f the mean is greater than the median in a distribution which of following statements are true? (choose one or more) group of answer choices a. the distribution is positively skewed b. the distribution is negatively skewed c. the right tail is longer than the left d. the left tail is longer than the right

Answers

Answer 1

When the mean is higher than the median, the distribution has a right-skewed pattern. Thus the statement 'a. the distribution is positively skewed' is the accurate one.

This indicates that the majority of the data are centered on the left and that the right is covered by a lengthy tail. The mean exceeds the median. In a positively skewed distribution, the mean overestimates the values that are most prevalent. The median is larger than the mean. In a distribution that is positively skewed, the mean—the average of all the values—is higher than the median since the data tends to be lower. The center value of the data is called the median, in comparison. As a result, if the data is more skewed towards the negative, the average will be higher than the middle number.

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Related Questions

Define a 3-chain to be a (not necessarily contiguous) subsequence of three integers, which is either monotonically increasing or monotonically decreasing. We will show here that any sequence of five distinct integers will contain a 3-chain. Write the sequence as a1, a2, a3, a4, a5. Note that a monotonically increasing sequences is one in which each term is greater than or equal to the previous term. Similarly, a monotonically decreasing sequence is one in which each term is less than or equal to the previous term. Lastly, a subsequence is a sequence derived from the original sequence by deleting some elements without changing the location of the remaining elements.
(a) [4 pts] Assume that a1 < a2. Show that if there is no 3-chain in our sequence, then a3 must be less than a1. (Hint: consider a4!)
(b) [2 pts] Using the previous part, show that if a1 < a2 and there is no 3-chain in our sequence, then a3 < a4 < a2.
(c) [2 pts] Assuming that a1 < a2 and a3 < a4 < a2, show that any value of a5 must result in a 3-chain.
(d) [4 pts] Using the previous parts, prove by contradiction that any sequence of five distinct integers must contain a 3-chain.

Answers

a3 is greater than or equal to a4, then the subsequence a1, a2, a4 would form a monotonically increasing 3-chain. Hence, a3 must be less than a4.  If a1 < a5 < a4, then the subsequence a1, a4, a5 would form a monotonically increasing 3-chain any value of a5 results in a 3-chain.any sequence of five distinct integers must contain a 3-chain.

(a) Assume that a1 < a2 and there is no 3-chain in our sequence. Then, a3 cannot be greater than or equal to a2 (otherwise, the subsequence a1, a2, a3 would form a monotonically increasing 3-chain). Similarly, a3 cannot be less than or equal to a2 (otherwise, the subsequence a3, a2, a1 would form a monotonically decreasing 3-chain). Therefore, a3 must be strictly between a1 and a2. Now, if a3 is greater than or equal to a4, then the subsequence a1, a2, a4 would form a monotonically increasing 3-chain. Hence, a3 must be less than a4.

(b) From part (a), we know that a3 < a1. Also, since there is no 3-chain, a3 < a4 < a2. Combining these inequalities, we get a3 < a4 < a2 and a3 < a1. Hence, a3 < a4 < a2 < a1.

(c) Assume that a1 < a2 and a3 < a4 < a2. If a5 is less than a4, then the subsequence a3, a4, a5 would form a monotonically decreasing 3-chain. If a5 is greater than a2, then the subsequence a2, a5, a4 would form a monotonically decreasing 3-chain. If a4 < a5 < a2, then the subsequence a3, a4, a5 would form a monotonically increasing 3-chain. If a1 < a5 < a4, then the subsequence a1, a4, a5 would form a monotonically increasing 3-chain. Therefore, any value of a5 results in a 3-chain.

(d) Assume that there is a sequence of five distinct integers with no 3-chain. Without loss of generality, we can assume that a1 < a2. From part (a), we know that a3 < a1. From part (b), we know that a3 < a4 < a2 < a1. From part (c), we know that any value of a5 results in a 3-chain. Therefore, we have a contradiction and our assumption is false. Hence, any sequence of five distinct integers must contain a 3-chain.

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Help me pls…………………..

Answers

The solution of the expression 2 x 2[tex]\frac{1}{5}[/tex] is 4.4.

What is multiplication?

Multiplication is a type of mathematical operation. The repetition of the same expression types is another aspect of the practice.

For instance, the expression 2 x 3 indicates that 3 has been multiplied by two.

Given:

Two fractions are 2 and 2[tex]\frac{1}{5}[/tex].

