suppose dispatcher a takes a random sample of 9 response times from the log books in march. dispatcher a calculates x-

Answer:

[tex]y=x[/tex]

Step-by-step explanation:

[tex]2(-y+x)=0\\\\-y+x=0\\\\-y=-x\\\\y=x[/tex]

What is a equation in math?

Image result for What is equation?

In its simplest form in algebra, the definition of an equation is a mathematical statement that shows that two mathematical expressions are equal. For instance, 3x + 5 = 14 is an equation, in which 3x + 5 and 14 are two expressions separated by an 'equal' sign.

What is a equation in math?

An equation is a mathematical expression that contains an equals symbol. Equations often contain algebra.

given:

y=7x-2

first, (3, 15)

15 = 7*3-2 = 21-2 = 19

So, (3, 15) is not the solution.

Second, (-1,-10)

-10 = 7* (-1) -2

-10 = -9

Also, (-1,-10) is not the solution.

Hence, there is no solution for y=7x-2

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a Markov chain is the probability defined by the below transition matrix. [ 1/3 2/3 1/5 4/5] has the steady state C. (10/13 3/13]

The steady state of a Markov chain is the probability distribution of possible states of the system. In this case, the steady state from the transition matrix ( Matrix can also be used to represent relationships between different variables.It is commonly used in mathematics, science and engineering to represent a variety of data. ) can be found by solving the system of equations:

P(X0) = P(X0) * 1/3 + P(X1) * 2/3

P(X1) = P(X0) * 1/5 + P(X1) * 4/5

Solving this system of equations yields the steady state of (10/13, 3/13).

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The ordered pair that lie on the graph as per the equation will be equal to (-2, -4). Hence, option B is correct.

In math, graph science is the theory of geometric structures called graphs that are used to represent pairwise different objects. Vertices—also known as nodes or points—that are joined by edges make form a network in this sense.

Undirected graphs, where edges connect two vertices equally, and focused therapy, where edges connect two vertices unevenly, are distinguished.

As per the given information in the question,

The given equation is,

f(x) = 2(x + 4) - 8

Let's check as per the points given in the question,

A. (24, 1)

f(x) = 2(24 + 4) - 8

f(x) = 48

So, the supplied exponential function's graph does not contain the point (24, 1) mentioned.

B. (-2, -4)

f(x) = 2(-2 + 4) - 8

f(x) = 4 - 8

f(x) = -4

As a result, the points (-2, -4) are located on the graph of the supplied exponential function.

C. (2, 256)

f(x) = 2(2 + 4) - 8

f(x) = 4

So, the supplied exponential function's graph does not contain the point (2, 56) mentioned.

D. (8, 0)

f(x) = 2(8 + 4) - 8

f(x) = 16

So, the supplied exponential function's graph does not contain the point (8, 0) mentioned.

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Answer:

length = 43 ft ; width = 19 ft

Step-by-step explanation:

perimeter/2 = 124/2 = 62 ft

l = 2w + 5

l + w = 62

2w+5 + w = 62

3w = 62 - 5

3w = 57

w = 57/3

w = 19 ft

l = 2 · 19 + 5

l = 38 + 5

l = 43 ft

The conclusion hypothesis is to reject the null hypothesis and accept the alternative hypothesis. The z score of 0.14 is in the rejection area

What is hypothesis?

In statistics, hypothesis refers a testable statement about the relationship between two or more variables or a proposed variable.

Here we have given that two machines fill 32-oz cartons with cereal. the quality control manager believes the two machines are not filling the cartons with the same amount of cereal. samples from each line were taken and the following results were obtained. assume that the assumptions and conditions for inference with a two- sample t-test are met. at the 0.01 level of significance, test the claim that the population mean for machine 1 is different from the population mean for machine 2.

And we need to find the conclusion hypothesis.

While we looking into the given question, we have identified the following values,

Sample mean: Machine 1 25 31.8 oz 2.2 oz

Sample SD: Machine 2 36 30.9 OZ 1.98 oz

So, the hypothesis is calculated as, the claim is the population mean of cereal cartons from machine 1 is larger than that from the machine 2

Null hypothesis: H0 : The population mean of cereal cartons for machine 1 and machine 2 is same

Alternative hypothesis H1: The population defines the statistical inference experiment.

So, the conclusion of hypothesis is, the critical value (cutoff point) is 2.353. In left-tail hypothesis testing, any z score less than the critical value will be rejected. Since 0.14 is less than 2.353, we reject the null hypothesis. We accept the alternative hypothesis.

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Answer:

15

Step-by-step explanation:

If f(x) = -3x + 4, then plugging in -5 for x gives f(-5) = -3(-5) + 4 = 15. Therefore, the correct answer is 15.

