Need help plz and thank u

The misleading about the data shown on the figure is the clas width

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

The histogram

On the histogram, we have the following readings

From the above, we can see that

The above readings are not consistent i.e. the class widths are not equal

Hence, the misleading about the data shown on the figure is the clas width

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The value of covariance cov(y1, y2) is -0.222

                      y1      

y2         0         1         2          Total

0          1/9      2/9     1/9          4/9

1          2/9      2/9      0            4/9

2          1/9        0       0            1/9

Total   4/9       4/9     1/9          1      

  marginal distribution of y2:

y2      P(y2)      y2P(y2)      y2^2P(y2)

0         4/9        0.0000        0.0000

1          4/9         0.4444        0.4444

2          1/9         0.2222        0.4444

total      1          0.66667       0.88889

E(y2) = 0.6667

E(y2^2) = 0.8889

Var(y2) = E(y2^2)-(E(y2))^2=0.4444

marginal distribution of y1  

y1       P(y1)       y1P(y1)      y1^2P(y1)

0         4/9       0.0000      0.0000

1          4/9        0.4444       0.4444

2          1/9         0.2222      0.4444

total  1.00          0.6667      0.8889

E(y1) = 0.6667

E(y1^2) = 0.8889

Var(y1)= σy = E(y1^2)-(E(y1))^2 = 0.4444

E(XY) =∑xyP(x,y)=0.2222

Cov(y1,y2) = -0.222

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The number of teenagers who gave data for the survey was 52 teenagers .

The number of teenagers who ate red meat at least once a week was 50 teenagers.

The percentage that ate red meat more than twice per week was 77 %.

The distribution can be described as normal.

The number of teenagers in the survey :

= ∑ ( Frequency of number of times meat eaten )

= 2 + 3 + 7 + 9 + 10 + 8 + 7 + 5 + 1

= 52 teenagers

Number of teenagers eating at least once a week :

= ( 52 total - 2 eating zero times )

= 50 teenagers

Percentage eating red meat more than twice :

= ( 52 total - 2 eating zero times - 3 eating once - 7 eating twice ) / 52 x 100 %

= 77 %

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Answer:

The circle on the far left is the sum of 4x + 3y and 2x - y so the answer is 4x + 3y + 2x - y = 6x + 2y. The circle on the far left is the sum of x + 4y and something. To find that "something" we can do 4x + 5y - (x + 4y) = 3x + y which is the value of the bottom right rectangle. This means that the value of the bottom circle is 2x - y + 3x + y = 5x.

Answer:

Step-by-step explanation:

left circle=4x+3y+2x-y=6x+2y

right  bottom rectangle=4x+5y-(x+4y)=4x+5y-x-4y=3x+y

Bottom circle=2x-y+3x+y=5x

Answer:

/sorry/

Step-by-step explanation:

How to solve your problem

(1)+(12⋅)=18

\frac{x}{(\frac{1}{x})}+(\frac{1}{2} \cdot x)=18

(x1​)x​+(21​⋅x)=18

Solve

1

Combine multiplied terms into a single fraction

(1)+(12)=18

\frac{x}{(\frac{1}{x})}+(\frac{1}{2}x)=18

(x1​)x​+(21​x)=18

(1)+(12)=18

\frac{x}{(\frac{1}{x})}+(\frac{1x}{2})=18

(x1​)x​+(21x​)=18

2

Multiply by 1

3

Eliminate redundant parentheses

Solution

(1)+2=18

Answer: 130 dollars because 26 times 5 is 130 and 5 stands for 50 people

Assuming each family had one car, 2 people would cost $10, 4 would cost $14, 10 would cost $26.

Let me know if you want me to expand further... Happy to help :)

Brainliest please

Step-by-step explanation:

Answer: 519 120

Step-by-step explanation:

84*84=7056

7056/7=1008

1008*515=519 120

Answer:

(X'U'Y) + (XUY')

Step-by-step explanation:

Starting with [Xn(X'nY)]', we can use De Morgan's laws to simplify the expression:

[Xn(X'nY)]' = (Xn)' + (X'nY)'

Recall that Xn represents the logical operator "and", while X' represents "not X". Using these definitions, we can expand the expression:

(Xn)' + (X'nY)' = (X'U'Y) + (XUY')

where U represents the logical operator "or".