To find the product of two fractions:

Applying multiplication operation,

we get,

2 x 2[tex]\frac{1}{5}[/tex]

To simplify further;

Converting mixed fractions to improper fractions,

we get,

2 x 11/5

= 22/5

= 4.4

Therefore, 2 x 2[tex]\frac{1}{5}[/tex] = 4.4.

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what’d the inequality of x > 23

Answers

The graph of the given inequality of x > 23 is attached.

What is an Inequality?

The relationship between two expressions or values that are not equal to each other is called inequality.

A number line can be used to represent numbers placed on regular intervals. A number line can be used to represent an inequality.

Given that the inequality of x > 23

We are asked to plot the given inequality on a number line.

x > 23

The above inequality says that, the value of x is equal to or greater than 23.

Hence, the graph of the given inequality is attached.

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a continuous random variable x has the probability density function of the following form (3.1) fx(x)

Answers

The probability of the continuous random variable X taking on a value greater than one is e⁻¹, which is approximately 0.368.

In probability theory, random variables are used to represent uncertain events. A continuous random variable is a variable that can take any value within a given range of values. The probability density function (PDF) of a continuous random variable is a function that describes the likelihood of the variable taking on a certain value. In this question, we are given the PDF of a continuous random variable and asked to find the probability of the variable taking on a value greater than one.

The given PDF is

=> f(x) = e⁻ˣ, 0 < x < ∞.

To find P{X > 1}, we need to integrate the PDF from 1 to infinity.

P{X > 1} = ∫(1 to ∞) e⁻ˣ dx

Using integration by parts, we get:

P{X > 1} = [-e⁻ˣ](1 to ∞)

= lim t → ∞ [-e⁻ˣ + e⁻¹)]

= e⁻¹

In conclusion, the probability density function of a continuous random variable is used to describe the likelihood of the variable taking on a certain value. In this question, we used the PDF to find the probability of the continuous random variable taking on a value greater than one. By integrating the PDF, we obtained the probability to be e⁻¹, which is approximately 0.368.

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Complete Question:

A continuous random variable X has a probability density function f ( x ) = e⁻ˣ , 0 < x < ∞ . Then P{X > 1} is

for the following system of liner equation: x plus 2 y plus z equals negative 2 3 x plus 3 y minus 2 z equals 2 2 x plus y plus z equals 0 complete the row-echelon form matrix derived from the augmented matrix at the end of the gaussian elimination method. (if it is not a whole number, write the fraction form. for example, if the answer is 0.5, write 1/2) 1 2 1 -2 0 1 5/3 -8/3 0 0 1 -1

Answers

The following system of liner equation when converted into equivalent matrix gives us x =2, y = 3, z = -2.

Given that the augmented matrix is [AB] = [tex]\left[\begin{array}{cccc}1&2&2&4\\0&1&-3&9\\0&0&1&-2\end{array}\right][/tex]

Since p(A) = p(AB) = 3 = n = The number of variables

The system has unique solution

x + 2y + 2z = 4

y - 3z = 9

z = -2

y = 9 + 3z = 9 + 3(-2) = 3

x = 4-2y -2z

= 4 -2(3) -2(-2)

= 4 - 6 + 4

= 2

Therefore, the solution is x =2, y = 3, z = -2.

The abecedarian idea is to add multiples of one equation to the others in order to exclude a variable and to continue this process until only one variable is left. Once this final variable is determined, its value is substituted back into the other equations in order to estimate the remaining unknowns. This system, characterized by step ‐ by ‐ step elimination of the variables, is called Gaussian elimination.

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Complete question;

The augmented matrix of a system of equations has been transformed to an equivalent matrix in​ row-echelon form. Using​ x, y, and z as​ variables, write the system of equations corresponding to the following matrix. If the system is​ consistent, solve it.

left bracket Start 3 By 3 Matrix 1st Row 1st Column 1 2nd Column 2 3rd Column 2 2nd Row 1st Column 0 2nd Column 1 3rd Column negative 3 3rd Row 1st Column 0 2nd Column 0 3rd Column 1 EndMatrix Start 3 By 1 Table 1st Row 1st Column 4 2nd Row 1st Column 9 3rd Row 1st Column negative 2 EndTable right bracket

Find the component form and magnitude of the vector v with the given initial and terminal points. Then find a unit vector in the direction of v.
Initial point:
(1, 6, 0)
Terminal point:
(4, 1, 6)

Answers

The component form of the vector is <3, -5, 6>, the magnitude of the vector is √70, then the unit vector is <0.386, -0.643, 0.643>.