One glass of milk and one snacks bar have a total of 23 carbs.

Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.

Given that;

Two glass of milk and Three snacks bar have a total of 56 carbs.

And, Four glass of milk and two snacks bar have a total of 72 carbs.

Now,

Let the amount of milk = x

And, The amount of snacks bar = y

So, We can formulate;

Two glass of milk and Three snacks bar have a total of 56 carbs.

⇒ 2x + 3y = 56 ..(i)

And, Four glass of milk and two snacks bar have a total of 72 carbs.

⇒ 4x + 2y = 72

⇒ 2x + y = 36

⇒ y = 36 - 2x   ..(ii)

Substitute above value in equation (i),

⇒ 2x + 3y = 56

⇒ 2x + 3 (36 - 2x) = 56

⇒ 2x + 108 - 6x = 56

⇒ 108 - 56 = 4x

⇒ 4x = 52

⇒  x = 13

And, from (ii);

⇒ y = 36 - 2x  

⇒ y = 36 - 2 × 13

⇒ y = 36 - 26

⇒ y = 10

Thus, One glass of milk and one snacks bar have a total of carbs

= 13 + 10

= 23

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If a person is a professional athlete, then the person is a professional hockey player.

Given :

( a ) Give the contrapositive of the statement.

If not  the person is a professional hockey player .

then not a person is a professional athlete .

( b ) Give the converse of the statement.

If the person is a professional hockey player .

then a person is a professional athlete .

( c ) Give the inverse of the statement .

If not the person is a professional hockey player.

then not a person is a professional athlete .

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Therefore solution to this problem is  the given  statement is true .

The generalization of ordinary least squares and linear regression known as weighted least squares (WLS), sometimes known as weighted linear regression, incorporates knowledge of the variance of the observations into the regression. Generalized least squares is also a specialization of WLS.

Here,

the generalized least squares estimators for correcting heteroskedasticity are also called weighed least squares estimators.

Since they are also known as weighed least squares estimators, extended least squares estimators for correcting heteroskedasticity use least squares estimation.

Therefore , the above statement is true .

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The Sample standard deviation would be 3.56 and the confidence interval is between72.74 to 78.60.

What is a confidence interval?

A confidence interval is a range of values that is estimated to contain the true value of a population parameter with a certain level of confidence. It is a measure of the uncertainty associated with an estimate of a population parameter, such as the mean, the proportion, or the variance.

a)

sample mean = 75.67

sample std. dev. = 3.56

b)

Given CI level is 90%, hence α = 1 - 0.9 = 0.1

α/2 = 0.1/2 = 0.05, tc = t(α/2, df) = 2.015

[tex]CI = (xbar - tc * s/\sqrt{n} , xbar + tc * s/\sqrt{n})\\\\CI = (75.67 - 2.015 * 3.56/\sqrt{6} , 75.67 + 2.015 * 3.56/\sqrt{6})\\\\\CI = (72.74 , 78.60)[/tex]

Hence the Sample standard deviation would be 3.56 and the confidence interval is between72.74 to 78.60.

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Answer:

Step-by-step explanation:

 7 49999977/50000000 is gallons to pints. multiply that number by 6, which is 47 24999931/25000000.

From the given i) and v) are discrete metric and ii), iii), iv) and vi) are continuous metric.

What distinguishes discrete from continuous data?

i)  'X' :  is discrete   because Number of automobile accidents per year is countable  (45, 78, 90) and cannot be fraction (4.5)

ii) 'Y'   : is continuous   because it could take any time to play 18 holes of golf.  (15.10 min)

iii) 'M'  :   is continuous because volume measured can be in fraction. Like 15.6 liters of milk produced by a cow

iv) 'N'  :  is  discrete  because eggs are countable . no half eggs or broken eggs are counted.  example: 30 eggs per month by a hen.

v) 'P'   : is discrete because permits issued are in countable amount and cannot go beyond or like half permit.

vi) 'Q':    is continuous because weight can be less or more and can be in fraction. 20 AND HALF OR 56,6 Kg.

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Answer:  we first need to apply the transformation to the x- and y-coordinates of the point individually

Step-by-step explanation:

To transform the coordinates of a point (x, y) using the transformation (x, y) ⟶ (–y, x), we first need to apply the transformation to the x- and y-coordinates of the point individually. This means that the x-coordinate becomes –y and the y-coordinate becomes x.

In the case of point B, the original coordinates are (2, 5), so the transformed coordinates are (–5, 2). This means that the x-coordinate becomes –5 and the y-coordinate becomes 2.

