12. 8 points Let 2 1 A:= 1 2 1 1 and b:= [ 2 0 -3 Find (a) all the least squares solutions of the linear system Ax = b; == (b) the orthogonal projection projcol(A) b of b onto col(A); (c) the least squares error || b – projcol(A) b ||.

Answer:

∠9 and ∠11

Step-by-step explanation:

Vertical angles are congruent, and angles 9 and 11 are vertical.

Step-by-step explanation:

f + 8 > g this can be written in other ways but this sums it up

Answer:

5,4,3,2,1

Step-by-step explanation:

Answer:

∠EDC and ∠FDB    

Step-by-step explanation:

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Probit coefficients are typically estimated using:

A. the method of maximum likelihood.

The method of maximum likelihood is used to estimate the probit coefficients. This method aims to find the coefficients that maximize the likelihood of observing the given sample data. It involves an iterative process to identify the most likely parameter values for the model, making it suitable for nonlinear models like the probit model. Maximum likelihood estimation is a widely used method in econometric analysis due to its desirable properties, such as consistency and asymptotic efficiency.

In summary, probit coefficients are estimated using the method of maximum likelihood, which provides the most accurate and efficient estimates for this type of model.

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Answer:

Step-by-step explanation:

First

Answer:

t>-3 is the answer. hope this helped!

Step-by-step explanation:

Its simple you add 4 to both sides. t-4+4 > -7+4= t > -3

The given subset satisfies all three conditions of a subspace, we can conclude that it is a subspace of ℙ2.

To prove this, we need to show that the set satisfies the three conditions of a subspace: closure under addition, closure under scalar multiplication, and contains the zero vector.

Let p(t) and q(t) be two polynomials of the form \(p(t) = at²\)and \(q(t) = bt²\), where a and b are real numbers. Then, the sum of these two polynomials is:

\(p(t) + q(t) = at² + bt²\)

\(= (a+b)t²\)

Since a+b is a real number, the sum of p(t) and q(t) is still of the form at² and thus belongs to the given set. Therefore, the set is closed under addition.

Now, let p(t) be a polynomial of the form \(p(t) = at²\) and c be a real number. Then, the scalar multiple of p(t) by c is:

\(c p(t) = c(at²) = (ca)t²\)

Since ca is a real number, the scalar multiple of p(t) by c is still of the form at² and thus belongs to the given set. Therefore, the set is closed under scalar multiplication.

Finally, the zero vector is the polynomial of the form \(p(t) = 0t² = 0\), which clearly belongs to the given set. Therefore, the set contains the zero vector.

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Because the general expression for a quadratic equation is

Answer:

1. y=4x-5  2. y=5x+3  3. y=-2x-8  4. 2/3x+2  5. y=-3/4x-2  6. 1/4x+7  7. -3x+2/3  8. 2/3x+10  9. -2x-1/2  10. -3/4x-3

Step-by-step explanation:

the slope always goes in front of the x and then the y-intercept goes after.

An error from the bank would be a reason  financial institutions offer cash loans to people that did not apply for it

Banks and other financial institutions may offer cash loans to people who did not apply for them for a variety of reasons, but it is important to note that this practice is generally not common or accepted.

One possibility is that the financial institution may have made an error or mistake, such as sending loan offer letters or pre-approved offers to the wrong people. In some cases, this can be due to data entry errors, incorrect addresses, or other administrative issues.

Another possibility is that the financial institution may be engaging in predatory lending practices, where they target vulnerable or low-income individuals with high-interest loans or other financial products. This can be unethical

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As per the standard deviation the proportion of observations is in the interval between each pair of values is 190 and 310

The term in math known as standard deviation is defined as a measure of how dispersed the data is in relation to the mean.

Here we have know that the mean of a population is 250 and its standard deviation is 20.

Then the proportion of observations is in the interval between each pair of values is calculated as,

We have interval (190,310) and we can express this interval as:

=> (190,310) = (250−3⋅20, 250+3⋅20)

According to this interval , we have that k=3.