The initial and terminal points to find the component form of the vector, calculated its magnitude, and then divided the component form by the magnitude to find a unit vector in the direction of v.

To find the component form of the vector, you can subtract the coordinates of the initial point from the coordinates of the terminal point. In this case, we have:

v = (4, 1, 6) - (1, 6, 0)

v = (3, -5, 6)

So the component form of the vector is v = <3, -5, 6>.

To find the magnitude of the vector, we can use the formula:

|v| = √(3² + (-5)² + 6²)

|v| = √70

Therefore, the magnitude of the vector is √70.

Finally, to find a unit vector in the direction of v, we can divide the component form of v by its magnitude:

u = v/|v|

u = <3/√70, -5/√70, 6/√70>

So the unit vector in the direction of v is u = <0.386, -0.643, 0.643>.

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A Cepheid variable star is a star whose brightness alternately increases and decreases. Suppose that Cephei Joe is a star for which the interval between times of maximum brightness is 4.4 days. Its average brightness is 4.2 and the brightness changes by +/-0.45. Using this data, we can construct a mathematical model for the brightness of Cephei Joe at time t , where t is measured in days: B(t)=4.2 +0.45sin(2pit/4.4)
(a) Find the rate of change of the brightness after t days.
(b) Find the rate of increase after one day.

Answers

(a) The rate of change of the brightness after t days is dB/dt = (2π/4.4) * 0.45 * cos(2πt/4.4).

(b) The rate of increase after one day is  0.22 radians/day.

For the given case the equation for the brightness of cepheid joe is  B(t)=4.2 +0.45sin(2pit/4.4). This equation tells us that the brightness of the star is determined by the sine of the time multiplied by a constant. Since the sine of a number is always changing, the brightness of the star is always changing too.

Therefore, the rate of change of the brightness is given by the derivative of the equation, which is   2π/4.4)*0.45*cos(2πt/4.4), when t is  1 day, we can plug this value into the equation to get the rate of increase after one day, which is dB/dt = (2π/4.4) * 0.45 * cos(2π/4.4) = 0.22 radians/day.

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The distance d an object falls after t seconds is given by d = 16t² (ignoring air resistance). To find
the height of an object launched upward from ground level at a rate of 32 feet per second, use
the expression 32t - 16t^2, where t is the time in seconds. Factor the expression.

Answers

The object will hit the ground in 2 seconds.

What is an expression?

Expression in maths is defined as the collection of numbers variables and functions by using signs like addition, subtraction, multiplication, and division.

The distance d an object falls after t seconds is given by d = 16t²

To detemine the height of an object launched upward from ground level at a rate of 32 feet per second, use the expression 32t - 16t^2, where t is the time in seconds.

Therefore, put h = 0 in the equation;

0 = 32t - 16t²

16t² = 32t

16t = 32

t = 2

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_______ the term applies to an ordered set of observations from smallest to largest. the cumulative relative frequency is the sum of the relative frequencies for all values that are less than or equal to the given value

Answers

Ascending order is a term that applies to an ordered set of observations from smallest to largest.

This means that the values are arranged in order of increasing magnitude, starting from the lowest value. The cumulative relative frequency is the sum of the relative frequencies for all values that are less than or equal to the given value. This is calculated by adding the relative frequencies of each value from the lowest value up to the given value, and then dividing the sum by the total number of observations. This helps us to determine the percentage of observations that lie below or equal to the given value. For example, given a set of five values, the cumulative relative frequency of the third value would be calculated by adding the relative frequencies of the first two values and then dividing by 5.

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Market Foods sells 24 cans of soda for $6.79, a 128-ounce bottle of detergent for $2.89, a 13.8-ounce can of peanuts for $2.59, and a cooked 1.75-pound chicken half for $2.65​

Answers

According to the information, the unit price of the products is: $0.28 for each can of soft drink, $0.022 for each ounce of detergent, $0.18 for each ounce of peanuts, $0.0033 for each gram of cooked chicken.

How to calculate the unit price of products?

To calculate the unit price of the products we must perform the following procedure:

We must divide the value of each product into the amount of product as shown below:

$6.79 / 24 cans = $0.022$2.89 / 128oz = $0.022$2.59 / 13.8oz = $0.18$2.65 / 793.7g (1.75 lbs) = $0.0033

Accordingly, the unit price of these products is the result of these divisions.

Note: This question is incomplete. Here is the complete information:

What is the unit price of the products?

