what are 2 diffrent ways of factoring -3x -9​

No, the given matrix cannot be the transition matrix of a regular Markov chain.

In a regular Markov chain, every state must have a positive probability of reaching any other state in a finite number of steps. This means that every entry in the transition matrix must be strictly positive.

However, in the given matrix:

[0.4 0.6] [ 1 0 ]

The entry in the second row and second column is zero, indicating that there is no transition from state 2 to any other state. Therefore, it violates the condition of a regular Markov chain, and the answer is "No."

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Answer:

what was your old answer?

Step-by-step explanation:

so I could solve this

The head diameters are normally distributed with a mean of 7.1 inches and a standard deviation of 0.8 inches.

Due to financial constraints, the helmets will be designed to fit all men except those with head diameters in the smallest 0.5% or largest 0.5%. To determine the minimum head diameter that will fit the targeted clientele, we can use the z-score formula. A z-score represents the number of standard deviations a data point is from the mean. We'll need to find the z-score that corresponds to the 0.5 percentile (smallest 0.5%) using a standard normal distribution table or calculator. The z-score for the 0.5 percentile is approximately -2.58. We can now plug this z-score into the formula to find the corresponding head diameter:

Head Diameter = Mean + (z-score × Standard Deviation)
Head Diameter = 7.1 + (-2.58 × 0.8)
Head Diameter = 7.1 - 2.064
Head Diameter ≈ 5.036 inches
Therefore, the minimum head diameter that will fit the targeted clientele is approximately 5.036 inches.

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Minimum sample size (n) = 15

To determine the minimum sample size required, we can use the formula:

n = (Zα/2 * σ / E)^2

Where:
- n is the minimum sample size
- Zα/2 is the z-score at the 95% confidence level, which is 1.96
- σ is the population standard deviation, which is given as 3.8
- E is the maximum error we can tolerate, which is 2 units in this case

Substituting the values, we get:

n = (1.96 * 3.8 / 2)^2
n = 27.44

Rounding up to the nearest whole number, we get a minimum sample size of 28.

Therefore, we need to sample at least 28 individuals from the normally distributed population to be 95% confident that the sample mean is within two units of the population mean, assuming a population standard deviation of 3.8.

To determine the minimum sample size required for a 95% confidence level, we'll need to use the following formula:

n = (Z * σ / E)^2

where:
- n is the minimum sample size
- Z is the Z-score corresponding to the desired confidence level (1.96 for a 95% confidence level)
- σ is the population standard deviation (3.8 in this case)
- E is the margin of error (2 units in this case)

Step 1: Identify the values
Z = 1.96 (from the 95% confidence level)
σ = 3.8
E = 2

Step 2: Plug the values into the formula
n = (1.96 * 3.8 / 2)^2

Step 3: Calculate the result
n = (7.528 / 2)^2
n = (3.764)^2
n ≈ 14.15

Since the sample size must be a whole number, round up to the nearest whole number to ensure the desired level of confidence is achieved.

Minimum sample size (n) = 15

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The density of X () is given by the formula: f (t) = n t^n-1 (1-t)^0 0 < t < 1.

X () is the maximum order statistic of a random sample of size n from the uniform distribution with parameters 0 and 1. The cumulative distribution function (CDF) of X () is given by the probability that the maximum value of the sample does not exceed the threshold t:

The PDF can be obtained by differentiation as:where the constant C is chosen such that the integral over the entire real line of f (t) is equal to one.

For that purpose, let U = X, V = X, and consider the joint density of (U, V) with integration limits 0 < u < 1 and u < v < 1, which is given by:

Now, integrate this joint density over the triangle 0 < u < v < 1.

By Fubini's theorem, the result is independent of the order of integration:

To get the value of C, notice that the inner integral is the CDF of a beta distribution with parameters (2, n-1), so C can be found as:

Thus, the density of X () is given by the formula: f (t) = n t^n-1 (1-t)^0 0 < t < 1.