Therefore, [Xn(X'nY)]' simplifies to (X'U'Y) + (XUY').

Answer:

Step-by-step explanation:

(3-2)/(3-5) = 1/-2 = -1/2

y - 3 = -1/2(x - 3)

y - 3 = -1/2x + 3/2

y - 6/2 = -1/2x + 3/2

y = -1/2x + 9/2

Applying the relations given, considering equivalent angles, the trigonometric measures for the angles are given as follows:

The sine of 240º can be written as follows:

sin(240º) = sin(180º + 60º).

Applying the first relation given on the second line, we have that:

sin(180º + 60º) = -sin(60º)

It is known that sin(60º) = sqrt(3)/2, hence the sine of 240º is given as follows:

sin(240º) = -sin(60º) = -sqrt(3)/2.

The cosine of 225º can be written as follows:

cos(225º) = cos(180º + 45º).

Applying the second relation given on the second line, we have that:

cos(180º + 45º) = -cos(45º)

It is known that cos(45º) = sqrt(2)/2, hence:

cos(225º) = -cos(45º) = -sqrt(2)/2.

The tangent of 225º can be written as follows:

tan(225º) = tan (180º + 45º).

Applying the third relation given on the second line, we have that:

tan(180º + 45º) = tan(45º)

It is known that tan(45º) = 1, hence:

tan(225º) = tan(45º) = 1.

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Answer:

r = 7.1 cm

Step-by-step explanation:

Given the following data;

Volume of hemisphere = 757 cm³

To find the radius of the hemisphere;

Mathematically, the volume of a hemisphere is given by the formula;

Volume of hemisphere = ⅔πr³

Where, r is the radius of the hemisphere.

π = 22/7

Substituting into the formula, we have;

757 = ⅔πr³

Cross-multiplying, we have;

757 * 3 = 2πr³

2271 = 2*22/7*r³

2271 = 44/7*r³

Cross-multiplying, we have;

2271 * 7 = 44r³

15897 = 44r³

r³ = 15897/44

r³ = 361.30

Taking the cube root of both sides, we have;

r = 7.1223

To the nearest tenth of a centimeter;

r = 7.1 cm

Answer:

39 3/8 ft ^2

Step-by-step explanation:

To find the area of a rectangle, multiply the length times the width.

A = l*w

  = 7 1/2  * 5 1/4

Change the mixed numbers to improper fractions.

A = 15/2 * 21/4

    =315/8

Change back to a mixed number.

8 goes into 315 39 times with 3 left over.

 = 39 3/8

Answer:

(you can round to 39.4)

Step-by-step explanation:

Find the area of the rectangle shown

7 1/2 ft

5 1/4ft

7 1/2 = 7.5 ft

5 1/4 = 5.25 ft

Area = L x W

Area = 7.5 x 5.25

Area = 39.375

Answer:

See below

Step-by-step explanation:

We have the series

\($\sum _{ n=0 }^{ \infty }{ 3(0.8)^n}$\)

(a) To show that the sum of first \(n\) terms is \(S_n= 15(1-0.8^n)\)

Consider that the this sum is given as

\(S_n = 3\dfrac { 1-{ r }^n}{ 1-r }\)

In this case, the ratio is 0.8, thus, \(r=0.8\)

\(S_n = 3\dfrac { 1-{ 0.8 }^n }{ 1-0.8 }\)

\(3\dfrac { 1-{ 0.8 }^{ n } }{ 1-0.8 } = 15(1-0.8^n) \iff 3(1-{ 0.8 }^{ n }) = 15(1-0.8^n)( 1-0.8) \iff 3 = 15(1-0.8) \iff 3 = 15-12 = 3\)

Therefore,

\(S_n = 3\dfrac { 1-{ 0.8 }^n }{ 1-0.8 } = 15(1-0.8^n)\)