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Find an autonomous differential equation with all of the following properties:
equilibrium solutions at y=0 and y=5,
y′>0 for 0 y′<0 for −[infinity] dydt=

Answers

dydt = k(y-5)(y-0) where k is a positive constant. This equation has equilibrium solutions of y=0 and y=5, and y' is positive for 0<y<5 and negative for y<0 or y>5.

We can solve this problem by rearranging the equation to separate the y terms from the y' terms. We can do this by factoring the y terms on the left side, and then writing the equation as y' = k(y-5)(y-0). This equation has an equilibrium solution at y=0 and y=5, and the sign of y' depends on the sign of k. Since k is a positive constant, y' is positive when 0<y<5, and y' is negative when y<0 or y>5.  Thus, the equation dydt = k(y-5)(y-0) meets all of the given criteria. Therefore, dydt = k(y-5)(y-0) where k is a positive constant. This equation has equilibrium solutions of y=0 and y=5, and y' is positive for 0<y<5 and negative for y<0 or y>5.

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14. Which One Doesn't Belong? Circle the
system of equations that does not belong
with the other two. Explain your reasoning.
y=x+6
y = -x + 2
3x + y = -1
y = 4x + 6
y=-4x-3
y + 4x = -5

Answers

The system of equation that does not belong to the other two is the third system of equations; y = -4·x - 3, y + 4·x = -5, This is so because, the third system has no solutions.

What are linear system of equations?

A linear system of equations consists of two or more linear equations that consists of common variables.

The possible equations are;

y = x + 6, y = -x + 2

3·x + y = -1, y = 4·x + 6

y = -4·x - 3, y + 4·x = 5

Evaluation of the system of equations, we get;

First system of equations;

y = x + 6, y = -x + 2

x + 6 = -x + 2

x + x = 2 - 6 = -4

2·x = -4

x = -4/2 = -2

x = -2

y = x + 6

y = -2 + 6 = 4

y = 4

The solution is; x = -2, y = 4

Second system of equation;

3·x + y = -1, y = 4·x + 6

3·x + 4·x + 6 = -1

7·x + 6 = -1

7·x  = -1 - 6 = -7

x = -7/7 = -1

x = -1

y = 4·x + 6

y = 4 × (-1) + 6 = 2

y = 2

The solution to the second system of equation is; x = -1, y = 2

Third system of equation;

y = -4·x - 3, y + 4·x = 5

y + 4·x = 5

-4·x - 3 + 4·x = 5

-4·x + 4·x - 3 = 5

0 - 3 = 5

-3 = 5

The third system of equation has no solution

The system of equations that does not belong with the other two is the third system of equation; y = -4·x - 3, y + 4·x = 5, that has no solution.

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Find the perimeter and the
area of this triangle
18.5cm
8.5cm
4cm

Answers

Answer:

Perimeter: 31 cm

Step-by-step explanation:

18.5 + 8.5 + 4 = 31 cm.

Can you send a picture of the math problem?

Jim has a triangular shelf system that attaches to his showerhead. The total height of the system is 18 inches, and there are three parallel shelves as shown above. What is the maximum height, in inches, of a shampoo bottle that can stand upright on the middle shelf?

Answers

To determine the maximum height of a shampoo bottle that can stand upright on the middle shelf, we need to consider the height of the shelf above and below it.

Since there are three shelves, the middle shelf is located at the height of 9 inches (half of the total height).

To find the maximum height of a shampoo bottle that can stand upright on the middle shelf, we need to subtract the height of the middle shelf from the total height of the system, and then divide the result by two, since there are two spaces above and below the middle shelf.

Therefore, the maximum height of a shampoo bottle that can stand upright on the middle shelf is: (18 - 9) / 2 = 4.5 inches

So, the maximum height of a shampoo bottle that can stand upright on the middle shelf is 4.5 inches.

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: A tank is is half full of oil that has a density of 900 kg/m3. Find the work w required to pump the oil out of the spout. (Use 9.8 m/s2 for g. Assume r = 15 m and h = 5 m.) W = h A tank is full of water. Find the work required to pump the water out of the spout. (Use 9.8 m/s2 for g. Use 1000 kg/m3 as the density of water. Assume r = 3 m and h = 1 m.) 3.11.107 X h A tank is full of water. Find the work W required to pump the water out of the spout. (Use 9.8 m/s2 for g. Use 1000 kg/m3 as the weight density of water. Assume that a = 4 m, b = 4 m, c = 9 m, and d = 4 m.) W = 96000 kb

Answers

The work required to pump water out of the spout is calculated by multiplying the density of water (1000 kg/m3) by the height of the tank (h) and the area of the spout (a x b x c x d). The acceleration due to gravity (g) is 9.8 m/s2.