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It’s a Rational number

Answer:

(0,-4)

Step-by-step explanation:

3(0) - (-4) = 4

0 + 4 = 4

Hypothesis testing is a statistical method in which an analyst conducts a hypothesis test on a sample of data to draw inferences about the entire population.
1. Hypothesis tests are one of Inferential statistics. True. Inferential statistics, which deals with generalizing sample data to the population from which the sample was taken, includes hypothesis testing.
2. Mean is a central tendency measurement it is necessary to be one of the raw data. False. The mean measures central tendency calculated by adding all the values and dividing by the number of observations. The mean value does not have to be one of the raw data values. It's just a mathematical calculation used to represent a typical value for a dataset.
3. Calculation of the mean considers all the data, while other measurements do not consider all raw data. True. The mean calculation considers all data points, whereas other measures of central tendency, such as the median and mode, do not. This property makes the mean more representative of the entire data set.
4. Mode, median, and mean are single when that data is normally distributed. False. The mode, median, and mean are distinct when the data is non-normal. The mode, median, and mean are identical when data is normally distributed.
5. Mutually exclusive events can contain common elements. False. If two events are mutually exclusive, they cannot occur simultaneously. They have no elements in common by definition.
6. In the standard normal distribution, μ=1 and σ=0. False. In the standard normal distribution, the mean (μ) is 0, and the standard deviation (σ) is 1.

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In the given problem, m∠A = (8x - 10)° and m∠B \(= (8x - 2)\) °. Since ∠A and ∠B are supplementary angles, the sum of their measures must be 180°.

Supplementary angles are those whose measures add up to 180 degrees. Therefore, we have:

m∠A + m∠B = m∠C, where ∠C is the supplementary angle of ∠A and ∠B.

Substituting the given values, we get:

\((8x-10) + (8x-2) = 180\)

Simplifying this equation, we get:

\(16x - 12 = 180\)

Adding 12 to both sides, we get:

\(16x = 192\)

Dividing both sides by 16, we get:

\(x = 12\)

Now, we can find the measure of ∠C by substituting the value of x in the expression for m∠C:

\(m∠C = (8x-2) = (8*12-2) = 94\) degrees

Substituting x = 11.5 in m∠A, we get m∠A  \(= (8 x 11.5 - 10)° = (92 - 10)° = 82°\) . Therefore, the measure of ∠A is 82°.

Therefore, the measure of ∠A is: m∠A =   \((8x-10) = (8*12-10) = 86\) degrees. Hence, the measure of ∠A is \(86\) degrees.

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x + 18 = 9x

collect like terms

18 = 9x - x

18 = 8x

Divide through by 8

=========================================================

Explanation:

There are A = 10 red cards out of B = 10+10 = 20 cards total.

A/B = 10/20 = 1/2 represents the probability of picking a red card.

After that card is selected, there are C = 10 black cards out of D = 20-1 = 19 cards left. The fraction C/D = 10/19 represents the probability of picking a black card where we did not put the first red card back.

Multiply the two fractions we found.

(A/B)*(C/D) = (1/2)*(10/19) = 10/38 = 5/19 is the probability of getting the first card that is red and the second card that is black.

the gradients of each of the sides of the triangle are \(m_1=\frac{8}{5}, m_2=\frac{4}{-9} and m_3=-3\)

Given  vertices of triangle ABC are A(2,-3),B(7,5) and C(-2,9).

Let's find out the gradients of each side of the sides of the triangle using given points.

Formula for Gradient  using two points.

Gradient denoted by m.

Gradient can also called as slope.

First gradient using two points are A(2,-3) & B(7,5)

           \(m_1=\frac{y_2-y_1}{x_2-x_1}\)

           \(m_1=\frac{5-(-3)}{7-2}\)

           \(m_1=\frac{8}{5}\)

Second gradient using two points are B(7,5) & C(-2,,9)

            \(m_2=\frac{y_2-y_1}{x_2-x_1}\)

            \(m_2=\frac{9-5}{-2-7}\)

            \(m_2=\frac{4}{-9}\)

Third gradient using two points are   A(2,-3) & C(-2,9)

              \(m_3=\frac{y_2-y_1}{x_2-x_1}\)

              \(m_3=\frac{9-(-3)}{-2-2}\)

              \(m_3=\frac{12}{-4}\)

              \(m_3=-3\)

Therefore, the gradients of each of the sides of the triangle are \(m_1=\frac{8}{5}, m_2=\frac{4}{-9} and m_3=-3\)

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Answer:

The answer is C

Step-by-step explanation:

Answer:

1 1/3 minutes

Step-by-step explanation:

Gasoline is pumped at rate of 3 gallons per minute into a container that already has 4 gallons inside

From the above question, we are to calculate the time at which the gasoline is pumped into the container

Hence:

Time = Number of gallons/Rate

Number of gallons = 4

Rate = 3 gallons per minutes

Hence:

Time = 4 gallons/3 gallon per minutes

Time = 1 1/3 minutes

The time at which the gasoline is pumped into the container is 1 1/3 minutes

Answer:

Step-by-step explanation:

g(x) = x^2 + 6

f(x^2 + 6) = 2(x^2 + 6) + 1 = 2x^2 + 12 + 1 = 2x^2 + 13

The number of cookies in the jar initially was 42

To find out how many cookies were in the jar initially, we can use algebra to represent the problem. Let x be the number of cookies in the jar initially. After Latoya took half of the cookies, Mark took 1/3 of the remaining cookies, Kandi took 1/4 of the remaining cookies, and Shannon took 1 cookie, there are 2 cookies left in the jar.

We can use this information to set up the equation:

x/2 - (x/2)/3 - (x/2)/4 - 1 - 2 = 0.

By solving this equation, we get x = 42. This means there were 42 cookies in the jar initially. To find out how many cookies were there before Latoya came, we just add the 2/3 of a cookie that was left over to the 2 whole cookies we know of.

So, 42+2/3 = 42.67 which means 42 cookies were there before Latoya came.

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Answer:

\(\frac{1}{5}\)

Step-by-step explanation:

There are a total of 30 number between 1 and 30, so the total events is 30.
Now for the favorable events (A: even and multiple of 3) there's a total of 5 numbers (6,12,18,24,30)

Using classic probability law the probability is given by the favorable events between the total events

\(P(A)=\frac{6}{30}=\frac{1}{5}\)

Isaac started an iPhone screen replacement business. he charges $15 for each screen his shop replaces, the value of the marginal product of labor for the 5th worker is mathematically given as  

M=$90

Generally, It is the change in value or production that occurs when a new worker is hired.

Therefore, the value of the output from hiring 4 & 5workers

V4= $ 15* 43

V4= $ 645

and V8

V5=$ 15 * 49

V5 = $ 735

In conclusion, the marginal product

M= $ 750 - $ 645

M=$90

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Answer

C is WRONG

Step-by-step explanation:

The correct answer is A

The fog(1) is -41.

Let ƒ(x) = 5x2 – x + 1 and g(x) = –3x.

Evaluate the composition (ƒ ∘ g)(1).

= f(g(x) where x = 1

= f(-3x)

= -5(-3x)² - (-3x)+ 1

=-5(9x²)+3x+1

fog(x) = -45x²+3x+1

fog(1) = -45+3+1

= -41

Hence, The fog(1) is -41.

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Answer:

-5x + 2y=2

Step-by-step explanation:

\(- 7x + 3y = 2 \\ - 2x + y = 0 \\ subtracting \: this.we \: have \\ ( - 7x \: + 3y - 2) - ( - 2x + y) \\ - 7x + 2x + 3y - y - 2 \\ - 5x + 2y - 2 \\ therefore \: we \: have \\ - 5x + 2y = 2\)

Answer:  84% Decay.

Step-by-step explanation:

The constant percent rate of change of the function is 16% growth

An exponential function is a mathematical function of the following form: f ( x ) = \(a^x\). where x is a variable, and a is a constant called the base of the function.

Given:

The equation of the function

f(x) = 28\((1.16)^x\)

We know thar the exponential function is represented as

y =\(ab^x\)

Where b represents the growth or decay factor

So, we have

b = 1.16 which is greater than 1.

The percent rate of change is then calculated as

Rate = b - 1

Rate = 1.16 - 1

Rate = 0.16

Rate = 16%

Hence, the rate of change is 16% growth

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The second term in the sequence is 0.

To solve the problem, we can use the fact that each term after the second is the sum of the two preceding terms. Let's call the first term a and the second term b. Then, according to the problem, we have:

a = 3 (the first term is 3)

b = ?

c = a + b = 3 + b

d = b + c = b + (3 + b) = 2b + 3

e = c + d = (3 + b) + (2b + 3) = 3b + 6

We also know that the fifth term is 3, so we can set e equal to 3 and solve for b:

3b + 6 = 3

3b = -3

b = -1

Therefore, the second term in the sequence is 0, since each term after the second is the sum of the two preceding terms and the first term is 3.

