each storm between 3 to 6.

0.99 ÷3= 0.33

So the answer is 0.33.

The average rate of change from 3 to 6 storms is 0.33

A correlation exists as a statistical measurement that expresses the extent to which two variables are linearly related (suggesting they change together at a constant rate). It's a familiar tool for defining simple relationships without making a statement about cause and effect.

To solve this example use this rule :

Δx/Δy

x exists the amount that changed. so Δx=0,99.

The storm stands to 3 to 6 so find the difference for x: for the 3rd and 6th members of the table... 3.88-2.89=0.99

Now,

0.99/Δy

Because require to find from 3 to 6, Δy=3,

When finding both, rate of change with :

0.99/3=0.33.

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Answer:

3. Test Statistic

A test statistic is a numerical quantity computed from the data of a sample and is used in reaching a decision on whether or not to reject the null hypothesis.

The numerical quantity computed from the data of a sample and used in reaching a decision on whether or not to reject the null hypothesis is called; 3.Test statistic.

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Answer: Its True

Step-by-step explanation:

The statement is true because the Percentages are preferred and also they are easier to compare than counts.

Answer:

The regular price of the car is $13,000.

Step-by-step explanation:

i) let the price of the van Andy and Diane want to buy be $x.

ii) they get $5,500 for their present car

iii) they also make a down payment of $2,300.

iv) therefore $x = $0.4x + $5,500 +  $2,300

   therefore $0.6x = $7,800

therefore $x = $[tex]\frac{7800}{0.6}[/tex] = $13,000

The regular price of the car is $13,000.

Answer:

a) The problem says that this represent the values within 3 deviations from the mean and using the empirical rule we know that on this case we have 68% of the data on this interval.

b) For this case we can use the z score formula again:

[tex] z_1= \frac{98.73-98.38}{0.48}=0.729[/tex]

[tex] z_2= \frac{97.89-98.38}{0.48}=-1.020[/tex]

For this case we want this probability:

[tex] P(97.89<X<98.73) =P(-1.02<Z<0.729)= P(Z<0.729)-P(Z<-1.02)=0.767-0.154= 0.613[/tex]

So the approximate percentage of temperatures between 97.89F and 98.73F is 61.3%

Step-by-step explanation:

The empirical rule, also referred to as "the three-sigma rule or 68-95-99.7 rule, is a statistical rule which states that for a normal distribution, almost all data falls within three standard deviations (denoted by σ) of the mean (denoted by µ)". The empirical rule shows that 68% falls within the first standard deviation (µ ± σ), 95% within the first two standard deviations (µ ± 2σ), and 99.7% within the first three standard deviations (µ ± 3σ).

For this case we know that the body temperatures for a group of heatlhy adults represented with the random variable X follows this distribution:

[tex] X \sim N(\mu =98.38F, \sigma=0.48 F)[/tex]

Part a

For this case we can use the z score formula to measure how many deviations we are within the mean, given by:

[tex] z=\frac{x-\mu}{\sigma}[/tex]

If we find the z score for the values given we got:

[tex] z_1= \frac{99.57-98.38}{0.48}=2.479[/tex]

[tex] z_2= \frac{97.05-98.38}{0.48}=-2.771[/tex]

The problem says that this represent the values within 3 deviations from the mean and using the empirical rule we know that on this case we have 68% of the data on this interval.

Part b

For this case we can use the z score formula again:

[tex] z_1= \frac{98.73-98.38}{0.48}=0.729[/tex]

[tex] z_2= \frac{97.89-98.38}{0.48}=-1.020[/tex]

For this case we want this probability:

[tex] P(97.89<X<98.73) =P(-1.02<Z<0.729)= P(Z<0.729)-P(Z<-1.02)=0.767-0.154= 0.613[/tex]

So the approximate percentage of temperatures between 97.89F and 98.73F is 61.3%

Stem and Leaf plot would be the best choice to display the given data if we want to display the numbers which are outliers as well as the mean.

Hence option C is correct.

Given, representation of outliers and mean.

Data: [4, 1, 3, 10, 18, 12, 9, 4, 15, 16, 32]

Stem and Leaf plot would be the best choice to display the given data if we want to display the numbers which are outliers as well as the mean.

Therefore option C is correct.

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Options for question :

1) Pie Graph

2) Bar Graph

3) Stem and Leaf Plot

4) Line Chart

5) Venn Diagram

A box and whisker plot is the best choice to display data including outliers and the mean in mathematics. It clearly shows the median, quartiles, and outliers. The mean can be depicted as an additional point.