1. Calculate the volume of the tank:

V = a x b x c x d = 4 x 4 x 9 x 4 = 576 m3

2. Calculate the mass of the water in the tank:

m = V x density = 576 x 1000 = 576000 kg

3. Calculate the height of the tank:

h = m / density = 576000 / 1000 = 576 m

4. Calculate the work required to pump the water out of the spout:

W = m x g x h = 576000 x 9.8 x 576 = 3.11.107 x 576 = 1.79.107 J

The work required to pump water out of a spout can be calculated by multiplying the density of water (1000 kg/m3) by the height of the tank (h) and the area of the spout (a x b x c x d). The acceleration due to gravity (g) is 9.8 m/s2.To calculate the work, first we need to find the volume of the tank (V) by multiplying the length (a), width (b), height (c), and depth (d). Then we can calculate the mass (m) by multiplying the volume with the density of water. We can then calculate the height of the tank (h) by dividing the mass with the density. Finally, we can calculate the work required (W) by multiplying the mass, acceleration due to gravity, and the height of the tank.

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1. Jonathan's family had a pizza party with their neighbors, and they ordered 7 pizzas.
Everyone ate 1 1/4 pepperoni pizza, 2 3/4 sausage pizza, and 3/4 of the cheese pizza. How
much pizza was leftover after the party?

Answers

Answer: 2.25 slices which is 9/4 slices i think im right

Step-by-step explanation:

add 1 1/4+2 3/4+3/4 which makes 4.75 slices or 19/4 slices do 7-4.75=2.25/9/4 slices

-x + 3y <= 3

-2x + y >= -2

solve please and then graph

Answers

The graph of the system of inequalities is in the image at the end.

How to solve and graph the system?

Here we have a system of inequalities, first we want to solve them:

-x + 3y ≤ 3

-2x + y ≥ -2

Isolating y in both of these we will get:

y  ≥ -2 + 2x

y ≤ (3 + x)/3

So we just needto graph the two lines, on the first one we will shade the region above the line and on the second one we will shade the region below the line.

The graph of the system is on the image below.

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Grade level and gender Describing the sampling distribution of ħi - Pz PROBLEM: In a very large high school, the junior class has 800 students, 54% of whom are female. The senior class has 700 students, 49% of whom are female. The student council selects a random sample of 40 juniors and a separate random sample of 35 seniors. Let P, - ., be the difference in the sample proportions of females. (a) What is the shape of the sampling distribution of p,, - P..? Why? (b) Find the mean of the sampling distribution. (c) Calculate and interpret the standard deviation of the sampling distribution.

Answers

The size of sample are both large enough 40 and 35. The mean and standard deviation of given data is 0.05 and 0.105 respectively.

The shape of the sampling distribution of [tex]\hat{p}_j - \hat{p}_s[/tex]is approximately normal, according to the Central Limit Theorem. This is because the sample sizes are both large enough (40 and 35, respectively) and the population proportions are unknown but assumed to be independent.

The mean of the sampling distribution is the difference in the population proportions of females, which is 0.54 - 0.49 = 0.05.

The standard deviation of the sampling distribution can be calculated as:

[tex]$\sqrt{\frac{\hat{p}_j(1 - \hat{p}_j)}{n_j} + \frac{\hat{p}_s(1 - \hat{p}_s)}{n_s}}$[/tex]

where [tex]\hat{p}_j = 0.54$, $n_j = 40$, $\hat{p}_s = 0.49$, and $n_s = 35$.[/tex]Plugging in these values, we get:

[tex]$\sqrt{\frac{0.54(1 - 0.54)}{40} + \frac{0.49(1 - 0.49)}{35}} \approx 0.105$[/tex]

Interpretation: The standard deviation of the sampling distribution tells us how much we can expect the sample proportion difference to vary across different random samples. In this case, we can expect the difference between the sample proportions of females in the junior and senior classes to vary by about 0.105 on average across different samples.

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Prove the second part of Theorem 6: Let w be any solution of Ax = b, and define vh = w - p. Show that vh is a solution of Ax = 0. This shows that every solution of Ax = b has the form w = p + vh with p a particular solution of Ax = b and vh a solution of Ax = 0.

