A fair dice is rolled 3 times in a row. The outcomes are shown below.
Calculate the probability of all three events occurring.

Roll Outcome
1st even
2nd prime
3rd multiple of 5

Answer:

65

Step-by-step explanation:

Answer:

like 149

Step-by-step explanation:

big brain

The procedures below can be used to determine a triangle's length BD.

In th that is presented;

The holding ratio is, therefore, as follows:

12 : x = 27 : x + 5

12 / x = 27 / (x + 5 )

When we cross multiply these, we obtain:

12 ( x + 5 ) = 27x

12x + 60 = 27x

Taking the x values on one side, we obtain:

27x - 12x = 60

15x = 60

x = 60/15

x= 4

The length of line BD is:

= BC + CD

= x + x + 5

After entering the value of x, we get

= 4 + 4 + 5

= 13

As a result, the length of the line BD is 13.

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Dendrites first receive electrical signals from other neurons, after which an action potential is sent down the axon until it reaches the axon terminal. The vesicles then set the neurotransmitters in motion. Neurotransmitters will then travel to the synapse, where receptors will begin to transmit the signal.

A neurotransmitter is a signaling molecule that a neuron secretes to affect another cell across a synapse. The cell receiving the signal, which could be any major body part or target cell, could be another neuron or a gland or muscle cell. Neurotransmitters are chemical messengers required by your body to function. They are in charge of moving chemical signals (called "messages") from one neuron (nerve cell) to the next target cell. The next target cell might be another nerve cell, a muscle cell, or a gland.

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Answer: -13t+8.2

Step-by-step explanation:

When combining like terms, only the same terms can be combined. In this case, it is -5.2t and -7.8t are the same. If we add them together, we got -13, unfortunately, 8.2 is different, so our simplest form is

-13t+8.2.

The sample distribution is approximately normal with a mean of 10 and a standard deviation of 1.

The distribution is slightly skewed to the left, with a slightly higher probability of lower readings than higher readings.

(b) If the sample minimum is lower than 9, this would indicate that the thermostat manufacturer's claim is false. This is because the manufacturer claims that the temperature will not go below 10 degrees, but the sample minimum of 9 suggests that it does. The probability of observing a sample minimum of 9 or lower is 0.25, which indicates that the probability of the temperature dropping below 10 degrees is relatively high.

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On solving the provided question, we can say that from the graph we have a equation [tex]y = x^2 - 3x - 4[/tex] => y= x(x+1) - 4(x+1) => y = (x+1)(x-4)

Mathematicians use here  graphs to logically convey facts or values using visual representations or charts. A graph point will typically reflect a relationship between two or more things. Nodes, or vertices, and edges make form a graph, a non-linear data structure. Glue together the nodes, often referred to as vertices. This graph has vertices V=1, 2, 3, 5, and edges E=1, 2, 1, 3, 2, 4, and (2.5), (3.5). (4.5). Statistical charts (bar charts, pie charts, line charts, etc.) graphical representations of exponential growth. a logarithmic graph in the shape of a triangle

from the graph we have a equation

[tex]y = x^2 - 3x - 4[/tex]

y= x(x+1) - 4(x+1)

y = (x+1)(x-4)

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The block's density can be calculated using the equation d=25g/8.4 cm.

Two things are equal, according to an equation.

For instance, 10 + 2 equals 6 + 6.

Simply put, this means that 10 plus 2 equals or is the same as 6 plus 6.

In an equation, the unknown could be present, as in 10 + x = 6 + 6.

So, find the block's volume first:

= Length * Width * Height

= 2 x 3 x 1.4

= 8.4 cm

Now that you know the volume and the mass, you can add them to the density formula, which is as follows:

= Mass / Volume

Assuming density is represented by the symbol b, the formula would be:

d = 25 g / 8.4 cm

Therefore, the block's density can be calculated using the equation d=25g/8.4 cm.

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Correct question:

A student is trying to identify the composition of a pure metal block by determining its density. The student records the mass of the sample to be 25.00 g. The rectangular block is 2.0 cm x 3.0 cm x 1.4 cm.

Which equation is necessary to determine the density sample?

The graph that shows a system of equations with infinite solutions is graph C.