In the field of mathematics, to display the data with outliers and the mean, a box and whisker plot is the most suitable graph. This type of graph can highlight outliers and also show the mean. For instance, our given data [4, 1, 3, 10, 18, 12, 9, 4, 15, 16, 32] when plotted on a box and whisker plot would display the median (the line inside the box), the quartiles (the ends of the box), and outliers (points outside the whiskers). The mean can additionally be added as a separate point on the plot.

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Answer:

x=11

Step-by-step explanation:

[tex]\frac{5x}{3x-3} =\frac{44}{24} =\frac{11}{6} \\33x-33=30x\\33x-30x=33\\3x=33\\x=11[/tex]

Answer:

89.04% of the data points will fall in the given range of z = − 1.6 and z = 1.6      

Step-by-step explanation:

We are given a normally distributed data.

We have to find the percentage of data that lies within the range  z = − 1.6 and z= 1.6

Formula:

[tex]z_{score} = \displaystyle\frac{x-\mu}{\sigma}[/tex]

[tex]P(-1.6 \leq z \leq 1.6)\\= P(z \leq 1.6) - P(z \leq -1.6)\\\text{Calculating the value from standard normal table}\\= 0.9452 - 0.0548 = 0.8904= 89.04\%[/tex]

89.04% of the data points will fall in the given range of z = − 1.6 and z= 1.6

Final answer:

Approximately 89.04% of data points fall within 1.6 standard deviations of the mean in a normally distributed set, calculated using the empirical rule and Z-table for the standard normal distribution.

Explanation:

To find the percentage of data points that fall between z-scores of -1.6 and 1.6, we use the properties of the standard normal distribution. Based on the empirical rule (also known as the 68-95-99.7 rule), we know that approximately 68% of data points lie within 1 standard deviation, 95% within 2 standard deviations, and 99.7% within 3 standard deviations of the mean in a normal distribution.

Since our z-scores are between -1 and 2, we will look at the percentages for these intervals. Typically, a z-score of 1.6 would correspond to a value between the percentages for 1 and 2 standard deviations from the mean. Using a Z-table or standard normal distribution curve calculator, we find that a z-score of 1.6 gives us approximately 0.4452 (or 44.52%) to the left of the z-score and 0.4452 to the right. Therefore, the total area between -1.6 and 1.6 is 2 × 0.4452, which is approximately 0.8904 (or 89.04%). Thus, approximately 89.04% of the data points will fall within 1.6 standard deviations from the mean in a normally distributed data set.

9514 1404 393

Answer:

  each has to work 5 hours and earn $42

Step-by-step explanation:

Let m and h represent hours Nai spends mowing and hauling, respectively. Then (m+h) will be the number of hours Priya spends babysitting. In order for their earnings to be equal, we must have ...

  7m +14h = 8.40(m+h)

  5.60h = 1.40m . . . . . . . . subtract 7m+8.40h

  m = 4h . . . . . . . . . . . . . . divide by 1.40

Then the total number of hours worked by either person is ...

  m + h = (4h) +h = 5h

If only whole numbers of hours are worked, then the smallest number of hours that will make earnings equal is 5h, with h=1, or 5 hours. In that time, each will earn 5×$8.40 = $42.

Each must work 5 hours and earn $42 before they go to the movies.

__

Nai will work 4 hours mowing and 1 hour hauling.

Priya and Nai have to work 0 hours before they go to the movies.

To find out how much money Priya and Nai each have to work before they go to the movies, we need to set up an equation. Let x represent the number of work hours for both Priya and Nai. Nai earns $7 per hour, so her earnings in x hours would be 7x dollars. Priya earns $8.40 per hour, so her earnings in x hours would be 8.40x dollars. Since they want to earn the same amount, we can set up the equation:

7x = 8.40x

To solve for x, we can subtract 7x from both sides of the equation:

0.40x = 0

Now, divide both sides of the equation by 0.40 to solve for x:

x = 0 / 0.40

x = 0

Therefore, both Priya and Nai have to work 0 hours before they go to the movies. This means they have already earned the same amount of money.

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Answer:

The sampling used is simple random sampling.

Step-by-step explanation:

Consider the provided information.

Types:

Here, randomly selected 60 customers, Thus, the sampling used is simple random sampling.

Answer: [tex]137\dfrac{1}{3}\ cm,\ 137\dfrac{1}{3}\ cm,\ 250\dfrac{1}{3}\ cm[/tex]

Step-by-step explanation:

Let x be the equal sides of the triangle .

The , the third side would be x+113 cm.

The perimeter is the sum of all sides of a triangle.