Answers

The second part of Theorem 6 states that if w is any solution of the linear system Ax=b, and p is a particular solution of Ax=b, then the difference vector v=h−p is a solution of the homogeneous system Ax=0.

We will now prove this statement.

Since p is a particular solution of Ax=b, we have A*p = b. Then we can write w = p + v, where v = w - p.

To show that v is a solution of Ax=0, we need to show that Av=0.

We have:

Av = A(w-p) = Aw - Ap

Since Aw = b (by the assumption that w is a solution of Ax=b) and Ap = b (by the assumption that p is a particular solution of Ax=b), we can simplify this to:

A*v = b - b = 0

Thus, v is a solution of Ax=0, as required.

Therefore, every solution of Ax=b has the form w=p+v, where p is a particular solution of Ax=b and v is a solution of Ax=0.

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Solve the system of equations using subtraction. 3x−2y =−1
3x+ y =14 QUICK PLEASEE

Answers

The required values are,

x = 3

y = 5.

Linear Equation in two variables:

An equation is said to be linear equation in two variables if it is written in the form of ax + by + c=0, where a, b & c are real numbers and the coefficients of x and y, i.e a and b respectively, are not equal to zero

Now in the given question,

we have two equations,

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

3x + y = 14                                 .......(2)

subtract (2) from (1), we get

-3y = -15

divide both sides by -3, we get

y = 5

now put this value of y in (2),

3x + 5 = 14

subtarct both sides by 5, we get

3x = 9

divide both sides by 3, we get

x = 3

Hence, the required values are,

x = 3

y = 5

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If Fn denotes the nth Fibonacci number, describe the quotients and remainders in the Euclidean Algorithm for gcd(Fn+1, Fn).

Answers

The remainder when Fn+1 is divided by Fn is Fn-1, and the remainder when Fn is divided by Fn-1 is Fn-2.

Let's denote the greatest common divisor of Fn+1 and Fn as d. We can use the Euclidean Algorithm to find d by repeatedly taking remainders.

First, we have:

Fn+1 = 1*Fn + Fn-1

So, the remainder when Fn+1 is divided by Fn is Fn-1.

Next, we have:

Fn = 1*Fn-1 + Fn-2

So, the remainder when Fn is divided by Fn-1 is Fn-2.

We can continue this process by repeatedly dividing the larger number by the smaller number and taking remainders until we reach a remainder of 0. The last nonzero remainder we obtain is the greatest common divisor of Fn+1 and Fn.

For example, to find the greatest common divisor of F6 = 8 and F7 = 13, we have:

F7 = 1F6 + F5, so the remainder is F5 = 5

F6 = 1F5 + F4, so the remainder is F4 = 3

F5 = 1F4 + F3, so the remainder is F3 = 2

F4 = 1F3 + F2, so the remainder is F2 = 1

F3 = 2*F2 + 0, so we stop here

Therefore, the greatest common divisor of F7 and F6 is d = 1, and the remainders in the Euclidean Algorithm are 5, 3, 2, and 1.

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At a small part consisting of 10 men and 12 women, 2 door prizes were awarded. find the probability that both prizes were won by two people of the same sex. assume that the ticket is not replaced after the first draw.

Answers

The probability that both prizes were won by two people of the same sex is 0.48

Let's call the number of men in the small party "m" and the number of women in the small party "w". The total number of people in the party is "m + w = 10 + 12 = 22".

The number of ways to choose two people of the same sex can be calculated as follows:

The number of ways to choose two men is "C(m,2) = C(10,2) = 45".

The number of ways to choose two women is "C(w,2) = C(12,2) = 66".

The total number of ways to choose two people without replacement is "C(22,2) = 231".

The probability that both prizes were won by two people of the same sex is then given by the sum of the probabilities for two men or two women:

P(same sex) = (C(10,2) / C(22,2)) + (C(12,2) / C(22,2)) = (45/231) + (66/231) = 111/231 = approx. 0.48

So, the probability that both prizes were won by two people of the same sex is approximately 0.48

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in exercises 23 and 24, choose and such that the system has (a) no solution, (b) a unique solution, and (c) many solutions. give separate answers for each part.

