Select the action you would use to solve x-3 =12. Then select the property that justifies that action.
Select all that apply.
A. Action: Add 3 to both sides
B. Action: Multiply both sides by 3
C. Action: Subtract 3 both sides
D. Property: Addition property of equality
E. Property: Multiplication property of equality
F. Property: Subtraction property of equality

The full scope of her survey or the methodology she used to collect her data.

According to Kierra's survey results, it seems that the number of females attending summer camp is slightly higher than the number of males. To complete the table for her survey results, we can use the following information:
- In the "Gender" column, we can write "Male" and "Female" to represent the two categories Kierra surveyed.
- In the "Number of Participants" column, we can fill in the values that Kierra collected from her neighborhood.

For example, if she surveyed 100 people and found that 40 of them were males attending summer camp, we can write "40" in the row for "Male" under the "Number of Participants" column.
- We can then add up the values in each row to find the total number of participants in each category. For example, if Kierra found that 60 females attended summer camp, we can write "60" in the row for "Female" under the "Total" column.
| Gender | Number of Participants | Total |
|--------|----------------------|-------|
| Male   | 40                   | 100   |
| Female | 60                   | 100   |
It's important to note that this is only a small part of Kierra's survey results, and we don't know the full scope of her survey or the methodology she used to collect her data.

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After solving the given equation we find out that the value of x = -2, y = 6.

To solve for x and y, we can use the method of elimination, also known as the addition method. The idea is to add the two equations together in a way that eliminates one of the variables. In this case, we can add the two equations as follows:

(4x + y) + (3x - y) = -2 + (-12)

Combining like terms, we get:

7x = -14

Dividing both sides by 7, we get:

x = -2

Now that we know x, we can substitute this value into either of the original equations to solve for y. Let's use the first equation:

4x + y = -2

Substituting x = -2, we get:

4(-2) + y = -2

Simplifying, we get:

-8 + y = -2

Adding 8 to both sides, we get:

y = 6

Therefore, the solution to the system of equations is:

x = -2, y = 6.

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The critical value t for constructing a 99% confidence interval for a  with 11 degrees of freedom is approximately 3.106.

A t-distribution table is a table of values that shows the critical values for the t-distribution, which is a probability distribution used in statistics.

The table is typically organized by degrees of freedom and the level of significance (α) for a two-tailed test.

To find the critical value t* for a 99% confidence interval for a mean with 11 degrees of freedom, we can use a t-distribution table or a calculator.

Using a t-distribution table, we can find the critical value that corresponds to a 99% confidence level and 11 degrees of freedom.

The table shows that the critical value is approximately 3.106.

Alternatively, we can use a calculator that has a t-distribution function.

For example, using the function (0.005, 11) in Microsoft Excel will give us the same result of approximately 3.106.

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Answer:

Step-by-step explanation:

60$. (((150 * 40 and divide by 100)))

Step-by-step explanation:

She used    40%  of $150  :

40%  *  $150   =   .40 * 150  =  $ 60  for the   pup-a-roo.

The total area of the rectangle and square joined together is 27 cm².

First, let's find the area of the rectangle. The formula for the area of a rectangle is A = L x W, where A is the area, L is the length, and W is the width.

In this case, the length of the rectangle is 6 cm and the width is equal to the length of the square, which is also 3 cm. So, the area of the rectangle is:

A = 6 cm x 3 cm

A = 18 cm^2

Now let's find the area of the square. The formula for the area of a square is A = s^2, where A is the area and s is the length of a side.

In this case, the length of the side of the square is also 3 cm. So, the area of the square is:

A = 3 cm x 3 cm

A = 9 cm^2

To find the total area of the rectangle and square joined together, we simply add the two areas together:

Total area = area of rectangle + area of square

Total area = 18 cm^2 + 9 cm^2

Total area = 27 cm^2

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I remember doing this but I don’t seem to remember

The law of large numbers says that as a company insures more and more workers chosen at random, the average costs get closer to $439. So, the answer is option B.