So , The perimeter of triangle would be  x+x+(x+113)= 3x+113 --------(1)

Since , it is given that the perimeter of triangle is 525. -----(2)

So from (1) and (2) , we have

[tex]3x+113=525\\\\ 3x=525-113=412\\\\ x=\dfrac{412}{3}=137\dfrac{1}{3}[/tex]

Then, third side = [tex]137\dfrac{1}{3}+113=250\dfrac{1}{3}\ cm[/tex]

Hence , the sides of a triangle  are:[tex]137\dfrac{1}{3}\ cm,\ 137\dfrac{1}{3}\ cm,\ 250\dfrac{1}{3}\ cm[/tex]

Answer: 1 16/45, 1 16/45, 2 31/45

Step-by-step explanation:

Say x is the equal side of the triangle.

The third side would be x+113 cm.

The perimeter is the sum of all sides of a triangle.

So, the perimeter of the triangle would be  x+x+(x+113)= 3x+113

Since the triangle's perimeter is 5 2/5, 3x + 1 1/3 = 5 2/5.

1 1/3 is 1 5/15. 5 2/5 is 5 6/15. 5 6/15 - 1 5/15 = 4 1/15.

This means 3x = 4 1/15.

4 1/15 = 61/15

3x = 61/15

To make 3x into x, you can multiply it by 1/3.

3x*1/3 is x. 61/15*1/3 = 61/45.

x = 1 16/45 because 61/45 = 1 16/45.

The longer side is x + 1 1/3 so you have to add 1 1/3 to 1 16/45 which is

2 31/45.

So, the sides are 1 16/45, 1 16/45 and 2 31,45.

Answer:

XY is 4 units.              

Step-by-step explanation:

We are given the following in the question:

Right triangle ABC is similar to triangle XYZ.

AB = 20.8 units

BC = 36.4 units

YZ = 7 units

We have to find the length of side XY.

Since the given triangles are similar, they have the following property:

The ratio of corresponding sides of similar triangles are equal.

We can write,

[tex]\displaystyle\frac{AB}{XY}=\frac{BC}{YZ}=\frac{AC}{XZ}[/tex]

Putting the given values, we have,

[tex]\displaystyle\frac{AB}{XY}=\frac{BC}{YZ}\\\\\frac{20.8}{XY}=\frac{36.4}{7}\\\\XY = \frac{20.8\times 7}{36.4} =4 \text{ units}[/tex]

Thus, the length of XY is 4 units.

Answer:

The number is 226.

Step-by-step explanation:

Let the number be x.

Given:

The number is greater than two hundred twenty-five.

So we can say that;

[tex]x>225[/tex] equation 1

Also Given:

Her number is less than 2 hundreds,2 tens, and 7 ones.

Now we can say that 2 hundreds,2 tens, and 7 ones is equal to 227

So now the number is less than 227.

[tex]x<227[/tex] equation 2

From equation 1 and equation 2 we can say that;

[tex]225<x<227[/tex] equation 3

Also,

[tex]225<226<227[/tex] equation 4

Comparing equation 3 and 4 we get;

[tex]x=226[/tex]

Hence The number is 226.

Answer:

[tex]MG=56\ units[/tex]

Step-by-step explanation:

step 1

Find the value of x

we know that

If two triangles are similar, then the ratio of its corresponding sides is proportional and its corresponding angles are congruent

In this problem we have that

∆EGF~∆EML

so

[tex]\frac{EG}{EM}=\frac{EF}{EL}[/tex]

substitute the given values

[tex]\frac{5x+2}{16}=\frac{126}{28}[/tex]

solve for x

[tex]5x+2=\frac{126}{28}(16)[/tex]

[tex]5x+2=72\\5x=70\\x=14[/tex]

[tex]EG=5x+2=5(14)+2=72\ units[/tex]

step 2

Find MG

we know that

[tex]MG=EG-EM[/tex]

substitute

[tex]MG=72-16=56\ units[/tex]

Answer:

48 liters

Step-by-step explanation:

You should multiply the number of containers by the number of liters in each container.

12 x 4 = 48

Pam brought 48 liters of water to the soccer game.

Answer:

Step-by-step explanation:

In our triangle, angles E + F + G = 180 degrees.  If angle E is 4 times the measure of F, and G is 18 less than E, then

F is x,

E is 4x, and

G is 4x - 18

Add these all together and set the sum equal to 180:

x + 4x + 4x - 18 = 180

Combining like terms:

9x - 18 = 180 and

9x = 196 so

x = 22

That means that

F = 22,

E = 4(22) = 88 and

G = 4(22) - 18 = 88 - 18 = 70

Since 22 + 88 + 70 do in fact equal 180 you can be fairly certain that your answer is correct! (It is correct...trust me!)

Answer:

yo is ya boi Nick you already know what it is yeah big daddy nick