Based on the value of the constant the required percent of observations in interval(190,310) is at least 88.9%

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Answer:

108

Step-by-step explanation:

Answer:108

Step-by-step:180/100×6=180080180×6=

Answer:

Sum of all the exterior angles in any polygon is always 360º

Find the number of sides:

One exterior angles = 20º

Number of sides = 360 ÷ 20

Number of sides = 18

Step-by-step explanation:

Answer:

Step-by-step explanation:

a) external angles is also known as exterior angles

exterior angle = 360

we have n=20

360/n=360/20=18

the external angles of a regular polygon of 20 is 18 degree

b) internal angles is also known as interior angles

interior angle = 180

exterior angle = 18

interior angle - exterior angle

180-18=162 degree

the internal angles of 20 is 162 degree

The sum of the residuals and what it tells us about the line of best fit is that: −1.06; This indicates that the line of best fit is not very accurate and is not a good model for prediction.

Mathematically, the residual value of a data set can be calculated by using this formula:

Residual value = actual value - predicted value

Next, we would determine the predicted values as follows:

At point (4, 6), we have;

Predicted value, y = 1.46x − 0.76.

Predicted value, y = 1.46(4) − 0.76.

Predicted value, y = 5.08

At point (6, 7), we have;

Predicted value, y = 1.46x − 0.76.

Predicted value, y = 1.46(6) − 0.76.

Predicted value, y = 8.

At point (7, 8), we have;

Predicted value, y = 1.46x − 0.76.

Predicted value, y = 1.46(7) − 0.76.

Predicted value, y = 9.46.

At point (9, 13), we have;

Predicted value, y = 1.46x − 0.76.

Predicted value, y = 1.46(9) − 0.76.

Predicted value, y = 12.38.

At point (10, 14), we have;

Predicted value, y = 1.46x − 0.76.

Predicted value, y = 1.46(10) − 0.76.

Predicted value, y = 13.84

At point (11, 15), we have;

Predicted value, y = 1.46x − 0.76.

Predicted value, y = 1.46(11) − 0.76.

Predicted value, y = 15.3.

Now, we can calculate the sum of the residuals as follows:

Sum of the residuals = Sum of actual values - Sum of predicted values

Sum of the residuals = (6 + 7 + 8 + 13 + 14 + 15) - (5.08 + 8 + 9.46 + 12.38 + 13.84 + 15.3)

Sum of the residuals = 63 - 64.06

Sum of the residuals = -1.06.

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Answer:

-1.06

Step-by-step explanation:

i took the test :)

Answer:

hope this helps

Step-by-step explanation:

Hope this helps!

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Have a great day!

Answer:

100%

Step-by-step explanation:

If all 32 the beads were plastic it would be 100%

An expression which can be used to determine the slope of the line include the following: A. \(\frac{-1 - 4}{3-2}\)

In Mathematics and Geometry, the slope of any straight line can be determined by using the following mathematical equation;

Slope (m) = (Change in y-axis, Δy)/(Change in x-axis, Δx)

Slope (m) = rise/run

Slope (m) = (y₂ - y₁)/(x₂ - x₁)

By substituting the given data points into the formula for the slope of a line, we have the following;

Slope (m) = (y₂ - y₁)/(x₂ - x₁)

Slope (m) = (-1 - 4)/(3 - 2) ⇒ (required expression).

Slope (m) = -5/1

Slope (m) = -5.

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Complete Question:

The graph of a line passes through the two points below.

(2, 4); (3,-1)

Which of these can be used to determine the slope of the line?

A. \(\frac{-1 - 4}{3-2}\)

B. \(\frac{-1 + 4}{3+2}\)

C. \(\frac{4 - 1}{3-2}\)

D. \(\frac{-1 - 3}{4-2}\)

L < 1, the series is convergent according to the ratio test. The ratio test to determine if the given series is convergent or divergent.

