If x= -2, and y=3, then what is the value of
x^3y+ xy3?

Step-by-step explanation:

you can subtract the spinner a from spinner b and then find the probability

The solutions to matrix multiplication problems using either row or column method are: First row of AB: [45, 42, 39], Third row of AB: [54, 50, 46], Second column of AB: [3, 39, -11], First column of BA: [0, 39, -6], Third row of AA: [72, 42, 72], Third column of AA: [71, 35, 51]

a) To find the first row of AB, we must use the row method. Multiplying the first row of matrix A by matrix B, we get [3(-2) + 7(0) + 6(4) + 5(9), 3(-2) + 7(1) + 6(7) + 5(5), 3(-2) + 7(3) + 6(5) + 5(0)] = [45, 42, 39]

b) To find the third row of AB, we must use the row method. Multiplying the third row of matrix A by matrix B, we get [6(-2) + 4(0) + 6(4) + 4(9), 6(-2) + 4(1) + 6(7) + 4(5), 6(-2) + 4(3) + 6(5) + 4(0)] = [54, 50, 46]

c) To find the second column of AB, we must use the column method. Multiplying the second column of matrix A by matrix B, we get [-2(0) + 4(1) + 5(3), -2(4) + 4(7) + 5(5), -2(9) + 4(5) + 5(0)] = [3, 39, -11]

d) To find the first column of BA, we must use the column method. Multiplying the first column of matrix B by matrix A, we get [0(3) + 1(-2) + 3(6) + 9(6), 0(-2) + 1(7) + 3(5) + 9(4), 0(7) + 1(-2) + 3(4) + 9(6)] = [0, 39, -6]

e) To find the third row of AA, we must use the row method. Multiplying the third row of matrix A by matrix A, we get [6(3) + 4(-2) + 6(7) + 4(6), 6(-2) + 4(7) + 6(5) + 4(4), 6(7) + 4(-2) + 6(4) + 4(6)] = [72, 42, 72]

f) To find the third column of AA, we must use the column method. Multiplying the third column of matrix A by matrix A, we get [7(3) + 7(-2) + 5(7) + 5(6), 7(-2) + 7(7) + 5(5) + 5(4), 7(7) + 7(-2) + 5(4) + 5(6)] = [71, 35, 51]

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Answer:

1,422

Step-by-step explanation:

goodluck <3

Answer: 2

Step-by-step explanation:

1) substitute

2) calculate the difference before the absolute value

3) calculate the absolute value

4) convert into whole numbers/reduce

5) subtract the whole numbers

this is what i think might be wrong

It's important to use sound statistical methods and careful analysis to ensure that the inferences drawn are as accurate as possible.

Statistical inference is the process of drawing conclusions or making predictions about a population based on data from a sample of that population. In other words, statistical inference involves using the principles of probability and statistics to make generalizations about a larger group based on information collected from a smaller group.

For example, a political survey may be conducted to gather opinions from a sample of voters about a particular issue or candidate. The data collected from this sample can be used to make inferences about the opinions of the larger population of voters. Statistical inference allows us to estimate the opinions of the larger population based on the information gathered from the smaller sample.

To illustrate this, suppose a survey is conducted on a random sample of 1000 voters in a city, and 600 of them indicate that they support a particular candidate. Based on this sample, the surveyors can use statistical inference to estimate the proportion of voters in the entire city who support that candidate. A confidence interval could be constructed to provide a range of values within which the true proportion of voters who support the candidate is likely to lie. This estimate can be used to inform political strategy and decision-making.

However, it's important to note that statistical inference is subject to certain assumptions and limitations, and there is always a degree of uncertainty associated with making predictions or generalizations based on a sample. Therefore, it's important to use sound statistical methods and careful analysis to ensure that the inferences drawn are as accurate as possible.

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Answer:

1/ We use the SSS method to prove that triangle CBD = triangle ABD

2/ We use the AA method to prove that <CBD equal < ABD

Step-by-step explanation:

1/ SSS, or side side side method, is the method we use to see if triangles are the same or not, and we know that the sides of both triangles are equal; this proves that both triangles are equal!

