please help me i need it before tomorrow if possible. i need all 4 answered

Answer:

test? is it? if it is i can't tell you

Step-by-step explanation:

The optimal values of these parameters are:

a. β₁ = 0

b. β₂ = 0

The linear regression y = β1 + β2x + e, assuming that the sum of squared errors (SSE) takes the following form:

SSE = 382 + 681 + 382 + 18β1β2

Derive the partial derivatives of SSE with respect to β1 and β2 and solve the optimal values of these parameters.

Given that SSE = 382 + 681 + 382 + 18β1β2 ∂SSE/∂β1 = 0 ∂SSE/∂β2 = 0

Now, we need to find the partial derivative of SSE with respect to β1.

∂SSE/∂β1 = 0 + 0 + 0 + 18β2 ⇒ 18β2 = 0 ⇒ β2 = 0

Therefore, we obtain the optimal value of β2 as 0.

Now, we need to find the partial derivative of SSE with respect to β2. ∂SSE/∂β2 = 0 + 0 + 0 + 18β1 ⇒ 18β1 = 0 ⇒ β1 = 0

Therefore, we obtain the optimal value of β1 as 0. Hence, the partial derivative of SSE with respect to β1 is 18β2 and the partial derivative of SSE with respect to β2 is 18β1.

Thus, the optimal values of β1 and β2 are 0 and 0, respectively.

Therefore, the answers are: a. β₁ = 0 b. β₂ = 0

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The probability of winning is 0.00078395061 or approximately 0.078%.

There are five dice, and each dice has six sides.

There are a total of 6^5 possible outcomes.

This gives us 7776 possible outcomes.

We want to find the probability that we get at least four 6s in the next round.

The probability of getting exactly four 6s can be found by using the binomial distribution, which is given by the formula:

P(4) = (5 choose 4) * (1/6)^4 * (5/6)^1

P(4) = 5 * (1/6)^4 * (5/6)^1

P(4) = 0.00077160493

The probability of getting exactly five 6s can be found in a similar way:

P(5) = (5 choose 5) * (1/6)^5 * (5/6)^0

P(5) = 1 * (1/6)^5 * (5/6)^0

P(5) = 0.00001234568

The probability of getting at least four 6s is the sum of the probabilities of getting exactly four 6s and exactly five 6s.

P(at least 4) = P(4) + P(5)

P(at least 4) = 0.00077160493 + 0.00001234568

P(at least 4) = 0.00078395061

So, the probability of winning the next round by rolling at least four number 6's is 0.00078395061. This is equivalent to approximately 0.078%. Hence, the probability of winning is 0.00078395061 or approximately 0.078% which is calculated by using binomial distribution formula.

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Answer:

It's correct.

Step-by-step explanation:

- - - - - - - - - - - - - - - - - - - -

Answer:

(4,3)

You didn't list if it was clockwise or counterclockwise, so I will just assume that you were asking for clockwise.

Step-by-step explanation:

If it is a 270 degree rotation cw, then it changes from (x,y) to (y,-x).

(-3,4) ---> (4,3)

1.  x² - 5x - 16 can be written as (x - 8)(x + 2).

2. 6an² - 3b²n² = n²(6a - 3b²).

3. This expression represents a perfect square trinomial, which can be factored as (2x - y)².

4. Combining like terms, we get -n³ - n² + n + 1 = -(n³ + n² - n - 1).

5. 17x³y⁴z⁶ = (x²y²z³)².

6. 12a²b³ = (2a)(6b³) = 12a6b³ = 12a⁷b³x⁶.

Let's simplify the given expressions:

Simplifying x² - 5x - 16:

To factorize this quadratic expression, we look for two numbers whose product is equal to -16 and whose sum is equal to -5. The numbers are -8 and 2.

Therefore, x² - 5x - 16 can be written as (x - 8)(x + 2).

Simplifying 6an² - 3b²n²:

To simplify this expression, we can factor out the common term n² from both terms:

6an² - 3b²n² = n²(6a - 3b²).