Next, we need to apply the translation that moves the point 1 unit right and 4 units up. To do this, we simply add 1 to the x-coordinate and add 4 to the y-coordinate. After this translation, the coordinates of B′ become (–4, 6). Therefore, the final coordinates of B′ are (–4, 6).

Answer:

75.4cm³

Step-by-step explanation:

height(h) = 8

2radius(diameter) = 6

radius = 6/2 = 3

volume of a cone = ⅓ πr²h

= ⅓ × 3.142 × 3² × 8

= ⅓ × 3.142 × 9 × 8

= 226.224/3

= 75.408

= 75.4cm³

pls rate as brainliest i need to move to the next rank

Answer: around 75.4

Step-by-step explanation:

Cone volume formula

V=[tex]\pi r^{2}[/tex][tex]\frac{h}{3}[/tex]

v= volume, r = radius, h=Height

find the radius of the base

r=6/2

r=3

V=[tex]\pi 3^{2} \frac{8}{3}[/tex]

v=75.4

Step-by-step explanation:

32 / 2 using long division

The  goalie saved 70% of the shots.

A percentage is a number that tells us how much out of 100 and can also be written as a decimal or a fraction.

Given that, a Goalie's saves (•) and goals scored against (x)

The number of save shot = 14

The number of goals scored against = 6

The total numbers of shots = 20

A goalie's safe percentage is calculated by dividing the number of saves by the total number of shots on goal = 14/20x100 = 70%

Hence, The  goalie saved 70% of the shots.

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Answer:

The probability that all five lines will be in use when a customer calls customer service is 1/7776.

What is probability?

The proportion of favorable cases to all possible situations that can occur indicates how likely an event is to occur.

Step-by-step explanation:

Given that there are 5 lines and the probability for each line to be engaged in working hours is 1/6.

So, for all 5 lines to be engaged is

= 1/6 * 1/6 * 1/6 * 1/6 * 1/6

= [tex]\frac{1}{6} ^{5}[/tex]

= [tex]\frac{1}{7776}[/tex]

Therefore, the probability that all five lines are engaged is 1/7776.

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Answer:

Statements:

- When (1, 2) is substituted into the second equation, the equation is true

- The ordered pain (1, 2) is a solution to the system of linear equations

- When (1, 2) is substituted into the first equation, the equation is true.

Step-by-step explanation:

Statement 1:

y= 7/2x - 3/2

2= 7/2 * 1 - 3/2

2= 7/2 -3/2

2=4/2

2=2

Statement 2:

y= -2x + 4

2= -2 ( 1 ) + 4

2= -2 + 4

2 = 2

Statement 6:

y= 7/2x - 3/2

2= 7/2 * 1 - 3/2

2= 7/2 -3/2

2=4/2

2=2

y= -2x + 4

2= -2 ( 1 ) + 4

2= -2 + 4

2 = 2

Answer:

A. Yes, but only within the domain x ≥ 0

Step-by-s+tep explanation:

What you need to know to solve the question:

1. To find an inverse function (f⁻¹(x)) of f(x), rearrange the equation in terms of f(x), in other words, it should be in the form of x = ...

2. Rules of rearranging equations

3. The domain of √x is: x ≥ 0, since you cannot find the square root of a negative number (i.e. < 0)

Find the inverse function of F(x):

According to principles 1 and 2:

F(x) = √x - 6

F(x) + 6 = √x

(F(x) + 6)² = x

x = (F(x) + 6)²

So, the inverse function is:

F⁻¹(x) = (x + 6)²

And since:

G(x) = (x + 6)²

G(x) = F⁻¹(x)

Therefore, the answer is, also in light of principle 3:

A. Yes, but only within the domain x ≥ 0

If the profit function is P(x) = 13x - 741 then the units that must be produced to break even is 57 units.

What is a profit function?

The difference between income and costs is referred to as profit. A relationship that depicts the difference created by subtracting the cost function from the revenue function is called a profit function. The ideal pairing of revenues and expenses to generate the greatest possible profit can be seen on the graph of a profit function.

Here, we have

Given

R(x) = 16x (The revenue function)

C(x) = 3x + 741 (The cost function)

Profit = Revenue - Cost

P(x) = 16x - 3x - 741

P(x) = 13x - 741

Hence, the profit function P(x) is  13x - 741.

For the company to break even, R(x) = C(x)

16x = 3x + 741

13x = 741

x = 57

Hence, if the profit function is P(x) = 13x - 741 then the units that must be produced to break even is 57 units.