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In a unit vector notation, the net force on the loop is (3.2×10⁻³ N)​​

Vector:

In math vector is the object containing both magnitude and direction

Given,

In the figure, a long straight wire carries a current i1​=30A  and a rectangular loop carries current i2​=20A. Take the dimensions to be a=1 cm, b = 8cm and L = 30cm.

Here we need to find the unit-vector notation for the net force on the loop due to i1​.

Here let's divide the loop into 4 parts i.e, they are witten as,

=> 1−2 , 2−3 , 3−4 , and 4−1

Then the force F on a wire of length L carrying current I in magnetic field of strength B (constant) is written as,

=> F=L(I×B)

Now, the force on part  2−3  and  4−1  is equal but opposite , hence cancelled, so the remaining are

⟹F2−3​+F4−1​=0

Therefore, Fnet​=F1−2​+F3−4​

Then the value of the net force is

=> (3.2×10⁻³ N)​​

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The first-order Adams-Moulton formula derived as: y(t+h) ≈ y(t) + h/2 * [f(t, y(t)) + f(t+h, y(t+h))].

The first-order Adams-Moulton formula is equivalent to the trapezoid rule for approximating the integral in ordinary differential equations.

The first-order Adams-Moulton formula is derived by approximating the integral in the ordinary differential equation (ODE) using the trapezoid rule.

To derive the formula, we start with the integral form of the ODE:

∫[t, t+h] y'(t) dt = ∫[t, t+h] f(t, y(t)) dt

Approximating the integral using the trapezoid rule, we have:

h/2 * [f(t, y(t)) + f(t+h, y(t+h))] ≈ ∫[t, t+h] f(t, y(t)) dt

Rearranging the equation, we get:

y(t+h) ≈ y(t) + h/2 * [f(t, y(t)) + f(t+h, y(t+h))]

This is the first-order Adams-Moulton formula.

To verify its equivalence to the trapezoid rule, we can substitute the derivative approximation from the trapezoid rule into the Adams-Moulton formula. Doing so yields:

y(t+h) ≈ y(t) + h/2 * [y'(t) + y'(t+h)]

Since y'(t) = f(t, y(t)), we can replace it in the equation:

y(t+h) ≈ y(t) + h/2 * [f(t, y(t)) + f(t+h, y(t+h))]

This is equivalent to the trapezoid rule for approximating the integral. Therefore, the first-order Adams-Moulton formula is indeed equivalent to the trapezoid rule.

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If a sequence is defined using previous terms, it is known as a recursively defined sequence.

This type of sequence relies on the previous terms to determine the next term in the sequence. The number of terms that are required to define a recursively defined sequence varies depending on the specific sequence. However, if the first few terms of the sequence are given, it can help determine the pattern and the formula used to generate subsequent terms. A good understanding of recursive sequences can be helpful in many areas, including computer programming, mathematics, and finance. A sequence that is defined using its initial terms and a rule relating its subsequent terms to the previous ones is called a recursively defined sequence. In such sequences, each term's value depends on one or more earlier terms. The first few terms serve as the basis, and the recursive formula generates the remaining terms. This approach allows us to find any term in the sequence based on previous ones, ensuring a consistent pattern and progression.

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Answer:

1

Step-by-step explanation:

x+6y=20-10y

x+6y+10y=20

x+16y=20

Given x=4,

=> 4+16y=20

16y=20-4=16

y=1

So, the missing value is 1.

Answer:

X = -5/2

Step-by-step explanation:

Step-by-step explanation:

\(9x + 4 = 5x - 6\)

Collect like terms and simplify

\(9x - 5x = - 6 - 4 \\ 4x = - 10\)

Divide both sides of the equation by 4

\( \frac{4x}{4} = \frac{ - 10}{4} \)

Simplify

\(x = - \frac{5}{2} \)

Answer:

(y² - 7) (y² + 4)

Step-by-step explanation:

y⁴ - 3y² - 28

y⁴ - 7y² + 4y² - 28

y²(y² - 7) + 4(y² - 7)

(y² - 7) (y² + 4)

Answer: The Third one is correct

Step-by-step explanation:

We have that the angle is 330°

Now