Simplifying 4x² - 4xy + y²:

This expression represents a perfect square trinomial, which can be factored as (2x - y)².

Simplifying n + 1 - n³ - n²:

Rearranging the terms, we have -n³ - n² + n + 1.

Combining like terms, we get -n³ - n² + n + 1 = -(n³ + n² - n - 1).

Simplifying 17x³y⁴z⁶:

To simplify this expression, we can divide each exponent by 2 to simplify it as much as possible:

17x³y⁴z⁶ = (x²y²z³)².

Simplifying 12a²b³:

To simplify this expression, we can multiply the exponents of a and b with the given expression:

12a²b³ = (2a)(6b³) = 12a6b³ = 12a⁷b³x⁶.

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Answer:

Not exactly sure what you mean, but you can try (7,∞)

Step-by-step explanation:

Answer:

6x - 6

Step-by-step explanation:

(2x + 6) + (4x - 12) ← remove parenthesis

= 2x + 6 + 4x - 12 ← collect like terms

= (2x + 4x) + (6 - 12)

= 6x + (- 6)

= 6x - 6

PreAlg students spend significantly less time doing homework compared to ElemAlg and InterAlg students, while there is no significant difference in homework time between ElemAlg and InterAlg students.

What is significantly ?

Significantly" is the keyword that indicates a notable or meaningful difference or result in the context of statistical analysis. It is often used to describe findings that have a high level of confidence and statistical significance, indicating that the observed difference or relationship is unlikely to have occurred by chance.

Based on the given data and statistical analysis, the conclusion is as follows:

PreAlg compared to ElemAlg:

The sample mean for PreAlg (1.32) is significantly different from the sample mean for ElemAlg (3.18) with a t-value of 5.08 and a p-value of 0.000. Therefore, we can conclude that PreAlg students spend significantly less time doing homework compared to ElemAlg students.

PreAlg compared to InterAlg:

The sample mean for PreAlg (1.32) is significantly different from the sample mean for InterAlg (4.42) with a t-value of 3.64 and a p-value of 0.003. Hence, we can conclude that PreAlg students spend significantly less time doing homework compared to InterAlg students.

ElemAlg compared to InterAlg:

The sample mean for ElemAlg (3.18) is not significantly different from the sample mean for InterAlg (4.42) with a t-value of 1.49 and a p-value of 0.163. Therefore, we fail to reject the null hypothesis, and we cannot conclude a significant difference in homework time between ElemAlg and InterAlg students.

In summary, the PreAlg students have significantly lower homework time compared to both ElemAlg and InterAlg students. However, there is no significant difference in homework time between ElemAlg and InterAlg students.

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1. n = 37

isolate n by dividing both sides by 5

2. y = 83

isolate y by dividing both sides by 3

3. w = -118

isolate w by dividing both sides by -6

Answer:

Justin could buy up to 8 cookies.

Step-by-step explanation:

7 * 1.25 = 8.75

15 - 8.75 = 6.25

6.25/.75 = 8.3333333

FALSE. Symmetric algorithms support confidentiality, but they do not inherently support authentication and non-repudiation.

Symmetric algorithms are encryption algorithms that use the same key for both encryption and decryption. Their primary purpose is to ensure confidentiality by keeping data secure from unauthorized access. However, symmetric algorithms do not provide built-in mechanisms for authentication and non-repudiation.

Authentication involves verifying the identity of a communicating party to ensure that the message comes from a trusted source. Non-repudiation, on the other hand, ensures that the sender cannot deny sending a message.

To achieve authentication and non-repudiation, additional mechanisms such as digital signatures and asymmetric encryption algorithms are typically used. Asymmetric algorithms, also known as public-key algorithms, employ a pair of keys (public and private) for encryption and decryption, enabling authentication and non-repudiation.

So, while symmetric algorithms can provide confidentiality, they do not directly support authentication and non-repudiation without the use of additional mechanisms.