Answers

(a) For no solution, we need the two equations to be inconsistent, which means that they cannot be satisfied simultaneously. We can achieve this by making the first equation a multiple of the second equation:

4(x1 + hx2) = 8

4x1 + 4hx2 = 8

4x1 + 8x2 = k

Now, we can see that the second equation is not compatible with the first equation since they imply contradictory statements:

4x1 + 8x2 = k and 4x1 + 4hx2 = 8

(b) For a unique solution, we need the two equations to be independent, which means that they are not multiples of each other. We can achieve this by choosing different coefficients for x1 and x2 in the two equations.

x1 + hx2 = 2 and 4x1 + 8x2 = k

To find the values of h and k that give a unique solution, we can solve the system by elimination or substitution. For example, we can multiply the first equation by 4 and subtract it from the second equation:

4x1 + 8x2 = k

-4x1 - 4hx2 = -8

Simplifying and dividing by -4, we get:

x2 = (2 + h)/2

x1 = (k - 4x2)/4

Since x1 and x2 are expressed in terms of h and k, we can choose any values of h and k that satisfy these equations, and the system will have a unique solution.

(c) For many solutions, we need the two equations to be dependent, which means that they are multiples of each other or one is a linear combination of the other. We can achieve this by making the second equation a multiple of the first equation:

x1 + hx2 = 2

4(x1 + hx2) = 8 + 4hkx2

4x1 + (4h - k)x2 = 8

Now, we can see that the second equation is a linear combination of the first equation, so the system has infinitely many solutions. To find the solutions, we can choose any value of x2 and solve for x1 in terms of x2:

x1 = (8 - (4h - k)x2)/4

Since x1 and x2 are expressed in terms of h and k, we can choose any values of h and k that satisfy the equation 4h - k = 0, and the system will have many solutions.

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given a matrix of non-negative reals, show it is a non-negative linearr combination of permutation matrices

Answers

Q is a non-negative linear combination of permutation matrices.

A non-negative linear combination of permutation matrices is a matrix P that can be expressed as a linear combination of permutation matrices P1, P2, ..., Pn such that each coefficient in the linear combination is non-negative. This can be expressed as:

[tex]P = c1P1 + c2P2 + ... + cnPn[/tex]

where c1, c2, ..., cn are all non-negative real numbers. For example, consider the following matrix Q:

[tex]Q = \begin{bmatrix} 1 & 0 & 0 \\ 0 & 0 & 1 \\ 0 & 1 & 0 \end{bmatrix}[/tex]

We can express Q as a non-negative linear combination of permutation matrices P1, P2, P3 as follows:

[tex]Q = \frac{1}{3}\begin{bmatrix} 0 & 1 & 0 \\ 0 & 0 & 1 \\ 1 & 0 & 0 \end{bmatrix} + \frac{1}{3}\begin{bmatrix} 0 & 0 & 1 \\ 1 & 0 & 0 \\ 0 & 1 & 0 \end{bmatrix} + \frac{1}{3}\begin{bmatrix} 1 & 0 & 0 \\ 0 & 1 & 0 \\ 0 & 0 & 1 \end{bmatrix}[/tex]

Therefore, Q is a non-negative linear combination of permutation matrices.

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What is 4/16 in simplest form

Answers

4/16 in lowest terms is 1/4 because 4 is 25 percent of 16

Answer:

[tex]\frac{1}{4}[/tex].

Step-by-step explanation:

[tex]\frac{4}{16}[/tex] is not in simplest form, so that will be our first step.

[tex]4[/tex] and [tex]16[/tex] are both have factors/are divisible by [tex]2[/tex] and [tex]4[/tex].

In order to get the fraction in simplest form fastest, divide by the GCF. (Greatest Common Factor)

Therefore, divide the Numerator, (top number) and Denominator, (bottom number) by [tex]4[/tex].

[tex]4[/tex] ÷ [tex]4[/tex] [tex]= 1[/tex].

[tex]16[/tex] ÷ [tex]4[/tex] [tex]= 4[/tex].

Therefore, the answer is [tex]\frac{1}{4}[/tex].

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Which statement is missing from step 4 above? Part a

part b which of the following reasons complete step 4?

Answers

The missing statement from step 4 is that the angles OAKRV, OASVT, OARQP, and OAPQR are congruent.

What is congruent?

Congruent is a term used in mathematics to describe two figures or objects that have the same shape and size. This means that the two objects have identical angles and sides, so they can be perfectly superimposed on each other.

This can be concluded using the Angle-Angle-Side (AAS) Theorem, which states that if two triangles have two angles and a side in common, the triangles are similar. Since the angles OAKRV, OASVT, OARQP, and OAPQR are the corresponding angles of the similar triangles AVKR and APQR, the reason that completes step 4 is the converse of the Isosceles Triangle Theorem, which states if two sides of a triangle are congruent, then the angles opposite those sides are congruent.