The series we're analyzing is Σ(n^4)/(n^n) from n=1 to infinity. To use the ratio test, we need to evaluate the limit L as n approaches infinity for the absolute value of (a_(n+1))/a_n: L = lim (n→∞) |(a_(n+1))/a_n| = lim (n→∞) |((n+1)^4)/(n+1)^(n+1)) * (n^n)/(n^4)|

Now, we can simplify the expression: L = lim (n→∞) |(n^n * (n+1)^4) / (n^4 * (n+1)^(n+1))|
Notice that we can cancel out some terms: L = lim (n→∞) |((n+1)^4) / (n+1)^(n+1) * (n^n)/(n^4)|
Now, let's divide (n+1)^4 by (n+1)^(n+1): L = lim (n→∞) |(1 / (n+1)^n) * (n^n)/(n^4)|
Now, let's evaluate the limit: L = |(1 / (∞)^n) * (∞^n)/(∞^4)| = 0

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Answer:

Its 25%

Step-by-step explanation:

The percent population that will grow in a decade is 28% option (3) 28% is correct.

It is defined as the function that rapidly increases and the value of the exponential function is always positive. It denotes with exponent y = a^x

where a is a constant and a>1

We have:

\(\rm P(t) = 2,500(1.025)^t\)

Plug t = 10

\(\rm P(10) = 2,500(1.025)^{10}\)

P(10) = 3200

Percent grow = [(3200 - 2500)/2500]×100

Percent grow = 28%

Thus, the percent population that will grow in a decade is 28% option (3) 28% is correct.

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The variety of nonrandom sampling that takes proportions into consideration is: c) quota

Quota sampling is the variety of nonrandom sampling that takes proportions into consideration. In quota sampling, the researcher selects a specific number of participants from each subgroup of the population based on their proportion in the overall population. This ensures that the sample represents the different subgroups in the population proportionately.

In quota sampling, the researcher selects participants based on specific characteristics or proportions to ensure that the sample represents the target population accurately. The researcher sets quotas for different groups or segments based on known proportions or desired representation in the population.

For example, if a population consists of 60% males and 40% females, a quota sample might be designed to include the same proportions of males and females. The researcher would continue to select participants from each group until the quotas are met.

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The type of sampling used in this scenario is B. Stratified sampling. Stratified sampling involves dividing the population into distinct subgroups or strata and then selecting samples from each subgroup.

In this case, Miranda divides her day into three parts: morning, afternoon, and evening. Each part of the day represents a stratum or subgroup.  Miranda measures her breathing rate at 4 randomly selected times during each part of the day. This means she is taking samples from each of the three strata (morning, afternoon, and evening) and collecting data from within those subgroups.

By using stratified sampling, Miranda ensures that her samples represent the different parts of her day in a proportional and systematic manner, allowing her to capture potential variations in her breathing rate throughout the day.

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The value of two plums and a peanut, divided by a grape and a peanut is 11

The given parameters are:

Substitute Grape = 2  in Acorn + 3 grapes = 14

Acorn + 3 *2  = 14

Acorn + 6  = 14

Subtract 6 from both sides

Acorn  = 8

Substitute Acorn  = 8 in Acorn = 1/2 Plum

8 = 1/2 Plum

Multiply both sides by 2

Plum = 16

So, we have:

Peanut = 1

Grape = 2

Acorn  = 8

Plum = 16

The value of two plums and a peanut, divided by a grape and a peanut is:

(2 plums + peanut)/(grape + peanut)

This gives

(2 * 16 + 1)/(2+ 1)

Evaluate

11

Hence, the value of two plums and a peanut, divided by a grape and a peanut is 11

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Answer:

i think its 23. ............

Answer:

999,960

Step-by-step explanation:

let x be a multiple of 120

120x ≤ 999,999

999,999 / 120 = 8333.325

8333 ≤ x ≤ 8334

8333(120) = 999,960

8334(1200) = 1,000,080  this is a 7-digit number

Therefore, the largest 6-digit number that is exactly divisible by 120 is 999,960