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Answer:

volume of cylinder

v = πr²

v = 22/7 x 21²

v = 1385.441 cm³

Step-by-step explanation:

Answer:

A. is the answer

Sorry if i'm wrong

Answer:ITS C

Step-by-step explanation:JUST TRUST ME

Answer:

It would be a or c

Step-by-step explanation:

Here is the reason why, if you draw a table the x´s are going up 5 every time so you need to go back 5 you get x to 0 to find your y. and the y´s are going up 10 so you need to go back 10. Hope this helps :)

The amount needed in the account is 182,713.25 dollars then the correct option is B.

The term loan refers to a sort of credit vehicle in which a sum of money is lent to another party in exchange for the value or principal amount being repaid in the future.

Then the formula of monthly payment (MP) will be

\(\rm MP = P \times \dfrac{r(1+r)^n}{(1+r)^n - 1}\\\)

The formula can be written as

\(\rm P = MP \times \dfrac{(1+r)^n-1}{r(1+r)^n}\\\)

You plan on supplementing your income. you would like to withdraw a semiannual salary of $6,951.20 from an account paying 1.75% interest, compounded semiannually.

The amount needed in the account is such that you can withdraw the needed amount at the end of each period for 15 years will be

MP = $6951.20

r = 0.00875

n = 30

Then we have

\(\rm P = 6951.20 \times \dfrac{(1+0.00875)^{30}-1}{0.00875(1+0.00875)^{30}}\\\\P = \$182713.25\)

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Answer:

The answer is 0 because the minimum is 5

Step-by-step explanation:

Use the formula  

x  =  −  b /2 a

to find the maximum and minimum.

( 0 , 5 )

False. There is no strong evidence to support the claim that the temporal pattern of super-eruptions (M>8 eruptions) is random.

The statement claims that the temporal pattern of super-eruptions is random, implying that there is no specific pattern or correlation between the occurrences of these large volcanic eruptions. However, scientific studies and research suggest otherwise. While it is challenging to study and predict rare events like super-eruptions, researchers have analyzed geological records and evidence to understand the temporal patterns associated with these events.

Studies have shown that super-eruptions do not occur randomly but tend to follow certain patterns and cycles. For example, researchers have identified clusters of super-eruptions that occurred in specific geological time periods, such as the Yellowstone hotspot eruptions in the United States. These eruptions are believed to have occurred in cycles with intervals of several hundred thousand years.

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Answer:

Min:2

Q1:5

Med:7

Q3:13

Max:15

Step-by-step explanation:

Hope the picture helps. Not the best at drawing haha

Answer:

What is a polynomial?

  - In mathematics, a polynomial is an expression consisting of indeterminates and coefficients, that involves only the operations of addition, subtraction, multiplication, and non-negative integer exponentiation of variables

What is a rational function?

- In mathematics, a rational function is any function that can be defined by a rational fraction, which is an algebraic fraction such that both the numerator and the denominator are polynomials.

Are all polynomials rational functions?

.A function that cannot be written in the form of a polynomial, so no they are not all functions.

At the end of the fifth day, a bricklayer has laid 324 bricks on the job.

Multiplication is a mathematical arithmetic operation.

It is also a process of adding the same types of expression to some number of times.

Example - 2 × 3 means 2 is added three times, or 3 is added 2 times.

Given, a bricklayer lays 4 bricks on the first day on the job.

On each day thereafter, he lays three times the number of bricks he laid on the previous day.

And he continued his pattern.

Let x be the number of bricks he laid in the previous day.

Then according to the question,

The number of bricks in total is = 3x

For the second day, x =4

Number of the bricks he laid on the second day = 12

Now the x =12 for the third day.

Number of the bricks he laid on the third day = 36

Now x = 36 for the fourth day.

Number of the bricks he laid on the fourth day = 108

Now the x = 108 for the fifth day.

Number of the bricks he laid on the fifth day = 324

Therefore, 324 bricks he has laid at the end of the fifth day.

