Solve the quadratic equation given below by completing the square.
Round your answer to the nearest hundredth.
If there is more than one solution, separate them with commas.
x^2 - 2x - 12 = 0

Answer:

B

Step-by-step explanation:

The explanation is attached below.

Hari does 7,056 joules of work while dragging the load of 60 kilograms along a distance of 12 meters. The type of work performed in this scenario is mechanical work.

The amount of work done can be calculated using the formula:

Work = Force × Distance × cos(θ)

In this case, the force applied by Hari is equal to the weight of the load, which can be calculated using the equation:

Force = Mass × Acceleration due to gravity

Given that the mass of the load is 60 kilograms and the acceleration due to gravity is approximately 9.8 m/s², the force can be calculated as:

Force = 60 kg × 9.8 m/s² = 588 N

Since the force and distance are in the same direction, the angle (θ) between them is 0°, and therefore the cosine of 0° is 1.

Plugging in the values into the work formula:

Work = 588 N × 12 m × cos(0°)

    = 588 N × 12 m × 1

    = 7,056 N·m (joules)

Hence, Hari does 7,056 joules of work while dragging the load. This work is categorized as mechanical work since it involves the application of a force to move an object along a distance.

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The dividend in 2018 was $2.95, and it is expected to grow at a rate of 7.4% for the next five years and 2.6% thereafter. With an equity cost of capital of 8.6%, the value per share at the end of 2018 can be calculated.

To calculate the value per share at the end of 2018, we need to discount the expected future dividends using the dividend-discount model. The model assumes that the value of a stock is equal to the present value of all its expected future dividends.

First, we need to calculate the dividends for each year from 2019 to 2023. We start with the dividend in 2018, which was $2.95. We then increase it by 7.4% each year for the next five years:

Dividend in 2019 = $2.95 * (1 + 7.4%) = $3.17

Dividend in 2020 = $3.17 * (1 + 7.4%) = $3.40

Dividend in 2021 = $3.40 * (1 + 7.4%) = $3.65

Dividend in 2022 = $3.65 * (1 + 7.4%) = $3.92

Dividend in 2023 = $3.92 * (1 + 7.4%) = $4.22

After 2023, the dividend is expected to grow at a rate of 2.6% per year. To find the value per share at the end of 2018, we discount the future dividends to their present value using the equity cost of capital of 8.6%.

The present value of the dividends can be calculated as follows:

PV = (D1 / (1 + r)) + (D2 / (1 + r)^2) + ... + (Dn / (1 + r)^n)

where PV is the present value, D1 to Dn are the dividends for each year, r is the equity cost of capital, and n is the number of years.

In this case, n = 5 because we are discounting the dividends for the next five years. Let's calculate the present value:

PV = ($3.17 / (1 + 8.6%)) + ($3.40 / (1 + 8.6%)^2) + ($3.65 / (1 + 8.6%)^3) + ($3.92 / (1 + 8.6%)^4) + ($4.22 / (1 + 8.6%)^5)

PV = $3.17 / 1.086 + $3.40 / 1.086^2 + $3.65 / 1.086^3 + $3.92 / 1.086^4 + $4.22 / 1.086^5

PV ≈ $2.91 + $3.07 + $3.24 + $3.41 + $3.59

PV ≈ $16.22

Therefore, the estimated value per share of Procter and Gamble at the end of 2018 using the dividend-discount model is approximately $16.22.

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The dividend in 2018 was $2.95, and it is expected to grow at a rate of 7.4% for the next five years and 2.6% thereafter. With an equity cost of capital of 8.6%, the value per share at the end of 2018 can be calculated.

To calculate the value per share at the end of 2018, we need to discount the expected future dividends using the dividend-discount model.
The model assumes that the value of a stock is equal to the present value of all its expected future dividends. First, we need to calculate the dividends for each year from 2019 to 2023. We start with the dividend in 2018, which was $2.95. We then increase it by 7.4% each year for the next five years:

Dividend in 2019 = $2.95 * (1 + 7.4%) = $3.17
Dividend in 2020 = $3.17 * (1 + 7.4%) = $3.40
Dividend in 2021 = $3.40 * (1 + 7.4%) = $3.65
Dividend in 2022 = $3.65 * (1 + 7.4%) = $3.92
Dividend in 2023 = $3.92 * (1 + 7.4%) = $4.22

After 2023, the dividend is expected to grow at a rate of 2.6% per year. To find the value per share at the end of 2018, we discount the future dividends to their present value using the equity cost of capital of 8.6%.
The present value of the dividends can be calculated as follows:
PV = (D1 / (1 + r)) + (D2 / (1 + r)^2) + ... + (Dn / (1 + r)^n) where PV is the present value, D1 to Dn are the dividends for each year, r is the equity cost of capital, and n is the number of years.

In this case, n = 5 because we are discounting the dividends for the next five years. Let's calculate the present value: PV = ($3.17 / (1 + 8.6%)) + ($3.40 / (1 + 8.6%)^2) + ($3.65 / (1 + 8.6%)^3) + ($3.92 / (1 + 8.6%)^4) + ($4.22 / (1 + 8.6%)^5)
PV = $3.17 / 1.086 + $3.40 / 1.086^2 + $3.65 / 1.086^3 + $3.92 / 1.086^4 + $4.22 / 1.086^5
PV ≈ $2.91 + $3.07 + $3.24 + $3.41 + $3.59
PV ≈ $16.22
Therefore, the estimated value per share of Procter and Gamble at the end of 2018 using the dividend-discount model is approximately $16.22.

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The correct answer using the correct number of significant figures is 21.9.

To determine the correct answer with the appropriate number of significant figures, we need to consider the rules for significant figures.cThe result should be rounded to the fewest number of decimal places in any of the supplied integers whether adding or subtracting numbers.

In this case, the numbers being added have varying decimal places. 13.7 has one decimal place, 0.027 has three decimal places, and 8.221 has three decimal places.

To add these numbers, we align the decimal points and sum the values: 13.7 + 0.027 + 8.221 ------- 21.948

To follow the rule for significant figures, the least number of decimal places is one (from 13.7).

Therefore, the answer should be rounded to one decimal place.

Hence, the correct answer using the correct number of significant figures is 21.9.

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Therefore, the area of the composite figure is  41.2 square meter.

To find the area of the figure we need to calculate the area of the composite figure made of a triangle, square and semicircle.

To calculate the area of a triangle

Area= base × height/2

base is 6 feet.

height of 3 feet

Area = 6 × 3/2 = 9 square feet.

Area of semicircle

area of semicircle is area of circle/2 = πr²/2

= π × 3 ×3/2 = 9π/2.

= 22/7 × 9= 28.2 square meter

Area of square

Area of square = L×L.

area= 2×2 = 4 meter²

The area of the figure = area of square + area of triangle + area of semicircle.

Area = 4+ 9 +9π/2.

Therefore, the area of the composite figure is  41.2 square meter.

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The numbers given as 0.868668666866668666668... and 0.868668666866668666668... are  irrational numbers

From the question, the numbers are given as

0.868668666866668666668... and 0.868668666866668666668...

As a general rule.

Numbers that end in three dots are irrational numbers

The above is true because

When numbers cannot be represented as a fraction of integers, then such numbers are irrational numbers

Hence, the numbers are irrational numbers

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Both the given values 0.868668666866668666668.. and 0.868668666866668666668... are irrational numbers.

An irrational number is a type of real number which cannot be represented as a simple fraction or the values that have face value are irrational numbers. Example: √2, √3, and π are all irrational.

Here,
Both numbers are irrational numbers, because

Thus, Both the given values 0.868668666866668666668.. and 0.868668666866668666668... are irrational numbers.

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It will take 56.25 minutes to cut the log into 15 pieces.

Two or more expressions with an equal sign are defined as an equation.

Given that, James takes 15 minutes to cut the log into 4 pieces, which can be represented by:

4 pieces = 15 minutes

1 piece = 15/4 minutes

15 pieces = (15/4)×15 minutes

15 pieces = 56.25

Hence, it will take 56.25 minutes to cut the log into 15 pieces.

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The triangles are similar by SAS rule.

Similar triangles are those triangles which have the same shape, but different size.

The corresponding angles of similar triangles are equal and the corresponding sides are proportional.

Given are two triangles ΔGNH and ΔLNM.

∠N is common to both triangles are thus equal.

So ∠N ≅ ∠N

GN / LN = 40 / (12.5 + 40) = 40/52.5 = (16×2.5) / (21×2.5) = 16/21

HN / MN = 32 / (10 + 32) = 32/42 = (16×2) / (21×2) = 16/21

Two corresponding sides are proportional.

So, we have, two corresponding sides are proportional and the corresponding included angles are equal.

This is SAS Similarity rule.

Hence the triangles are similar by SAS similarity rule.

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If cholesterol level were changed to being measured in grams instead of milligrams, the correlation between fat content and cholesterol level would not be affected.

This is because correlation is a measure of the strength and direction of the linear relationship between two variables, and converting the units of measurement does not change the underlying relationship between the variables. So, the correlation coefficient of 0.75 would remain the same whether cholesterol level is measured in milligrams or grams.

The correlation between fat content and cholesterol level for the 20 different brands of American cheese slices is 0.75. If you change the measurement of cholesterol level from milligrams to grams (1 gram = 1000 milligrams), it will not affect the correlation. The correlation coefficient will remain 0.75, as it is unit-less and only represents the strength and direction of the relationship between the two variables.

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The average R-value for the entire attic is approximately R-37.6.

To calculate the average R-value, you need to consider the weighted average of the R-values for the insulated and pull-down stairs areas. Follow these steps:

1. Calculate the percentage of the attic covered by insulation and pull-down stairs: Insulated area (990 sqft) is 99% and pull-down stairs area (10 sqft) is 1% of the total attic area (1000 sqft).

2. Multiply the percentage of each area by their respective R-values: 99% * R-38 = 37.62 and 1% * R-1 = 0.01.
3. Add the weighted R-values: 37.62 + 0.01 = 37.63 ≈ R-37.6.

The average R-value for the entire attic is approximately R-37.6, taking into account both the insulated and pull-down stairs areas.

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Answer:

  b > -16

Step-by-step explanation:

The inequality is given as:

           b - 1 > -17

To solve this problem, add +1 to both sides of the expression:

          b  - 1 + 1 > -17 + 1

Now;

              b > -16

So, all values for which b is more than -16 satisfy the solution for this problem.

The equation that represents the exponential function passing through the points (-2, 1) and (2, 16) is: y = 4(2)^x

To write the exponential equation that passes through the points (-2, 1) and (2, 16), we can use the general form of an exponential function:

y = ab^x

Where y is the dependent variable, x is the independent variable, a is the initial value or y-intercept, and b is the base of the exponential function.

Step 1: Determine the value of a.

To find the value of a, substitute the coordinates of one of the given points into the equation. Let's use (-2, 1):

1 = ab^(-2)

Step 2: Determine the value of b.

To find the value of b, substitute the coordinates of the other given point into the equation. Let's use (2, 16):

16 = ab^2

Step 3: Solve the system of equations.

We now have a system of two equations with two unknowns (a and b):

1 = ab^(-2)

16 = ab^2

We can solve this system of equations to find the values of a and b. To do this, divide the second equation by the first equation:

16 / 1 = (ab^2) / (ab^(-2))

16 = b^4

Taking the fourth root of both sides, we get:

b = ±2

Step 4: Substitute the value of b back into one of the original equations to solve for a.

Let's substitute b = 2 into the first equation:

1 = a(2)^(-2)

1 = a / 4

a = 4

Alternatively, if we had chosen b = -2, we would have obtained a = -4, and the equation would be:

y = -4(-2)^x

Both equations represent exponential functions that pass through the given points.

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Answer: the answer is 21√10

Step-by-step explanation:

Step-by-step explanation:

ini bahasa apa goblaok

Standardize every test score from Mr. Bowman's class, the new mean would be 0, the new standard deviation would be 1, and the shape of the distribution would remain the same as before.

Let's first understand what standardizing means.
Standardizing test scores involves transforming the original scores to a new scale, called z-scores.

This process is done by subtracting the mean (average) score from each test score and dividing the result by the standard deviation of the scores. The formula for finding the z-score is:
z = (X - μ) / σ
X is the original test score, μ is the mean, and σ is the standard deviation.
Now, let's discuss the properties of the standardized scores:
New mean:

Standardize the test scores, the new mean (average) of the z-scores will always be 0.

This occurs because we subtract the mean from each test score, making the sum of the differences equal to 0.
New standard deviation:

After standardization, the standard deviation of the z-scores will always be 1.

This is because we divide each score by the original standard deviation, results in the new standard deviation being equal to 1.
Shape of the distribution:

The shape of the distribution (i.e., the pattern of the scores) will not be affected by standardization.

If the original scores followed a bell-shaped curve, the standardized scores would maintain the same bell shape.

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False. Athlon and A-Series processors manufactured by AMD are x86 compatible, meaning they can execute software and instructions designed for the x86 architecture.

Contrary to the statement, Athlon and A-Series processors manufactured by AMD are indeed x86 compatible. The x86 architecture, developed by Intel, has become the industry standard for personal computers and servers.

AMD, as one of the leading competitors in the processor market, has designed their processors to be fully compatible with the x86 instruction set.

The x86 architecture is characterized by its ability to handle complex and diverse tasks, providing compatibility with a wide range of software and operating systems.

Athlon and A-Series processors, being part of the x86 family, can seamlessly run software applications written for the x86 architecture without any compatibility issues.

This compatibility is essential for ensuring a smooth user experience and allowing users to leverage a vast ecosystem of software and tools that are built for the x86 platform.

AMD has made significant contributions to the advancement of x86 processors, introducing various architectural enhancements and optimizations.

These processors feature multiple cores, advanced cache systems, and support for high-performance computing tasks. They are widely used in desktop computers, laptops, and servers, catering to the needs of both consumers.

These processors are specifically designed to be fully compatible with the x86 architecture, ensuring efficient execution of software and providing users with access to a wide range of applications and tools.

The x86 compatibility of AMD processors is a significant factor contributing to their popularity and widespread use in the computing industry.

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The correct statement is B. For all b, the equation Ax=b has a solution.

Since the columns of A are linearly independent, then the matrix A has full rank, and its column space is equal to the entire vector space in which it resides. This means that for any given vector b, we can find a linear combination of the columns of A that is equal to b, and therefore the equation Ax=b has a solution for all b.

Option A is incorrect, as there may be certain b vectors for which Ax=b has a solution.

Option C is incorrect, as the equation Ax=b may have a solution even when A has fewer columns than rows.

Option D is incorrect, as we can determine whether or not the equation Ax=b has a solution for all b by checking the rank of A.

Option E is incorrect, as the equation Ax=b may have a solution even when A has more columns than rows.

Option F is incorrect, as a square matrix may or may not have linearly independent columns, and therefore may or may not have a solution for all b.

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The rate at which the machine crushes dry fruit is option (D) 4 1/3 kilograms per minute.

To find the rate at which the machine crushes dry fruit, we need to divide the amount of fruit crushed by the time taken. We can convert the mixed number of 3 1/4 kilograms to an improper fraction as follows

3 1/4 = (3 x 4 + 1)/4 = 13/4

So the rate at which the machine crushes dry fruit is

rate = amount of fruit crushed / time taken

= (13/4) / (3/4)

= 13/4 x 4/3

= 13/3

Convert to mixed fraction

= 4 1/3

Therefore, the correct option is (D) 4 1/3

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The given question is incomplete, the complete question is:

A processing machine crushes 3 1/4 kilograms of dry fruits in 3/4 minute. What is the rate, in kilograms per minute, at which the machine crushes dry fruit? A. 3/13 B. 16/39 C. 2 7/16 D. 4 1/3

In order to know if a triangle is a right triangle on a coordinate plane, you can find the lengths of all three sides of the triangle using the distance formula and apply the Pythagorean theorem.

Find the lengths of the three sides of the triangle using the distance formula.

Once you have the lengths of the sides, check if any of the three sides satisfy the Pythagorean theorem, which states that in a right triangle, the square of the length of the hypotenuse (the longest side) is equal to the sum of the squares of the other two sides. In other words, if a² + b² = c², where c is the longest side, then the triangle is a right triangle.

If one of the sides satisfies the Pythagorean theorem, then the triangle is a right triangle.

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She uses 1/2 quart of yellow paint for every 9/2 quarts of blue paint. Then, she uses 1/2 quart of yellow paint for every 1/2 + 9/2 = 10/2 = 5 quart of paint.

We can use the next proportion:

Solving for x:

She uses 1/10 quart of yellow paint for every quart of paint

Answer:

2 2/3

Step-by-step explanation:

8/3 = 2 2/3

When an object receives an applied net force, the velocity versus time graph will show a change in velocity over time. Therefore, the velocity versus time graph is a useful tool for analyzing the effects of net force on an object's motion.

When an object receives an applied net force, its velocity versus time graph will show the following characteristics:

1. A non-zero slope: The slope of the velocity vs. time graph represents the acceleration of the object. Since a net force is applied, the object will experience acceleration, and the graph will have a non-zero slope.

2. Linear relationship: If the net force applied is constant, the acceleration will also be constant. This results in a linear relationship between velocity and time on the graph. The slope of the graph will indicate the acceleration of the object, which is directly proportional to the net force applied. As the net force increases, the acceleration and slope of the graph will also increase.

3. Positive or negative slope: The direction of the slope depends on the direction of the applied force. If the net force is in the same direction as the object's initial velocity, the slope will be positive, indicating an increase in velocity. If the force is in the opposite direction, the slope will be negative, indicating a decrease in velocity.

In summary, the velocity vs. time graph of an object receiving an applied net force will have a linear relationship with a non-zero slope, which can be either positive or negative depending on the direction of the force.

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The system of equations has a solution at point W is:

C. y = -2x − 3

y = x + 4

If the coordinates of a point makes the equations of a system to be true, then it is a solution to the system of equations, and it is also the point of intersection of their lines.

Find the equation of each of the line that intersects at point W.

The declining line has a slope (m) = rise/run = -2/1 = -2

The y-intercept of the declining line is, b = -3.

Write the equation of the declining line by substituting m = -2 and b = -3 into y = mx + b:

y = -2x - 3

The increasing line has a slope (m) = rise/run = 2/2 = 1

The y-intercept of the declining line is, b = 4.

Write the equation of the declining line by substituting m = 1 and b = 4 into y = mx + b:

y = x + 4

Therefore, the system of equations is:

C. y = -2x − 3

y = x + 4.

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The probability of the shop purchasing is 5/9.

Let X be the number of non-defective engines purchased by the auto shop out of the 4 engines bought. We want to find P(X >= 3), the probability of getting at least 3 non-defective engines.

Using the hypergeometric distribution formula, we have:

P(X >= 3) = P(X = 3) + P(X = 4)

where

P(X = k) = (C(7, k) * C(2, 4-k)) / C(9, 4)

So, we have:

P(X = 3) = (C(7, 3) * C(2, 1)) / C(9, 4) = (35 * 2) / 126 = 5/18

P(X = 4) = (C(7, 4) * C(2, 0)) / C(9, 4) = (35 * 1) / 126 = 5/18

Therefore,

P(X >= 3) = 5/18 + 5/18 = 10/18 = 5/9

So the probability of the shop purchasing at least 3 non-defective engines is 5/9.

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Answer:

9:17

Step-by-step explanation:

Answer: 9:17 am

Step-by-step explanation: I added all the minutes together and got 77 minutes. Then I simplified the 77 minutes into an hour and 17 minutes. Then I added the 1hour and 17minutes to 8:00 am.

The height of the tree is approximately 28.87 m.

The height of a tree but cannot measure it directly.

You stand 50 m from the tree and determine that the line of sight from the ground to the top of the tree makes an angle of 30° with the ground.

Here is a diagram for the problem:

[asy]unitsize(0.1cm);  

pair A,B,C;  

B = (0,0);  

A = (50,0);  

C = (50,tan(60));  

draw(B--C--A--C);  

draw(rightanglemark(B,C,A,90));  

\(0.7954=\frac{x}{6}\)

x = 0.7954 × 6 = 4.7724

y = \(\frac{4.7724}{0.6225}\) = 7.6665

Computation: In the diagram, we can see that the height of the tree is given by "h".

And the angle between the line of sight and the ground is given by 30°.

The distance between the tree and the person is given by 50m.

From the diagram, we can see that the height of the tree, h can be represented as follows:tan(30°)

= opp/adj= h/50

Solving for h, we get:

h = 50 * tan(30°)h = 28.87 m

Height of the tree =4.7724+7.6665

= 12.4389

= 12.44 m.

Height of the tree at which it is broken =4.77 m.

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Answer:

1. -11

Step-by-step explanation:

2. All real numbers

Answer:

dunno

Step-by-step explanation:

Answer:2.25

Step-by-step explanation:

3/4 is equal to 0.75 and 0.75*3=2.25

Answer:

it is B

Step-by-step explanation:

just combine the like factors

It will take Joey's family approximately 21 months to save enough money, compounded monthly at a 5% interest rate, to finance their vacation trip to the amusement park.

To determine the time it will take to save enough money, we can use the formula for the future value of an ordinary annuity:

FV = P * [(1 + r)^n - 1] / r,

where FV is the future value, P is the monthly payment, r is the monthly interest rate, and n is the number of periods.

Given:

Desired future value (FV) = $5000,

Monthly payment (P) = $240,

Monthly interest rate (r) = 5% / 12 = 0.05 / 12 = 0.004167.

We need to solve for the number of periods (n) in the formula. Rearranging the formula, we have:

n = log(1 + (FV * r) / P) / log(1 + r),

where log denotes the logarithm with base 10.

Plugging in the given values, we get:

n = log(1 + ($5000 * 0.004167) / $240) / log(1 + 0.004167).

Using a calculator, we find that n is approximately 20.998, which rounds up to 21.

Therefore, it will take Joey's family approximately 21 months to save enough money, compounded monthly at a 5% interest rate, to finance their vacation trip to the amusement park.

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