As a company insures more and more workers chosen at random, the average cost gets closer to $439.

The law of large numbers states that as the sample size increases, the sample mean gets closer to the population mean. In this case, the population mean is the mean worker's compensation claim cost of $439 per insured worker.

As the company insures more and more workers chosen at random, the sample size increases, and the sample mean of the worker's compensation claim cost will converge to the population mean of $439.

The law of large numbers does not guarantee that an insurance company can get an average workers' compensation cost lower than the mean by insuring a large number of people. The option B is correct.

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--The given question is incomplete, the complete question is given below

"Medical care and compensation costs for workers injured on the job vary a lot and are strongly skewed as a whole. The National Academy of Social Insurance reports that the mean worker's compensation claim cost in a year is = $439 per insured μworker, with standard deviation = $20,000. The law of large numbers says that σ(choose the correct option)

A) an insurance company can get an average workers’ compensation cost lower than the mean by insuring a large number of people.

B) as a company insures more and more workers chosen at random, the average costs gets closer to $439"--

735.24563 is the the sphere's volume V.

What does sphere refer to?

The shape and symmetry of a sphere are both round. All of its surface points are equally spaced from the centre, making it a three-dimensional solid. On the basis of its radius, it has a surface area and a volume.

                             There are no faces, corners, or edges on it. the collection of all locations in three dimensions that are the same distance from a specific point (the centre) is known as the radius, or the outcome of rotating a circle around one of its diameters. The elements and characteristics of a sphere are comparable to those of a circle.

 D = 11.2  

 r = 11.2/2  = 5.6

 the sphere's volume  = 4/3 πr³

                                   = 4/3 * 3.14  * (5.6)³

                                  = 735.24563

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Answer:

  40 seconds

Step-by-step explanation:

You have a Ferris wheel such that the height of a rider is modeled by d=30sin(πt/20)+15, and you want to know the time it takes for one revolution.

The sine function has a period of 2π. The value of the function when the argument is 2π is the same as when it is zero. The period is the time difference between those argument values. Since the argument is 0 when t=0, we only need to find the value of t that makes the argument 2π:

  2π = πt/20

  40 = t . . . . . . . multiply by 20/π

The Ferris wheel makes one revolution in 40 seconds.

A sufficient estimator is the distributions of exponential.The correct answer to this question is (c) exponential.

An estimator is a rule or procedure that is used to determine an estimate of a parameter based on observed data. A statistic is used to estimate a parameter, and it is computed from the observed data. An estimator is a random variable that computes a statistic from the data.

The following distributions have a sufficient estimator:

Poisson Distribution with parameters λ and x is a Poisson distribution.

The rate of the occurrence is λ.

Exponential Distribution with parameters λ and x is an exponential distribution.

The mean waiting time is 1/λ.

Bernoulli The Bernoulli distribution is not sufficient for an estimator, but the binomial distribution, which generalizes the Bernoulli distribution, is. In the context of the binomial distribution, p is a parameter Exponential

The exponential distribution is a continuous probability distribution that describes the time between events in a Poisson process, such as the amount of time until the next vehicle arrives at a traffic intersection or the amount of time a particular component lasts in a manufacturing process.

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Answer:

Q and R

Step-by-step explanation:

The fixed fee of $6 covers the cost of the vehicle, and the fee of $4 per person covers the cost of maintaining the park facilities and services.

In mathematics, a function is a rule that assigns a unique output for each input in a specified set. It is often denoted by an equation or formula, and it describes the relationship between the inputs (independent variables) and the outputs (dependent variables). The set of all possible inputs is called the domain, and the set of all possible outputs is called the range. Functions are used in many areas of mathematics, as well as in science, engineering, and other fields to model real-world phenomena and to solve problems.