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The unit rate for each shirt if 24 shirts cost $259.36 as required to be determined is; $10.81.

It follows from the task content that the unit rate is to be determined if 24 shirts cost $259.36.

On this note, it follows that; the unit rate is given by the quotient;

Unit rate = Total cost / No. of units

Unit rate = 259.36 / 24

Unit rate = 10.80667.

Ultimately, the unit rate of the shirts as required is; $10.81.

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Answer: \(\boxed{\frac{1}{100}\ or\ 0.01}\)

Step-by-step explanation:

Determine the value of \(y^{12} \ when\ y=10^{-\frac{1}{6}\)

\(=(10^{-\frac{1}{6} })^{12}\)

\(=\frac{1}{100}\ or\ 0.01\)

\(~\hspace{7em}\textit{negative exponents} \\\\ a^{-n} \implies \cfrac{1}{a^n} ~\hspace{4.5em} a^n\implies \cfrac{1}{a^{-n}} ~\hspace{4.5em} \cfrac{a^n}{a^m}\implies a^na^{-m}\implies a^{n-m} \\\\[-0.35em] ~\dotfill\\\\ y^{12}\hspace{5em}y=10^{-\frac{1}{6}}\qquad \implies \qquad \left( 10^{-\frac{1}{6}}\right)^{12}\implies 10^{-\frac{1}{6}\cdot 12} \\\\\\ 10^{-2}\implies \cfrac{1}{10^2}\implies \cfrac{1}{100}\)

Answer:

64 pizzas

Step-by-step explanation:

Answer:

Y=2x-11

Step-by-step explanation:

The condition for normal approximation does not meet, hence we cannot use it to construct the interval.

When you utilise a continuous distribution (the normal distribution) to approximate a discrete distribution, you are using the normal approximation to the binomial (the binomial distribution). The Central Limit Theorem states that if the sample size is high enough, the sampling distribution of the sample means approximates normality.

The total patients that were randomly assigned treatments have the proportion:

For control group:

p = 4/34= 0.12

For treatment group:

p2 = 24/69

p2 = 0.35

Here, np > 10 needs to be satisfied to use normal approximation.

However, np = (34)(0.12) = 4 . 08

The value is less than 10.

Since, the condition for normal approximation does not meet, hence we cannot use it to construct the interval.

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Answer: $2400

Step-by-step explanation:

Given

Maria got a hike of 3%.

After the hike she earns $2472 each month

Suppose, before hike she earns x each month

\(\Rightarrow x+x\times 3\%=2472\\\Rightarrow x(1+0.03)=2472\\\Rightarrow 1.03x=2472\\\Rightarrow x=\$2400\)

Thus, she earns $2400 before the hike.

Given vectors a = (1,4,-7), b = (2,-1,4), and c = (0,-9,18). We are to find the volume of the parallelepiped (box) formed by these vectors.

The volume of the parallelepiped formed by the three vectors a, b and c is given by the scalar triple product of the three vectors. That is,Volume of parallelepiped (box) = |a.(b x c)|where . and x are the dot product and cross product of the vectors, respectively and || denotes the magnitude of the vector.Thus, we havea.(b x c) = (1,4,-7) . [(2, -1, 4) x (0,-9,18)]The cross product of vectors b and c is given byb x c = [(2 x (-9) - (-1) x 0), ((4 x 0) - (-7) x (-9)), (2 x (-9) - (-1) x 18)]= (-18, 63, -36)Hence,a.(b x c) = (1,4,-7) . (-18, 63, -36)= -18 + 252 + 252= 486Therefore, the main answer is: The volume of the parallelepiped (box) formed by the given vectors a, b and c is 486 cubic units. Hence, the volume of the parallelepiped formed by the vectors a, b, and c is 486 cubic units.The explanation is:We used the formula of the scalar triple product of the vectors to find the volume of the parallelepiped formed by the vectors a, b, and c.

The volume of the parallelepiped formed by the given vectors a, b, and c is 486 cubic units.

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