2/ AA, or Angle Angle method, is the method we use to see if the angles of triangles are the same or not, and we know that there are marks at <C and <A, these marks prove that both angles are equal! So, <CBD equal <ABD

Answer:

monthly cost with 20 slices:

5 + (1.75 x 20)

5+35

40

monthly cost with x slices:

1.75x + 5

Hope this helps!

The sequence whose nth term is (2n+1)/(3n-1) converges to the number 2/3.

To use L'Hopital's rule, we need to take the limit of the ratio of the nth term and (n-1)th term as n approaches infinity.

Let a_n be the nth term of the sequence. lim (n->∞) a_n / a_(n-1) = lim (n->∞) (2n+1)/(3n-1) / (2n-1)/(3n-4) = lim (n->∞) [(2n+1)/(3n-1)] * [(3n-4)/(2n-1)] = lim (n->∞) [6n^2 - 5n - 4]/[6n^2 - 7n + 4]

By applying L'Hopital's rule, we can find that the limit of this ratio as n approaches infinity is 1. Thus, the sequence converges to the same limit as the ratio of consecutive terms, which is 2/3.

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Assume \(\sf\:f : [a, b] \rightarrow \mathbb{R} \\\) is integrable. We want to show that if \(\sf\:g\) satisfies \(\sf\:g(x) = f(x) \\\) for all but a finite number of points in \(\sf\:(a, b)\), then \(\sf\:g\) is integrable as well and \(\sf\:\int_{a}^{b} g(x) \, dx = \int_{a}^{b} f(x) \, dx \\ \).

Proof:

Assume there exists a point \(\sf\:x_0\) in \(\sf\:(a, b)\) where \(\sf\:f\) and \(\sf\:g\) differ.

Since \(\sf\:f\) is integrable, by definition, for any given \(\sf\:\epsilon > 0 \\\), there exists a partition \(\sf\:P\) of \(\sf\:[a, b]\) such that the upper sum \(\sf\:U(f, P) - L(f, P) < \epsilon \\\).

Let's consider the partition \(\sf\:P\) which includes the point \(\sf\:x_0\). Without loss of generality, assume \(\sf\:x_0\) is the right endpoint of a subinterval \(\sf\:[x_i, x_{i+1}] \\\) in \(\sf\:P\).

Since \(\sf\:g(x) = f(x) \\\) for all but a finite number of points, we can select a subinterval \(\sf\:[x_i, x_{i+1}] \\\) such that \(\sf\:g(x) = f(x) \\\) for all \(\sf\:x\) in \(\sf\:[x_i, x_{i+1}] \\\)except \(\sf\:x_0\).

Now, we have:

\(\sf\:\sup_{x \in [x_i, x_{i+1}]} g(x) - \inf_{x \in [x_i, x_{i+1}]} g(x) = \sup_{x \in [x_i, x_{i+1}]} f(x) - \inf_{x \in [x_i, x_{i+1}]} f(x) \\\)

Using this, we can rewrite the upper sum and lower sum as:

\(\sf\:U(g, P) = U(f, P) + \sup_{x \in [x_i, x_{i+1}]} g(x) - \inf_{x \in [x_i, x_{i+1}]} g(x) \\\)

\(\sf\:L(g, P) = L(f, P) + \sup_{x \in [x_i, x_{i+1}]} g(x) - \inf_{x \in [x_i, x_{i+1}]} g(x) \\\)

Since \(f\) is integrable, we have \(\sf\:U(f, P) - L(f, P) < \epsilon \\\). Therefore, \(\sf\:U(g, P) - L(g, P) < \epsilon \\\) as well.

This holds for any partition \(\sf\:P\) of \(\sf\:[a, b]\). Hence, \(\sf\:g\) is integrable and \(\sf\:\int_{a}^{b} g(x) \, dx = \int_{a}^{b} f(x) \, dx \\\).

Answer:

\(f(x) = 144\)

Step-by-step explanation:

This problem deals with a function. All this question is asking is to plug in -4 every time an x appears.

So, let's do that:

\(f(-4) = 10(-4)^{2} + 3(-4) - 4\)

\(f(-4) = 10(16) - 12 - 4\)

\(f(-4) = 160 - 16\)

\(f(-4) = 144\)

Answer:

b=5

Step-by-step explanation:

-b - 19 = -3b – 9

Add 3b to each side

-b+3b - 19 = -3b+3b – 9

2b -19 = -9

Add 19 to each side

2b-19+19 = -9+19

2b = 10

Divide by 2

2b/2 =10/2

b=5

To create a scatter plot in Excel, follow these steps:
1. Enter the age data in column A and the weight data in column B.
2. Select both columns A and B.
3. Click on the 'Insert' tab and choose 'Scatter' under the 'Charts' section.
4. Select the scatter plot option without lines.

After creating the scatter plot, observe the pattern of the data points. If they show a clear upward or downward trend and are closely grouped together, it suggests linearity. If there are any data points that are far away from the general trend, these could be considered outliers.

For part 2, to find the correlation coefficient (r), you can use the provided information:
xmean = 30 years
ymean = 170 lbs
sx = 5.4 years
sy = 16.5 lbs

Use the following formula:
r = Σ[(xi - xmean)(yi - ymean)] / [(n-1) * sx * sy]

I am unable to calculate the sum in the numerator without the full data set. However, once you have that sum, you can plug in the values and find r. Round the result to the nearest 1000th.

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The statements that are True about the Correlations is , "Correlations are a measure used to determine the degree to which two variables are related" , the correct option is (c) .

In the question,

few statements about Correlation is given ,

we need to find the statement that is True .

we know that , Correlation is the term that is used to measure the degree of relationship between two variable ,

the correlation can be negative , positive or 0 ,

and the negative correlation implies that if one variable increases then other variable decreases and vice a versa .

So , from the above information about Correlation ,

we conclude that , the True statement is "Correlations are a measure used to determine the degree to which two variables are related. "

Therefore , the statement in option (c) is True  .

The given question is incomplete , the complete question is

Select the statement below that is true about correlations.

(a) Correlations can only be negative

(b) Correlations are a measure of how much one variable changes as the other variable changes

(c) Correlations are a measure used to determine the degree to which two variables are related.

(d) Correlations are a measure of causation between two variables

(e) A negative correlation implies no relationship between variables

(f) Correlations can only be positive .

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Answer:

Time = 133.3 secs

Step-by-step explanation:

Speed = Distance / Time

Rearranging the formula

Time = Distance / Speed

Where D = 200 m , S = 1.5 m/s

Time = 200 / 1.5

Time = 133.3 secs

Answer:

133.3 seconds

Step-by-step explanation:

200/1.5 = 133.3

Answer:

18,243.906

Step-by-step explanation:

divide 24325.208 by 4 which gives you, 6,081.302. we then multiply by 3

plz give brainliest

Answer:

18,243.906

Step-by-step explanation:

24325.208 / 4 = 6081.302

6081.302 x 3 =18,243.906

Answer:

C. x-2

Step-by-step explanation:

edge

Answer: the 3rd the answer c

x-2

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

i am smart

Answer:

2.635 x 10-3

Step-by-step explanation:

Since 0.0020635 has 3 zeros on the left of 2 then the power on 10 needs to be 3. AND since the zeros are in the left of 2 not right of 2, the power needs to be negative. So, 10^-3

The rate of change of the area of the square when the side length is 8 inches and the side length is increasing at a rate of 14 inches per minute is 224 square inches per minute.

To find the rate of change of the area of the square, we need to use the formula for the area of a square:

A = s^2

where A is the area of the square and s is the length of the side of the square.

To find the rate of change of the area, we need to take the derivative of this formula with respect to time:

dA/dt = 2s(ds/dt)

where dA/dt is the rate of change of the area, ds/dt is the rate of change of the side length, and s is the side length of the square.

Since the side length is increasing at a rate of 14 inches per minute, we can substitute ds/dt = 14 into the above equation, and we are given that the side length is 8 inches, so we can substitute s = 8.

dA/dt = 2s(ds/dt)

dA/dt = 2(8)(14)

dA/dt = 224

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Answer:

yeah i think so

Answer:

$11.96

Step-by-step explanation:

Now we have to,

→ find the 23% of $52.

Let's solve the problem,

→ 23% of $52

→ (52/100) × 23

→ 0.52 × 23

→ $11.96

The similar expression is,

→ 0.23 × 52

→ $11.96

Hence, answer is $11.96.

The most accurate comparison is that a gamma ray has more energy than a radio wave because it has a shorter wavelength and higher frequency.

The most energetic and high frequency particles are gamma rays. On the other side, radio waves are the EM radiation types with the lowest energies, longest wavelengths, and lowest frequencies.

All electromagnetic radiation travels in a vacuum at the speed of light (c), which is the same for all electromagnetic radiation types, including microwaves, visible light, and gamma rays.

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The number of cases per batch that should be produced to minimize cost is: 300 units

The number of cases per batch that should be produced to minimize cost can be found by using the Economic Order Quantity.

The Economic Order Quantity (EOQ) is a calculation performed by a business that represents the ideal order size that allows the business to meet demand without overspending. The inventory manager calculates her EOQ to minimize storage costs and excess inventory.  

Thus:

Number of cases per batch = √((2 * Setup costs * annual demand)/ holding costs for the year)

Solving gives:

√((2 * 30 * 15000)/10)

= √90000

= 300 units

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Answer:

the base of the ladder is 16.1 feet away from the house

so 16.1

Step-by-step explanation:

The best speed for your vehicle is most likely when you are driving at a rate of 35 mph.

Speed is the distance an object travels per unit of time. It is a scalar quantity, which means that it only has magnitude and no direction. The formula for speed is as follows:

Speed = distance/time

There are different types of speed.

In the given situation, the posted speed limit is 65 mph.

However, traffic is heavy, and vehicles are moving at 35 mph. Therefore, it is best to drive your vehicle at the same speed as the other vehicles on the road, which is 35 mph. This is the safest speed in this situation as it helps avoid accidents, saves fuel, and is the most comfortable for everyone on the road.

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A certain vine grows at a rate of three inches per day. A researcher starts observing it

when it is 27 inches long.

I

1) What is the meaning of three inches in the problem?

2) What is 27 inches represent in the problem?

3) How long will be the vine after one day?

after two days?

4) Write an algebraic expression to represent the length of the vine after n days.

ans

Answer:

Step-by-step explanation:

Given,

Perpendicular ( p ) = 3√2

Base ( b ) = 2√3

Hypotenuse ( h ) = ?

Now, let's find the length of the hypotenuse:

Using Pythagoras theorem:

\( {h}^{2} = {p}^{2} + {b}^{2} \)

plug the values

\( {h}^{2} = {(3 \sqrt{2} )}^{2} + {(2 \sqrt{3} )}^{2} \)

To raise a product to a power, raise each factor to that power

\( {h}^{2} = 9 \times 2 + 4 \times 3\)

Multiply the numbers

\( {h}^{2} = 18 + 12\)

Add the numbers

\( {h }^{2} = 30\)

Take the square root of both sides of the equation

\(h = \sqrt{30} \)

Hope this helps...

Best regards!!

\(\small\star\underline\bold\red{Given-}\)

Sides of the right triangle

\(\small\star\underline\bold\red{To\:Find-}\)

\(\small\star\underline\bold\red{Solution-}\)

By Pythagoras Theorum ,

\(\small\fcolorbox{red}{white}{h² = b² + p² }\)

\(\implies\) h² = (2√3)² + (3√2)²

\(\implies\) h² = 12 + 18

\(\implies\) h² = 30

\(\implies\) h = √30

Answer:

-1/3

Step-by-step explanation:

slope = rise/run = -1/3

The detail from “The Gold Coin” that best supports the inference that Juan is beginning to enjoy reconnecting with people is when he helps the old woman carry her basket of fruit.

Juan is a thief, and he has been for many years. He has no friends, and he doesn't care about anyone but himself. But when he sees the old woman struggling with her groceries, he stops and helps her.

This act of kindness shows that Juan is beginning to change. He is starting to care about other people, and he is starting to understand that there is more to life than just stealing. This is a significant development in Juan's character, and it suggests that he is on the road to redemption.

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Answer:

-infinity

Step-by-step explanation:

plug in numbers for x that is on the right side of the graph and you will see a trend that the larger x is the bigger y is(technically smaller because y would be negative due to the negative sign outside the square root) as x approaches inifity y approaches negative infinity.