\(\dfrac{S_6}{S_4} = \dfrac{15(1-0.8^6)}{15(1-0.8^4)} = \dfrac{(1-0.8^6)}{(1-0.8^4)} = \dfrac{0.737856}{0.5904} = \dfrac{737856}{5904} = \dfrac{144\cdot 5124}{144\cdot 41} = \boxed{\dfrac{5124}{41} }\)

(b) Calculate the smallest integer value of \(n\) such that \(S_{40} -S_n < \dfrac{1}{2}\)

Once \(S_{40} \approx 15 \text{ and } S_n>14.5, \text{ thus } S_{40} \approx S_n, \text{ but } n \text{ is considerably smaller than 40}\)

I am considering \(S_{40}=15\), so

\(15-15(1-0.8^n) < \dfrac{1}{2} \implies 0.8^n < 0.03 \implies n> 15.71\)

\(\text{Once } n\in\mathbb{Z}, \text{ then } n=16\)

Answer:

$40.00 is the answer

Step-by-step explanation:

also can you mark me as a brainlist if you get a chance

Answer: $40.00

Step-by-step explanation:

12 is 30% of 40

Answer:

The answer would be 4

Step-by-step explanation:

2/3=x/10-x

(cross multiply)

2(10-x)=3x

20-2x=3x

20=5x

(divide by 5)

x=4 (That would be the answer You welcome.)

Fill in the blank 4

For the given triangle the value of x = 4.

In the given figure,

The triangles, ABC and DBE are similar

Since we know that,

Triangles that are similar to one another in shape but differ in size are known as similar triangles. Squares with any side length and all equilateral triangles are examples of related objects. In other words, if two triangles are similar, their corresponding sides are proportionately equal and their corresponding angles are congruent.

Therefore, we have the proportionality,

EC/BE = AD/DB

⇒ 2/3=x/10-x

After cross multiplying

⇒ 2(10-x)=3x

⇒ 20-2x=3x

⇒ 20=5x

Divide both sides by 5, and we get,

⇒  x = 4

Hence,

The value of x = 4.

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The percentage of fares for a cab company in Chicago that fall within certain standard deviation ranges from the mean fare from O'Hare Airport to the Drake Hotel is calculated Using Chebyshev's theorem:

What is standard deviation?

Standard deviation is a measure of the amount of variation or dispersion of a set of data values from their mean (average) value. In other words, it measures how spread out the data is from the average.

(a) According to Chebyshev's theorem, at least 75% of the fares lie between 20.87 dollars and 34.87 dollars.

(b) According to Chebyshev's theorem, at least 84% of the fares lie between $18.37 and $37.37. (Round your answer to 2 decimal places.)

(c) Suppose that the distribution is bell-shaped. According to the empirical rule, approximately 99.7% of the fares lie between $14.37 and $41.37.

(d) Suppose that the distribution is bell-shaped. According to the empirical rule, approximately 95% of the fares lie between 20.87 dollars and 34.87 dollars.

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Answer:

10x + 55

Hope this helps :)

the answer is 40 brainliest plz

The total weight of the liquid in the tank is approximately 12,628 pounds.

To calculate the weight of the liquid, we need to determine the volume of the hemisphere and then multiply it by the density of the liquid. The formula for the volume of a hemisphere is V = (2/3)πr³, where r is the radius of the hemisphere.

In this case, the diameter of the tank is given as 24 feet, so the radius is half of that, which is 12 feet. Plugging this value into the formula, we get V = (2/3)π(12)³ ≈ 904.78 cubic feet.

Finally, we multiply the volume by the density of the liquid: 904.78 cubic feet * 92.5 pounds per cubic foot ≈ 12,628 pounds. Therefore, the total weight of the liquid in the tank is approximately 12,628 pounds.

In summary, to calculate the weight of the liquid in the tank, we first determine the volume of the hemisphere using the formula V = (2/3)πr³. Then, we multiply the volume by the density of the liquid.