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Please help me answer this question ASAP!!

Answers

Answer:

let the Becky's age be x

21=3x

x = 7

Answer:

a = 21 / 3

Step-by-step explanation:

If he's 3 times older than her, then you divide by 3.

43⁰ 1200 m 53⁰ H 1500 m 30 m 40 m 8. At a ski resort, the highest ski run, Hattie's Haven, can only be accessed by taking two lifts. The first lift leaves the lodge area and travels 1200 m at an inclination of 43° to a transfer point. From the transfer point, the new lift travels 1500 m at an inclination of 53° to the top of Hattie's Haven ski run. The resort is undergoing renovations and is planning on creating a new ski run called Giffin's Gallop. This run would be 30 m to the right of the top of Hattie's Haven and 40 m higher. A new lift must be installed that goes directly from the lodge area to the top of Giffin's Gallop. Determine the angle of elevation of the lift from the lodge area to the top of Giffin's Gallop. (Thinking and Inquiry)​

Answers

Answer: We can use trigonometry to solve this problem. Let's call the angle of elevation of the lift from the lodge area to the top of Giffin's Gallop "θ". Then we can break down the lift into two parts: the horizontal distance from the lodge area to the top of Giffin's Gallop, and the vertical distance from the lodge area to the top of Giffin's Gallop.

Horizontal distance:

The horizontal distance from the lodge area to the top of Giffin's Haven is 1200 m * cos(43°) + 1500 m * cos(53°) + 30 m = 1759.29 m

The horizontal distance from the top of Giffin's Haven to the top of Giffin's Gallop is 30 m.

So, the total horizontal distance from the lodge area to the top of Giffin's Gallop is 1759.29 m + 30 m = 1789.29 m

Vertical distance:

The vertical distance from the lodge area to the top of Giffin's Haven is 1200 m * sin(43°) + 1500 m * sin(53°) + 40 m = 1174.70 m

The vertical distance from the top of Giffin's Haven to the top of Giffin's Gallop is 40 m.

So, the total vertical distance from the lodge area to the top of Giffin's Gallop is 1174.70 m + 40 m = 1214.70 m

Finally, using the tangent function, we can find the angle of elevation of the lift from the lodge area to the top of Giffin's Gallop:

θ = tan^-1(vertical distance / horizontal distance) = tan^-1(1214.70 m / 1789.29 m) = tan^-1(0.67967)

θ = 37.90° (approximately)

So, the angle of elevation of the lift from the lodge area to the top of Giffin's Gallop is approximately 37.90°.

Step-by-step explanation:

Find an equation for the tangent to the curve at the given point. Then sketch the curve and the tangent together. y = 8 , (4,16) y = Choose the correct graph of the curve and the tangent below.

Answers

The equation of tangent to the curve y = 8√x  at the point (4,16) is  y = 2x + 8 .

We have to find equation of tangent line to the curve y = 8√x at the point (4, 16), we first find the slope ;

So , slope of the tangent line is  derivative of function y = 8√x at point (4, 16).

which means :  y' = 4[tex]x^{-\frac{1}{2} }[/tex]  ;

At the point (4, 16), the value of x is 4.

So , y' = 4 × [tex]4^{-\frac{1}{2} }[/tex] = 2 .

By Using the point slope form, the equation of the tangent line is ;

⇒ y - 16 = (2)(x - 4)  ;

Simplifying this equation, we get:

⇒ y - 16 = 2x - 8

⇒ y = 2x + (16 - 8)

⇒ y = 2x + 8 .

Therefore, the equation of the tangent line to the curve is y = 2x + 8 .

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The given question is incomplete , the complete question is

Find an equation for the tangent to the curve y = 8√x  at the point (4,16) .

For each value of w, determine whether it is a solution to 2w-1 < -13. pls answer fast

A. -9 B. -6 C. 6 D. 9

Answers

The required inequality of the solutions of the given equation is (-∞, -6).

What is inequality?

The idea of inequality, which is the state of not being equal, especially in terms of status, rights, and opportunities, is at the core of social justice theories. However, because it frequently has diverse meanings to different people, it is prone to misunderstanding in public discourse.

According to question:

We have;

2w-1 < -13

2w < -13 + 1

2w < - 12

w < -6

Thus, required inequality of the solutions of the given equation is (-∞, -6)

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