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Answer: 23

Step-by-step explanation:

-42+65

or 65-42

= 23

Answer:

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

Step-by-step explanation:

5 up, 2 right

Answer:

9.3 × 10^7

Step-by-step explanation:

93000000 / 10000000 = 9.3

10000000 = 10^7

So scientific notation of 93000000 = 9.3 × 10^7

Answer:

Graph attached below

Step-by-step explanation:

the difference between the two temperatures as 16 degrees F. You must wait for another 6 minutes for the soda to cool down to 60 degrees F.

Since the initial temperature of the soda is 76 degrees F and the desired temperature is 60 degrees F, we can calculate the difference between the two temperatures as 16 degrees F. We also know that the temperature of the ice is at the freezing point of water which is 32 degrees F. This means that the temperature difference between the soda and the ice is 44 degrees F. Since the temperature difference between the soda and the ice is greater than the temperature difference between the desired temperature and the initial temperature, we can divide the desired temperature difference (16 degrees F) by the temperature difference between the soda and the ice (44 degrees F) and multiply it by the time elapsed (10 minutes) to calculate the remaining time needed for the soda to cool down to the desired temperature. 16/44 * 10 = 6. Therefore, we must wait for another 6 minutes for the soda to cool down to 60 degrees F.

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The equation has one repeated rational number solution. thus Option C is correct.

A quadratic equation is the second-order degree algebraic expression in a variable. the standard form of this expression is  ax² + bx + c = 0 where a. b are coefficients and x is the variable and c is a constant.

The given equation is the quadratic equation:

[tex]5x^2-x-3=0[/tex]

It is required to determine the number and type of solutions.

Noted that If the discriminant equals zero, the equation has one repeated rational number solution.

If the discriminant is positive, then the equation has two real solutions.

If the discriminant is negative, then the equation has two imaginary solutions.

If the discriminant is a perfect square, then then the equation has two real rational number solutions, it has two irrational number solutions.

Calculate the discriminant of the equation [tex]5x^2-x-3=0[/tex] by substituting a= 5, b=-1  and c= 3  into the discriminant formula:

Since the discriminant equals zero, it follows that the equation has one repeated rational number solution.

The equation has one repeated rational number solution.

Option C is correct.

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y = 3x + 5 is a linear relationship with a slope of 3.

A straight line is formed on the graph by the equation y=2x+1, which is a linear equation. The value of y eventually rises by twice the value of x + 1. This happens when the value of x grows.

A linear graph is one that displays a single straight line for each given relation. A straight line is what the word "linear" denotes. A straight line graph linking points displayed on x and y coordinates is known as a linear graph.

A linear non - proportional relationship could be written with as a slope - intercept with a non - zero intercept value. One such relationship with a slope of 3 can be expressed thus :

y = 3x + 5

Here, the linear relationship, has a slope value of 3 and an intercept value of 5. The function cannot be proportional due to the presence of a non-zero constant

Hence, Using a graphing calculator, the sketch of the linear relationship is attached.

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To solve the system of differential equations using Theorem 1, we first need to find the eigen values and eigen vectors of the matrix X'.

The characteristic equation is given by |X' - λI| = 0, where I is the identity matrix. Solving this equation, we find the eigenvalues to be λ = -2, 0, 3, 5.

Next, we need to find the corresponding eigenvectors. For each eigenvalue, we solve the equation (X' - λI)v = 0 to find the eigenvector.

For λ = -2, the eigenvector is v = [-2 -2 -2 -2 -2 1 -2 -2 -2 -2 -2 1 -2 -2 -2 1]

For λ = 0, the eigenvector is v = [-4 1 -2 -2 4 -3 2 -2 1 -2 -5 0 1 0 4 -1]

For λ = 3, the eigenvector is v = [4 -2 -2 -2 -4 3 -2 -2 -1 -2 5 0 -1 0 -4 1]

For λ = 5, the eigenvector is v = [0 2 2 2 0 -1 2 2 2 2 0 -1 2 2 0 -1]

Using these eigen values and eigen vectors, we can use Theorem 1 to find the general solution to the system of differential equations:

X(t) = c1e^(-2t)v1 + c2e^(0t)v2 + c3e^(3t)v3 + c4e^(5t)v4

where c1, c2, c3, and c4 are constants.

To show that this solution solves the original system of differential equations, we substitute it into the given differential equation:

X'(t) = -2c1e^(-2t)v1 + 0c2e^(0t)v2 + 3c3e^(3t)v3 + 5c4e^(5t)v4

This simplifies to:

X'(t) = [-4 0 0 0 8 -3 4 0 1 0 -5 0 2 1 4 -1 ]

which is equal to the given matrix X'(t). Therefore, the solution we have found does indeed solve the original system of differential equations.

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