Here we have some systems of equations graphed.

A system of equations has infinite solutions when both equations are equivalent (in this case, both equations represent the same line)

Then we we look at the graph of the system of equations we will see a single graph instead of two, like what we can see on option C.

The graph that shows infinite solutions is graph C (the one in the top right side).

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The possible values the variable can take on and how often we observe each of the possible values of a variable.

The possible values the variable can take on and how often we observe each of the possible values of a variable.

A distribution of a variable describes the possible values the variable can take on and how often we observe each of the possible values of a variable. It does not describe the experimental units involved in the study or the explanatory and response variables of a study, nor does it describe the observational units involved in the study. The possible values the variable can take on and how often we observe each of the possible values of a variable.

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No, the standardized test statistic t does not indicate that you should reject the null hypothesis.

The value of the test statistic t only tells you how much of an effect the independent variable has on the dependent variable. To determine whether to reject the null hypothesis, you must compare the value of t to a critical value based on the sample size, the level of significance, and the degrees of freedom.

The standardized test statistic t does not indicate whether you should reject the null hypothesis. To determine this, you must compare the value of t to a critical value based on the sample size, level of significance, and degrees of freedom.

No, the standardized test statistic t does not indicate that you should reject the null hypothesis.

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The positive possibility of the [tex]x[/tex] component in a vector in the XY plane that has a magnitude of 90 units and the [tex]y[/tex] component is -45 units is [tex]+77.94[/tex].

Given,

           The magnitude of the vector, [tex]M[/tex] = 90 units

           The y component of the vector, [tex]y[/tex] = -45 units

We know that,

            The magnitude of the vector can be expressed as:

             [tex]M^{2} = x^{2} +y^{2}[/tex]

             [tex]x^{2} =M^{2} -y^{2}[/tex]

Substitute the values in the above equation, and we get :

            [tex]x^{2} = (90)^{2} - (-45)^{2}[/tex]

            [tex]x^{2} = 8100 - 2025[/tex]

            [tex]x^{2} = 6075[/tex]

            [tex]x=[/tex] ±[tex]77.94[/tex]

Hence, the Positive possibility of [tex]x[/tex] the component is 77.94

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3/10

Explanation

The total number of people that are studying neither Russian nor Spanish will be subtracted from the total number of people

i.e 80-23=57

Now let's calculate those that studies both languages (x)

50+31-x=57

-x=57-50-31

-x=-24

x=24

probability of choosing those that studies both Spanish and Russian is

24/80=3/10

Answer:

33 out of 80 pupils

Step-by-step explanation:

Total = 80 pupils

Studying Russian and Spanish = 80 - 23;

= 57 pupils

Out of 57 pupils, 50 pupils study Russian = 7 diff.

Out of 57 pupils 31 pupils study Spanish = 26 diff.

Venn diagram you mentioned illustrates the connection between A, B, and C, three sets. set (A n B), which is the intersection of  two sets, is represented as region where A and B overlap. Scroll down for more detail.

A Venn Diagram is a pictorial representation of the relationships between sets.

The relationship between the three sets A, B, and C is depicted in the Venn diagram you are referring to. The set (A n B), which is the intersection of the two sets, is represented as the region where A and B overlap. The set (A U C) or the union of the sets A and C is represented by the region outside of this intersection but inside the larger circles. In the universal set, this is sometimes referred to as the complement of (A n B).

The following figures show how to shade regions of Venn Diagrams for two sets:

A intersect B, A union B, A’, A intersect B’, A’ intersect B, A union B’,

A’ union B, A’ union B’ = (A intersect B)’, A’ intersect B’ = (A union B)’.

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The probability of the person over 40 years of age who drinks root beer is equal to 0.1176.

As given in the question,

Total number of people is equal to 255

From the given table :

Number of people who drinks root beer and over 40 years of age is

= 30

Required probability  who drinks root beer and over 40 years of age is given by :

= ( Number of favourable outcomes ) / ( total number of outcomes )

= ( 30 / 255 )

= 0.1176

Therefore, the required probability of the people over the age of 40 years and drinks root beer is given by 0.1176.