By substituting the given diameter of 24 feet and using the appropriate conversions, we find that the total weight of the liquid is approximately 12,628 pounds.

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Answer: 20

Step-by-step explanation:

Multiply 2.4*10-4

Calculate 24-4

the answer is (12x^10000)/5

Answer:

I don't know if you mean [3,-1] & [-5,3] or \(\left[\begin{array}{ccc}3&-1\\-5&3\end{array}\right]\)

The inverse for first ones are "none" because they're not square matrices.

However the inverse for \(\left[\begin{array}{ccc}3&-1\\-5&3\end{array}\right]\)  is  \(\left[\begin{array}{ccc}0.75&0.25\\1.25&0.75\end{array}\right]\).

Hope this helps.

Answer:

e-5=2f

take '-5' to the other side where '2f' is

e=2f+5

Answer:

rtrrrrrrrrrrrrrrrrrrrrrjj

Step-by-step explanation:

rtj

Answer:

It looks like (-1, ∞)

Step-by-step explanation:

The mean and variance of Z=2 are 1 and 0.5 respectively, and the probability that Z=2 is 0.25.

Let's first calculate the mean and variance of N as follows -

The mean of N is 6 * 0.5 = 3, since each nickel has a 0.5 probability of landing heads up.

The variance of N is 6 * 0.5 * 0.5 = 1.5.

Since N determines the number of dimes that are tossed, the mean and variance of Z will depend on N.

Let's assume N = 2, then Z is the number of tails observed when tossing 2 dimes.

Each dime has a 0.5 probability of landing tails up, so the mean of Z would be 2 * 0.5 = 1.

The variance of Z would be 2 * 0.5 * 0.5 = 0.5.

To find the probability that Z=2, we can use the binomial probability formula as follows -

P(Z=2) = \(\binom{2}{2} * (0.5)^2 * (1-0.5)^{(2-2)}\) = 0.25.

Hence, the probability that Z=2 is 0.25.

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The complete question is -

Six nickels are tossed, and the total number N of heads is observed. Then N dimes are tossed, and the total number of Z of tails among the dimes is observed. Determine the mean and variance of Z and the probability that Z=2.

Answer:

21.98

Step-by-step explanation:

Answer: y = -2/5x + 4

Steps:

First find the slope of the equation y=mx+b.

slope equation (m=y2-y1/x2-x1)

Then plug in your coordinates, which the first set is (5,2) and the second set if (-5,6). m = 6 - 2/ -5 - 5

Which your answer will be 4/-10, simplify it by dividing both by 2 to get -2/5 for your slope.

Next, find your y-intercept (b).

substitute the first set of coordinates into the equation y=mx+b

Substitute: 2 = -2/5 (5) +b

Then multiply -2/5 with 5 to get (-2). Your equation should now reduce to be

2 = -2 +b

Do inverse operations on both sides by adding 2 to each side (the 2 side and the -2+b side).

This gets rid of the -2 and since we added 2 to both sides, your final equation should look like 4 = b for your y-intercept.

Plug in everything to get y = -2/5x + 4

Answer:

Y = .2x + 6.95

Step-by-step explanation:

x = minutes, which is being multiplied every 20 cents.

Then the 6.95 is added to number of dollars

Answer:

Y=.25x+6.95

Step-by-step explanation:

Answer:

Without any data or research to draw from, it is impossible to make a reliable conclusion about male and female preferences for veggie pizza. Preferences for food can be influenced by a wide range of factors, including cultural background, personal tastes, dietary restrictions, and individual preferences.

However, if a study were conducted and significant differences were found between male and female preferences for veggie pizza, conclusions could be drawn based on the results of the study. For example, if the study found that a higher proportion of women than men preferred veggie pizza, the marketing team could consider adjusting their marketing strategy to target more women. Alternatively, if the study found that men preferred veggie pizza more than women, the marketing team could consider using this information to develop more effective targeted marketing strategies for male audiences. Ultimately, the conclusions that can be drawn about male and female preferences for veggie pizza (or any other type of food) are dependent on the data and research available.

Step-by-step explanation: