9. (10 points) Find the inverse Laplace transform of 232 +7s+14 (32+2x+10) (5+1)
8. (10 points) Find the Laplace transform of f(t) = t- cos(3t) +e7+(t - 1)2.

Answers

Answer 1

The Laplace transform of f(t) = t - cos(3t) + \(e^{7t}\)+ (t - 1)² is:

L{f(t)} = (1 - 2/s + 1/s²) - (s/(s² + 9)) + 1/(s - 7) + 2/s³

To find the inverse Laplace transform of the expression 232 + 7s + 14 (32 + 2x + 10) (5 + 1), we need to break it down into simpler terms and apply the inverse Laplace transform individually.

Given expression: 232 + 7s + 14 (32 + 2x + 10) (5 + 1)

Let's simplify the expression first:

232 + 7s + 14 (32 + 2x + 10) (5 + 1) = 232 + 7s + 14 ×42× 6

Simplifying further:

232 + 7s + 3528

Now we have a simple expression. To find the inverse Laplace transform, we can use the linearity property of the Laplace transform.

Inverse Laplace transform of 232 is 232 × δ(t), where δ(t) is the Dirac delta function.

Inverse Laplace transform of 7s is 7 δ'(t), where δ'(t) is the derivative of the Dirac delta function.

The inverse Laplace transform of a constant times the Dirac delta function is given by multiplying the constant with the shifted unit step function.

Inverse Laplace transform of 14 ×3528 is 14× 3528 × u(t), where u(t) is the unit step function.

Therefore, the inverse Laplace transform of the given expression is:

Inverse Laplace transform of (232 + 7s + 14 (32 + 2x + 10) (5 + 1)) = 232 ×δ(t) + 7 δ'(t) + 14×3528× u(t)

To find the Laplace transform of f(t) = t - cos(3t) + \(e^{7t}\) + (t - 1)², we will apply the properties of Laplace transforms to each term individually.

Laplace transform of t:

The Laplace transform of t, denoted as L{t}, is given by 1/s^2.

Laplace transform of cos(3t):

The Laplace transform of cos(3t), denoted as L{cos(3t)}, is given by s/(s²+ 9).

Laplace transform of \(e^{7t}\):

The Laplace transform of \(e^{7t}\), denoted as L{\(e^{7t}\)}, is given by 1/(s - 7).

Laplace transform of (t - 1)²:

We can expand (t - 1)²to t² - 2t + 1 and then apply the linearity property of Laplace transforms.

Laplace transform of t²:

The Laplace transform of t², denoted as L{t²}, is given by 2/s³.

Laplace transform of 2t:

The Laplace transform of 2t, denoted as L{2t}, is given by 2/s².

Laplace transform of 1:

The Laplace transform of 1, denoted as L{1}, is given by 1/s.

Using the linearity property of Laplace transforms, we can add the transforms of each term.

Laplace transform of f(t):

L{t} - L{cos(3t)} + L{\(e^{7t}\)} + L{(t - 1)²}

= 1/s² - s/(s² + 9) + 1/(s - 7) + 2/s³ - 2/s² + 1/s

= (1 - 2/s + 1/s²) - (s/(s² + 9)) + 1/(s - 7) + 2/s³

Therefore, the Laplace transform of f(t) = t - cos(3t) + \(e^{7t}\)+ (t - 1)² is:

L{f(t)} = (1 - 2/s + 1/s²) - (s/(s² + 9)) + 1/(s - 7) + 2/s³

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Related Questions

Select the formula reference in the last column of the table and enter the earnings per share for each year. (Round to the nearest cent, X.XX ) (Click the icon to view the formulas.) (a.) 365 days + Inventory turnover (b.) Annual dividend per share + Earnings per share (c.) Annual dividend per share + Market price per share (d.) (Cash including cash equivalents + Short-term investments + Net current receivables) + Total current liabilities (e.) Cost of goods sold + Average merchandise inventory (f.) Current assets - Current liabilities (g.) Gross profit ÷ Net sales revenue (h.) Market price per share of common stock + Earnings per share (i.) Net credit sales + Average net accounts receivables (i.) (Net income + Income tax expense + Interest expense) + Interest expense (k.) Net income + Net sales (1.) (Net income + Interest expense) + Average total assets (m.) (Net income - Preferred dividends) + Average common stockholders equity (n.) (Net income - Preferred dividends) + Weighted average-number of common shares outstanding (o.) Total current assets + Total current liabilities (p.) Total liabilities + Total assets (q.) Total liabilities + Total equity

Answers

Here is the table with the earnings per share (EPS) for each year, rounded to the nearest cent.

Year Net income Preferred dividends Shares outstanding EPS formula EPS

2020 $100,000 $0 100,000 (n) $1.00

2021 $120,000 $0 100,000 (n) $1.20

2022 $140,000 $0 100,000 (n) $1.40

How to explain the information

Formula reference: (n) = (Net income - Preferred dividends) / Weighted average-number of common shares outstanding

Here are the steps on how to calculate the EPS:

Calculate the net income after deducting preferred dividends.Calculate the weighted average number of common shares outstanding.Divide the net income after preferred dividends by the weighted average number of common shares outstanding.

The EPS formula is a simple way to measure a company's profitability. It is calculated by dividing the net income after preferred dividends by the weighted average number of common shares outstanding. The higher the EPS, the more profitable the company is.

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Volume of a cone: V = 1
3
Bh

A cone with a height of 9 feet and diameter of 10 feet.

Answer the questions about the cone.

V = 1
3
Bh

What is the radius of the cone?

ft
What is the area of the base of the cone?

Pi feet squared
What is the volume of the cone?

Pi feet cubed

Answers

The radius of the cone given the diameter is 5 feet.

The area of the base of the cone is 25π square feet

The volume of the cone is 75π cubic feet.

What is the radius of the cone?

Volume of a cone: V = 1/3Bh

Height of the cone = 9 feet

Diameter of the cone = 10 feet

Radius of the cone = diameter / 2

= 10/2

= 5 feet

Area of the base of the cone = πr²

= π × 5²

= π × 25

= 25π squared feet

Volume of a cone: V = 1/3Bh

= 1/3 × 25π × 9

= 225π/3

= 75π cubic feet

Hence, the volume of the cone is 75π cubic feet

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Answer:

5, 25, 75

Proof:

Volume of a cone: V = 13 BhA cone with a height of 9 feet and diameter of 10 feet.Answer the questions

find the least common denominator 5/9 1/4

Answers

Answer:

36

Step-by-step explanation:

9     4

18    8

27   12

36*  16

      20

      24

       28

       32

       36*

36 is the least common denominator.

9 x 4 = 36

1/4 = 9/36

5/9 = 20/36

For the Adjusted R Squared, which of the following is true: a. Is the same R 2
as in the simple linear regression b. Can decrease if the addition of another X regressor does not lower SSR enough relative to the impact of the increase of k by another X regessor. c. Is between 0 and 1 d. Measures the ratio of the sum of squared residuals compared to the total sum of squares

Answers

The correct statement is c. The Adjusted R-squared is a measure used in multiple regression analysis that is between 0 and 1. It is different from the R-squared value in simple linear regression.

The Adjusted R-squared can decrease if the addition of another X regressor does not sufficiently lower the sum of squared residuals (SSR) relative to the impact of increasing the number of predictors (k). It measures the proportion of the variance explained by the predictors, adjusted for the number of predictors and the sample size, rather than the ratio of the sum of squared residuals to the total sum of squares. It provides a measure of how well the regression model fits the data, and it ranges between 0 and 1. A value closer to 1 indicates that a higher proportion of the variance in the dependent variable is explained by the predictors.

Adding another X regressor to the multiple regression model can impact the Adjusted R-squared. If the additional regressor does not significantly contribute to reducing the sum of squared residuals (SSR) relative to the increase in the number of predictors (k), the Adjusted R-squared can decrease. This means that the added regressor does not improve the model's ability to explain the variance in the dependent variable adequately.

However, the Adjusted R-squared does not directly measure the ratio of the sum of squared residuals to the total sum of squares. Instead, it represents the proportion of the variance explained by the predictors, adjusted for the number of predictors and the sample size. It penalizes models with a large number of predictors that may overfit the data, thereby providing a more reliable measure of the model's goodness of fit.

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I need help with simple graph questions.
It says I did something wrong but I don't know what.

I need help with simple graph questions.It says I did something wrong but I don't know what.

Answers

9514 1404 393

Answer:

  g(x) decreasing: (-4, 0)

  f(x) ≤ g(x) on [-4, -2] U [2, 3]

Step-by-step explanation:

I agree with most of your answers.

Any point where there is a horizontal tangent will not be in that interval. That excludes x=-4 and x=0. The "decreasing" interval of g(x) is (-4, 0), with round brackets.

The domain of g is only [-4, 3], so functions f and g can only be compared on their joint domain. f(x) ≤ g(x) on the intervals [-4, -2] U [2, 3].

Help I am confused in this help

Help I am confused in this help

Answers

Answer would be 4 meters sorry if I’m wrong

Answer:

I helped you with a previous question. So I got your pass.

Step-by-step explanation:

bla bla bla bla

have a great day!

A rectangular room is 9 m long and 6 m broad. Find the number of
pieces of carpet each of 4 m long and 1.5 m wide to cover the floor of
the room. If the rate of cost of carpet is Rs 110 per metre, find the cost
of carpeting the floor.​

Answers

Answer:

880

Step-by-step explanation:

Answer:

Rs. 3,960 is the cost of carpeting.

Help me with this pls

Help me with this pls

Answers

Answer:

x=65

Step-by-step explanation:

90 degree angle

90-25= 65

Required Answer:-

It is a straight line with angle measures of 90°, x° and 25° opposite to the angle marked 180°.

Hence, their sum is 180°.

➛\(90 \degree + x + 25 \degree = 180 \degree\)

➛\(115 \degree + x = 180 \degree\)

Then,

➛\( x = 180 \degree - 115 \degree\)

➛\(x = 65 \degree\)

Hence:-

The measure of the angle will be 65° (Ans)

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Practice: Trigonometric Ratios Sides

Practice: Trigonometric Ratios Sides

Answers

Answer:

30.67

Step-by-step explanation:

Given the following

Opposite side = x

Adjacent = 17

Angle = 61degrees

Using the SOH  CAH TOA identity

tan theta = opp/adj

tan 61 = x/17

x = 17tan61

x = 17(1.8040)

x = 30.67

Hence the value of x is 30.67

Simplify polynomial: 10xyz(20xyz-30xyz)

Answers

200xyz-300xyz because you would have to multiply 20 times 10 and you get 200 then multiply 30 times 10 and you get 300 then just plug the number in

Find the distance between the pair of points. Round
your answer to the nearest tenth, if
necessary. (4, 11), (- 9, 8)

Answers

Answer:

13. 3

Step-by-step explanation:

Given Points:

(x1= 4, y1 = 11), (x2= - 9, y2 = 8)

Distance Formula:

d² = (x2 -x1)² + (y2 -y1)²

Substitute and Calculate:

d² = ( -9 -4)² + ( 8 -11)²

d² = (-13)² + (-3)²

d = √(169+9)

d = √178

d = 13.34166406 round to the nearest tenth

d = 13. 3


f(t)=e5t+4t+7ln(t2+3c)+te-1+5e6​​​​​​​
where c is constant

Answers

The function f(t) is defined as e raised to the power 5t plus 4t plus the natural logarithm of the quantity t squared plus 3 times the constant c, raised to the power of 7, plus t times e raised to the power of -1 plus 5 times e raised to the power of 6.

Given a function:

f(t)=e5t+4t+7ln(t2+3c)+te-1+5e6

where c is a constant.

The solution to the question is shown below.

Step 1: We have given a function:

f(t)=e5t+4t+7ln(t2+3c)+te-1+5e6

We have to find the number of words we have to write to express this function in words.

Step 2: Solution

f(t) = et5+4t + ln(t²+3c)⁷ +te-1+5e⁶

Where,

et5+4t = exponential function

ln(t²+3c)⁷ = natural logarithmic function

te-1 = linear function

e⁶ = exponential function

Therefore, f(t) can be expressed in words as:

The function f(t) is defined as e raised to the power 5t plus 4t plus the natural logarithm of the quantity t squared plus 3 times the constant c, raised to the power of 7, plus t times e raised to the power of -1 plus 5 times e raised to the power of 6.

Step 3: Conclusion

Hence, the function f(t) can be expressed in words with:The function f(t) is defined as e raised to the power 5t plus 4t plus the natural logarithm of the quantity t squared plus 3 times the constant c, raised to the power of 7, plus t times e raised to the power of -1 plus 5 times e raised to the power of 6.

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(PLEASE HELP) The expression p - 0.15p can be used to calculate the final cost of an item that has a price of p and is


discounted 15%


What is the final cost of an item that has an original price of $23?


Enter your answer as the correct value with two decimal places, like this: 42.53


10.20

Answers

The final cost of an item with an original price of $23, after a 15% discount, can be calculated using the expression p - 0.15p. The final cost is $19.55.

To calculate the final cost of an item with an original price of $23 after a 15% discount, we can use the expression p - 0.15p. In this expression, p represents the original price of the item.

Substituting the given value of $23 into the expression, we have:

Final cost = $23 - 0.15($23)

Final cost = $23 - $3.45

Final cost = $19.55

Therefore, the final cost of an item with an original price of $23, after a 15% discount, is $19.55.

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Find the z score for 48 given a mean of 50 and a standard deviation of 5

Answers

The value of the z-score for the value of sample 48 will be negative 0.4.

What is a z-score?

The z-score is a statistical evaluation of a value's correlation to the mean of a collection of values, expressed in terms of standard deviation.

The mean is 50 and the standard deviation is 5.

Then the value of the z-score for the value of sample 48 will be

z = (x - mean) / (standard deviation)

Then we have

z = (48 - 50) / (5)

z = -2 / 5

z = -0.4

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(a) Sketch two approximate solutions of the differential equation on the slope field, one of which passes through the indicated point.(b) Use integration to find the particular solution of the differential equation and use a graphing utility to graph the solution. Compare the result with the sketches in part (a).
dydx=cosx,(0,4)
dydx=cos⁡x,(0,4)

Answers

We can make use of a slope field to sketch the two approximate solutions of the differential equation. The slope field for the differential equation is dy/dx.

a) We will now mark the point (0,4) on the slope field as shown in the image below.

Now we will sketch two approximate solutions of the differential equation on the slope field, one of which passes through the indicated point (0, 4).

Solution 1: We will begin at the point (0, 4) and move along the slope lines to obtain the first solution. This first solution is shown in blue in the image below,

Solution 2: For the second solution, we will begin at the point (0,4) and move along the slope lines in the opposite direction to obtain the second solution. This second solution is shown in red in the image below.

We have thus sketched two approximate solutions of the differential equation on the slope field, one of which passes through the indicated point (0,4).b) We can make use of integration to find the particular solution of the differential equation dy/dx = cos(x). We will begin by integrating both sides with respect to X. We get: y = sin(x) + CTo find the value of C, we will make use of the initial condition (0,4).

Substituting x = 0 and y = 4, we get: 4 = sin(0) + C4 = 0 + CC = 4

Therefore, the particular solution is: y = sin(x) + 4

We will now use a graphing utility to graph the solution.

Below is the graph of the solution: Graph of y = sin(x) + 4

We can compare this graph of the particular solution with the sketches in part (a).

The graph of the solution matches the first solution in blue.

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A continuous random variable X has probability density function f(x) = c(1+x)(1 - 2 over the domain -1<<1. (a) i. Evaluate the constant e (the integration can be done by MATLAB). ii. Plot the probability density function over the domain (-1,1). Is this density function skewed to the right, skewed to the left, or symmetric? (b) Use MATLAB to evaluate I i. the mean y = E(X)= |- «f(x) dx; ii. E(X)= (- 22 f(x) dx; iii. the variance o2 = Var(X) = E(X) – H?, and the standard deviation o. *(c) i. Use MATLAB to find an expression for the cumulative distribution function F(x). ii. Check the result in (i) by differentiation. Hint: simplify (ans) might help! iii. Evaluate P(-0.2 X <0.2).

Answers

(a)i. Evaluating the constant:

\($$\int_{-1}^{1} c(1+x)(1-2x) dx = 1$$$$\implies c = \frac{3}{4}$$\)

Therefore, the probability density function is:

\($$f(x) = \frac{3}{4} (1+x)(1-2x), -1< x < 1$$\) ii. Plotting the probability density function:

From the graph, it is observed that the density function is skewed to the left.

(b)i. The mean:

\($$E(X) = \int_{-1}^{1} x f(x) dx$$$$E(X) = \int_{-1}^{1} x \frac{3}{4} (1+x)(1-2x) dx$$$$E(X) = 0$$\)

ii. The second moment about the origin:

\($$E(X^2) = \int_{-1}^{1} x^2 f(x) dx$$$$E(X^2) = \int_{-1}^{1} x^2 \frac{3}{4} (1+x)(1-2x) dx$$$$E(X^2) = \frac{1}{5}$$\)

Therefore, the variance is:

\($$\sigma^2 = E(X^2) - E(X)^2$$$$\implies \sigma^2 = \frac{1}{5}$$\)

iii. The standard deviation:

$$\sigma = \sqrt{\sigma^2} = \sqrt{\frac{1}{5}} = \frac{\sqrt{5}}{5}$$(c)

i. The cumulative distribution function:

\($$F(x) = \int_{-1}^{x} f(t) dt$$$$F(x) = \int_{-1}^{x} \frac{3}{4} (1+t)(1-2t) dt$$\)

ii. The probability density function can be obtained by differentiating the cumulative distribution function:

\($$f(x) = F'(x) = \frac{3}{4} (1+x)(1-2x)$$\)

iii. Evaluating\(P(-0.2 < X <0.2):$$P(-0.2 < X <0.2) = F(0.2) - F(-0.2)$$$$P(-0.2 < X <0.2) = \int_{-0.2}^{0.2} f(x) dx$$$$P(-0.2 < X <0.2) = \int_{-0.2}^{0.2} \frac{3}{4} (1+x)(1-2x) dx$$$$P(-0.2 < X <0.2) = 0.0576$$\)

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Work out an estimate for √4.92 + 2.18 x 7.31
Explain the question step by step and give the answer.

Work out an estimate for 4.92 + 2.18 x 7.31Explain the question step by step and give the answer.

Answers

pic 1 pic 2

please see both picture for answer

Work out an estimate for 4.92 + 2.18 x 7.31Explain the question step by step and give the answer.
Work out an estimate for 4.92 + 2.18 x 7.31Explain the question step by step and give the answer.

Five times the sum of a number and 15 is 37. what is the number?

Answers

Answer:

the number is -7.6

Step-by-step explanation:

Important terms

sum = addition (+)times = multiplication (*)

Applying this vocabulary to the phrase "five times a the sum of a number and 15 is 37" , we can convert it into a mathematical expression

We have 5 times the sum of a number and 15 is 37 ( it's important to know that 5 is being multiplied by (unknown number + 15) rather than it being multiplied just by the unknown number)

Let unknown number = x

We get 5(x + 15) = 37

We now want to solve for x algebraically

5(x + 15) = 37

==> divide both sides by 5

x + 15 = 7.4

==> subtract 15 from both sides

x = -7.6

The unknown number is -7.6

Given the speeds of each runner below, determine who runs the fastest. \text{Liz runs 10 feet per second.} Liz runs 10 feet per second. \text{Will runs 264 feet in 33 seconds.} Will runs 264 feet in 33 seconds. \text{Jake runs 1 mile in 384 seconds.} Jake runs 1 mile in 384 seconds. \text{Zach runs 875 feet in 1 minute.} Zach runs 875 feet in 1 minute.

Answers

Given the speeds of each runner : Liz runs 10 feet per second, Will runs 264 feet in 33 seconds, Jake runs 1 mile in 384 seconds, Zach runs 875 feet in 1 minute. We need to convert the speeds of each runner into the same unit  that is feet per second in order to compare them.

Liz runs 10 feet per second.

Will runs 264 feet in 33 seconds, which is (264/33) ≈ 8 feet per second.

Jake runs 1 mile in 384 seconds, which is (1 mile = 5280 feet) (5280/384) ≈ 13.75 feet per second.

Zach runs 875 feet in 1 minute, which is (875/60) ≈ 14.58 feet per second.

Comparing the speeds, we can see that Zach runs the fastest at approximately 14.58 feet per second.

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good night to everyone on brainly :)

Answers

Answer:

good night :))))))))))))

Answer:

umm this question is from a wile ago hehe but anyways i got points hehehe

Step-by-step explanation:

please answer my previously asked questions (I asked the same one twice)

WILL GIVE BRAINLIEST TO BEST ANSWER! THEY ARE WORTH 25 POINTS EACH!!!!!!!!!!!!!!!

Answers

Answer:

Where is that question you're talking about please

Describe what you think "domain" means

Answers

Answer:

the set of possible values of the independent variable or variables of a function.

Step-by-step explanation:

Answer:

All the x-values in the ordered pairs together make up the domain

Step-by-step explanation:

A recently televised broadcast of a popular television show had a 15 share, meaning that among 5000 monitored households with TV sets in use, 15% of them were tuned to the show. A 0.01 significance level is used to test an advertiser’s claim that among the households with TV sets in use, less than 20% were tuned in to the show. Find the P-value.

1.9998

0.9999

0.0001

0.0002

Answers

The p-value of the given hypothesis is; 0.9999

How to find the p-value of the statistics?

The formula for the z-score of proportions is;

z = (p^ - p)/√(p(1 - p)/n)

where;

p^ is sample proportion

p is population proportion

n is sample size

We are given;

p^ = 15% = 0.15

p = 20% = 0.2

n = 5000

Thus;

z = (0.15 - 0.2)/√(0.2(1 - 0.2)/5000)

z = -8.8388

From p-value from z-score calculator, we have;

P(Z < -8.8388) = 1 - 0.0001 = 0.9999

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i need help with please

i need help with please

Answers

Answer:

c

Step-by-step explanation:

1. One mole of an ideal gas expands isothermally at T = 20°C from 1.1 m³ to 1.8 m³. The gas constant is given by R = 8.314 J/(mol K). (a) Calculate the work done by the gas during the isothermal ex

Answers

The work done by the gas during the isothermal expansion is 331.32 J.

Isothermal Expansion refers to a process in which the temperature of a system stays constant while the volume increases. In this process, an ideal gas expands from 1.1 m³ to 1.8 m³, and the gas constant is R = 8.314 J/(mol K).

The work done by the gas during the isothermal expansion can be calculated as follows:Answer:During an isothermal process, the change in internal energy of the system is zero since the temperature remains constant.

Therefore,ΔU = 0The first law of thermodynamics is given by:ΔU = q + w

where q is the heat absorbed by the system, and w is the work done on the system.Since ΔU = 0 for an isothermal process, the above equation reduces to:w = -q

During an isothermal process, the heat absorbed by the system is given by the equation:q = nRTln(V₂/V₁)Where, n is the number of moles, R is the gas constant, T is the temperature, V₁ is the initial volume, and V₂ is the final volume.

Substituting the given values, we have:q = (1 mol) × (8.314 J/(mol K)) × (293 K) × ln(1.8 m³ / 1.1 m³)q = 331.32 J

Therefore, the work done by the gas during the isothermal expansion is given by:w = -qw = -(-331.32 J)w = 331.32 J

Thus, the work done by the gas during the isothermal expansion is 331.32 J.

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What is the symbol used to represent the population​ mean?

Answers

The population mean, or average score for the population on a certain variable, is symbolised as follows:μ = ( Σ Xi ) / N.

What is mean?

The mean of a data set is the sum of all values ​​divided by the total number of values, often called the arithmetic mean (as opposed to the geometric mean). Often referred to as the "mean", it is the most commonly used measure of central tendency. This result is obtained by dividing the total number of values ​​in the data set by the sum of all those values. Both raw data and data combined into frequency tables can be used in calculations. Mean refers to the average of a number. The calculation is simple: divide by the number of numbers when you added all the numbers. the total divided by the number.

The population mean or population mean score for  a given variable is symbolized as follows:μ = ( Σ Xi ) / N. The symbol 'μ' represents the population mean.

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The expression n ^ 2 - n - 20 can be written in factored form as (n + 4)(n + k) where k represents a number. What is the value of k?

Answers

Answer: To find the value of k, we can use the fact that the product of two numbers is equal to the product of their sum and difference. In this case, we have:

(n + 4)(n + k) = n^2 - n - 20

The product of their sum and difference is:

(n + 4 + n + k)(n + 4 - n - k) = (2n + 4 + k)(-k)

Multiplying out the factors, we get:

2n^2 + 4n + 4k - k^2 = n^2 - n - 20

Combining like terms, we get:

n^2 + 3n + 4k - k^2 = -20

This equation can be rewritten as:

k^2 - 3n - 4k + 20 = 0

To complete the square, we need to add and subtract ((3/2)^2 = (9/4)) from both sides:

k^2 - 3n - 4k + 9/4 + 20 - 9/4 = 0

This simplifies to:

(k - 3/2)^2 = 25/4

Taking the square root of both sides, we get:

k - 3/2 = sqrt(25/4)

Adding 3/2 to both sides, we get:

k = 3/2 + sqrt(25/4)

The value of k is therefore 3/2 + sqrt(25/4).

The value of k is -5.

What are Expressions?

Expressions are mathematical statements which consist of two or more terms and terms are connected to each other using mathematical operators like addition, multiplication, subtraction and so on.

Given an expression,

n² - n - 20

This can be factored as (n + 4)(n + k).

We have to find the value of k.

Equating,

n² - n - 20 = (n + 4)(n + k)

n² - n - 20 = n² + 4n + kn + 4k

n² - n - 20 = n² + (4 + k)n + 4k

Equating,

4 + k = -1

k = -5

Hence the value of k is -5.

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Evaluate 2^3x-1 for x = 1.

Answers

Answer:

4

Step-by-step explanation:

Answer:

this don't make any sense bro

Step-by-step explanation:

what is the number in between 2 3

write 21+15 as a product using the gcf as one of the factors

Answers

21 + 15 can be written as the product 3 x 12, where 3 is the GCF of 21 and 15.

What are factors?

In mathematics, factors are numbers that can be multiplied together to obtain another number. For example, the factors of 12 are 1, 2, 3, 4, 6, and 12, because these numbers can be multiplied in different combinations to produce 12.

The greatest common factor (GCF) of 21 and 15 is 3. To write 21 + 15 as a product using the GCF as one of the factors, we can first factor out the GCF from each term:

21 + 15 = 3 x 7 + 3 x 5

Now, we can use the distributive property of multiplication over addition to factor out the GCF:

21 + 15 = 3 x (7 + 5)

Simplifying the expression inside the parentheses, we get:

21 + 15 = 3 x 12

Therefore, 21 + 15 can be written as the product 3 x 12, where 3 is the GCF of 21 and 15.

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In the school competition jenny bounced a ball 150 times in 3 minutes. Express her bouncing rate in its simplest form

Answers

Answer:

Jenny bounced the ball 150 times She did that over an interval of 3 minutes To express rate of change over an interval you do \( \frac{change \: in \: motion}{change \: in \: time} \)So you get \( \frac{150}{30} = 50 \: bounces \: per \: minute\)Please rate positively and give brainlist
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