The above question is incomplete , the complete question is :

                                          Cola                     Root Beer              Lemon-line

Under 21 years of age  :       40                        25                         20

Between 21 and 40      :        35                        20                        30

Over 40 years of age   :        20                        30                        35                 If one of the 255 subjects is randomly selected, find the probability that the person is over 40 years of age or that they drink root beer.

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The Mean Value Theorem states that there exists a point c in the interval (a,b) such that f'(c) equals the function's average rate of change throughout [a,b] if a function f is continuous on the closed interval [a,b] and differentiable on the open interval (a,b).

The Mean Value Theorem states that if a function f is continuous on the closed interval [a, b] and differentiable on the open interval (a, b), then at some point c on the interval (a, b), f'(c) must equal the function's average rate of change over [a, b].

There is at least one point on a planar arc between two endpoints where the tangent to the arc is parallel to the secant between its ends.

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The complete question is: Explain why the Mean Value Theorem does not apply to the function on the interval [0,6].

Answer: (x,y)=(12,8)

Step-by-step explanation:

To create the tables and calculate the average mean, we need to have a set of data that we want to organize in a tabular form. The table should have columns for the data values, frequency, and frequency subtotal. The frequency column will show how many times a particular data value appears in the set.

The frequency subtotal column will be used to find the sum of the product of each data value and its corresponding frequency.

The average mean can be calculated by dividing the sum of the frequency subtotal by the total frequency.

Mean = ([tex]f_{1}x_{1}[/tex] + [tex]f_{2}x_{2}[/tex]+ [tex]f_{3}x_{3}[/tex]+ ... + [tex]f_{n}x_{n}[/tex]) / ([tex]f_{1}[/tex]+[tex]f_{2}[/tex]+[tex]f_{3}[/tex]+...+[tex]f_{n}[/tex])

By creating this table, we can easily see the distribution of the data and can calculate the average mean. This method of organizing data in tabular form is commonly used in statistics and data analysis, and it is an efficient way of summarizing and understanding large sets of data.

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Answer:

a. A function f such that the equation f(x + h) = f(x) + f(h) is not true for all values of x and h is a function that is not linear. For example, a function f(x) = x^2 is not linear because it does not satisfy the equation f(x + h) = f(x) + f(h).

b. A function f such that the equation f(x + h) = f(x) + f(h) is true for all values of x and h is a linear function. For example, a function f(x) = mx + b, where m and b are constants, is a linear function because it satisfies the equation f(x + h) = f(x) + f(h).

c. Let f(x) = 2x. If we choose x = 3 and h = 2, then f(x + h) = f(3 + 2) = f(5) = 2(5) = 10, and f(x) + f(h) = f(3) + f(2) = 2(3) + 2(2) = 6 + 4 = 10. Therefore, the equation f(x + h) = f(x) + f(h) is true in this case.

The cost function is minimized when the predicted values are as close as possible to the actual values, which is achieved by finding the optimal values of the parameters θ.

What is the least squares cost function?

The least squares cost function for linear regression is used to measure the difference between the predicted values and the actual values of the target variable. It is defined as the sum of the squared differences between the predicted values and the actual values.

The compact form of the cost function is given by:

J(θ) = (1/2m) * Σ(i=1 to m) (hθ(x^i) - y^i)^2

where:

hθ(x^i) is the predicted value of the target variable for the ith sample, given by the hypothesis function hθ(x^i) = θ^T * x^i

y^i is the actual value of the target variable for the ith sample

θ is the vector of parameters for the linear regression model

m is the number of samples in the dataset

Hence, The cost function is minimized when the predicted values are as close as possible to the actual values, which is achieved by finding the optimal values of the parameters θ.

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Answer:

(3,0)

Step-by-step explanation:

x - 2

5 - 2 = 3

3 would be our x value or our input value.

When the input is 3, the output is

3 - 3 = 0

This gives us the ordered pair

(3,0)

Answer:

1 hour 50 minutes

Step-by-step explanation:

Total distance from parking lot to entrance = 22 miles

We will assume that the total distance from entrance to lot is also 22 miles

The average speed of the boat = 20mph

The average speed of the train is 10 mph faster = 20 + 10 = 30 mph

Time taken for travel from parking lot to park by train  = 22/30 hours

22/30 hours = 22/30 x 60 minutes = 44 minutes

On the way back, the boat was taken
Distance = 22 miles, speed = 20 mph

Time taken = distance/speed = 22/20 hours

22/20 hours = 22/20 x 60 minutes = 66 minutes

Total round trip time taken = 44 + 66 = 110 minutes

110 minutes = 110/60 hours

= 1 50/60 = 1 hour 50 minutes

The standard deviation is $8,000. So, the standard deviation measured in thousands of dollars, is 8. and The mean is the average. So the average, measured in thousands of dollars, is 56.

Average salary: 56

Standard deviation of the salary: 8

$56,000 dollars is 56 thousand dollars.

$8,000 is 8 thousand dollars.

The mean is the average. So the average, measured in thousands of dollars, is 56.

The standard deviation is $8,000. So, the standard deviation measured in thousands of dollars, is 8.

complete question

Let X denote the average starting salary for 2014 U.S. college graduates, measured in dollars. Suppose that the average annual salary is $56,000 dollars, with a standard deviation of 8,000. Find the mean and standard deviation when salary is measured in thousands of dollars.

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The least squares residuals e are heteroskedastic and correlated, even if the disturbance vector e is homoskedastic and uncorrelated.

The least squares residuals e are heteroskedastic and correlated even if the disturbance vector e is homoskedastic and uncorrelated because the variance of the observed errors, Var(e) = Var(X'e) = X'Var(e)X. As X'e is not a vector of independent random variables, the variance-covariance matrix of the errors is not diagonal and therefore the errors are correlated and heteroskedastic. This can be calculated by the formula Var(X'e) = X'Var(e)X. This formula shows that the variances of the least squares residuals e depend on the parameters of the model, and that the errors are therefore correlated and heteroskedastic.

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Answer:

26

Step-by-step explanation:

To find the mean score of all six quizzes, you add all the scores and divide by the number of examinations. So if Percy's first five quiz scores are 24, 27, 22, 21, and 18, the total is 112. To find the mean score of all six quizzes, add Rachael's sixth quiz score to the total and divide by 6.

If the mean score of all six quizzes is 23, then the total score of all six examinations is 138 (23 x 6).

To find the score Rachael needs on her sixth quiz, you subtract Percy's score (112) from the total score of all six examinations (138)

Rachael needs to score 26 on her sixth quiz (138 - 112) for the mean and median of her quiz scores to be 23

The total cost E expressed as a function of q, wherein q is the number of widgets manufactured=  E = 9q + 45,000.

Changes in sales or production volume have no effect on costs or expenses that are constant. They cover costs like rent, insurance, membership dues and subscriptions, equipment leases, loan payments, depreciation, management salaries, and advertising.

Variable costs are expenses that alter as the volume of a product or service that a company produces fluctuates. The total of marginal costs over all units produced is what is referred to as variable costs. They may also be regarded as ordinary expenses. The two parts of total cost are fixed costs as well as variable costs.

The fixed expenses = $45,000,

The variable expenses =  $9

E = V + F

E = 9q + 45,000

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[tex]$\left(9 \times 10^{-3}\right)^2$[/tex] can be wrltten in sclentlflc notation as[tex]$8.1 \times 10^{-5}$[/tex]

A number is written in scientific notation if it can be written as [tex]$p \times 10^x$[/tex]where p has value greater than or equal to 1 and less than 10 and x is an integer.

Given[tex]- $\left(9 \times 10^{-3}\right)^2$[/tex]

Flrst applying [tex]$(a b)^2=a^2 b^2$[/tex]

We get, [tex]$\left(9 \times 10^{-3}\right)^2=9^2 \times\left(10^{-3}\right)^2$[/tex]

using property of exponents [tex]$\left(a^n\right)^m=a^{n m}$[/tex]

[tex]$9^2 \times\left(10^{-3}\right)^2=81$[/tex] times [tex]$10^{-6}$[/tex]

Thus, we have to write 81 times[tex]$10^{-6}$[/tex]In scientific notation,

Multiply and divide by 10 , we get

81 times [tex]$10^{-6}=8.1 \times 10^{-5}$[/tex]

Thus, [tex]$\left(9 \times 10^{-3}\right)^2$[/tex]can be written in scientific notation as [tex]$8.1 \times 10^{-5}$[/tex]

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The height of the tree is approximately 51.4 feet, to the nearest hundredth of a foot.

What is trigonometry?

Trigonometry is a branch of mathematics that deals with the relationships between the angles and sides of triangles, particularly right triangles. Trigonometry is based on the study of the ratios of the sides of a right triangle to its angles, these ratios are called trigonometric functions and are represented by sine, cosine and tangent.

To solve the problem, we can use the tangent function. The tangent of an angle is the ratio of the opposite side to the adjacent side in a right triangle.

Given that the angle of elevation to the tree is 53 degrees, we can use the tangent function to find the height of the tree.

Let h be the height of the tree and x be the distance from the point on the ground to the tree.

tan 53 = h/x

h = x * tan 53

h = 89 * tan 53

= 89*(√3/3) ≈ 89*0.577 ≈ 51.4

Hence, the height of the tree is approximately 51.4 feet, to the nearest hundredth of a foot.

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A total of 57 student tickets and a total of 41 adult tickets were sold to generate a total revenue of $703.

A mathematical statement known as an equation is composed of two expressions joined together with the equal sign. A formula would've been 3x - 5 = 16, for illustration.. When this equation is solved, we discover that the quantity of the variables x is 7.

The following response has been produced in a straightforward, step-by-step manner.

Step: 1

Price of each student ticket = $ 5.50

Price of each adult ticket = $ 9.50

If x Equals the quantity of student tickets sold

If y Equals the quantity of adult tickets sold,

Step: 2

(i). It is given that a total of 98 tickets were sold.

Therefore, we can write as -

(Number of student tickets sold) + (Number of adult tickets sold) = 98

x+y =98 -----------equation (1)

Step: 3

(ii). The total revenue earned from the sale of tickets was $703.

Therefore, we can write as -

(Revenue earned from selling student tickets) + (Revenue earned from selling adult tickets) = 703

(Price of each student ticket×Number of student tickets sold) + (Price of each adult ticket ×Number of adult tickets sold) = 703

(5.50 × x)+ (9.50 × y) =703

5.50x+9.50y =703 ----------equation 2

Step: 4

System of Equations :

1) x+y =98

2) 5.50x + 9.50y =703

On performing (eq 2) - 5.50(eq 1), we get -

(5.50x +9.50y) - 5.50(x+y)=703-5.50(98)

5.50x + 9.50y - 5.50x-5.50y=703-539

4y=164

y=164/4

y=41

The operation was performed to reduce the equation in a single variable.

Step: 5

On substituting the value of y=41 in eq 1 , we get-

x+41 =98

x= 98-41

x=57

Thus, a total of 57 student tickets and a total of 41 adult tickets were sold to generate a total revenue of $703.

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The interior angle of a regular polygon with n sides is (n-2) times 180 degrees divided by n.

The exterior angle of a regular polygon with n sides is 360 degrees divided by n.

A polygonal shape is what?

A polygon is a two-dimensional, closed form that is flat or planar and is limited by straight sides. Its sides are not curled. A polygon's edges are another name for its sides. The vertices (or corners) of a polygon are the places where two sides converge.

Given that 2 * interior angle = 7 * exterior angle, we can set up the following equation:

2 * ( (n-2) * 180 / n ) = 7 * ( 360 / n )

Solving for n, we get:

n = (1440 / (2*(7-180)) ) = 9

So the polygon has 9 sides. To find the interior angle, we substitute n back into the formula:

(n-2) * 180 / n = (9-2) * 180 / 9 = 160

So the interior angle of the polygon is 160 degrees.

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Answer:

HJ = 8.4

Step-by-step explanation:

tangents to a circle from an external point are congruent , then

HJ = HI

the angle between a tangent and a radius of the circle at the point of contact is a right angle.

so Δ OHI is right with ∠ OIH = 90°

using Pythagoras' identity in the right triangle

HI² + OI² = OH² , that is

HI² + 8² = 11.6²

HI² + 64 = 134.56 ( subtract 64 from both sides )

HI² = 70.56 ( take square root of both sides )

HI = [tex]\sqrt{70.56}[/tex] = 8.4

Then

HJ = HI = 8.4