Here,

1. To estimate how much a bus containing 30 people would be charged, we can look for a pattern in the given examples. We notice that the fee increases as the number of people in the vehicle increases. Also, the fee for a car containing 2 people is $14, which can be seen as a fixed fee. Therefore, we can assume that the fee for a vehicle containing n people is of the form f(n) = a + bn, where a is the fixed fee and b is the fee per person. Using the information given, we can set up two equations:

f(2) = 14, which gives a + 2b = 14

f(4) = 20, which gives a + 4b = 20

Solving these equations, we get a = 6 and b = 4. Therefore, the rule for the entrance fee is f(n) = 6 + 4n. Substituting n = 30, we get f(30) = $126.

2. To estimate how many people a bus contains if it is charged $122, we can use the same rule that we derived in part 1: f(n) = 6 + 4n. Setting f(n) = 122, we get 6 + 4n = 122, which gives n = 29. Therefore, we can estimate that the bus contains 29 people.

3. Based on the given examples and our analysis in parts 1 and 2, we can infer that the state park uses a linear rule to decide the entrance fee for a vehicle. Specifically, the rule is f(n) = 6 + 4n, where n is the number of people in the vehicle.

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which is approximately 3.864 times the length of QS.the circle is approximately 4 times the length of QS, or approximately 4 times 0.966 times the length of QS,

An angle is a measure of the amount of turn between two lines or rays that meet at a common point, known as the vertex of the angle. The angle is typically measured in degrees or radians. In a Euclidean plane, an angle can range from 0 degrees (corresponding to two lines that are parallel to each other) to 180 degrees (corresponding to two lines that form a straight line). An angle greater than 180 degrees is called a reflex angle. Angles are used in many areas of mathematics and physics, such as geometry, trigonometry, and calculus, as well as in real-world applications such as navigation, architecture, and engineering.

by the question.

The ratio of the central angle ZQTS to the whole circle is 1/12, or 0.0833 (rounded to four decimal places). This is because there are 360 degrees in a circle, and 75 is 1/12 of 360.

QS represents 1/4 of the circle's circumference. This is because the central angle ZQTS is 75 degrees, which is 1/3 of a right angle (90 degrees). An inscribed angle that intercepts the same arc as a 1/3 angle will have twice the measure of the 1/3 angle, or 150 degrees. Thus, angle QTS is 150 degrees. Angle QOS is also 150 degrees, since it intercepts the same arc as QTS. Therefore, angle QOT is 60 degrees, since the angles in triangle QOT add up to 180 degrees. Since triangle QOT is an equilateral triangle, QT and QS are equal in length, and angle QTS is 75 degrees, we can use the sine function to find the length of QS. The sine of 75 degrees is approximately 0.966, so QS represents approximately 0.966 times the circumference of the circle. Since QS represents 1/4 of the circumference, the circumference of the circle is approximately 4 times the length of QS, or approximately 4 times 0.966 times the length of QS,

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Answer:x=7

Step-by-step explanation:Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

                    5*x-2+x-(9+3*x+10)=0

Step by step solution :

STEP

1

:

Pulling out like terms

1.1     Pull out like factors :

  3x - 21  =   3 • (x - 7)

Equation at the end of step

1

:

STEP

2

:

Equations which are never true:

2.1      Solve :    3   =  0

This equation has no solution.

A a non-zero constant never equals zero.

Solving a Single Variable Equation:

2.2      Solve  :    x-7 = 0

Add  7  to both sides of the equation :

                     x = 7

One solution was found :

x = 7

The scale factor of the two rectangles show a common ratio of 4/5

A scale factor in geometry is a ratio that indicates how much a figure has been extended or shrunk.

When two figures are comparable, the scale factor is the ratio of any matching lengths in the two figures.

A scale factor of higher than 1 indicates expansion, whereas a scale factor of less than 1 indicates decrease. The figure is the same size as the original when the scale factor is 1.

The dimensions of comparable figures can be calculated using scale factors. For instance, we can use the scale factor to determine the length of the corresponding side of the smaller rectangle if we know the scale factor between two identical rectangles and the length of one of its sides of the larger rectangle.

In the given figure;

12/15 = 36/45

Let's find the ratio here;

4/5 =4/5

The scale factor is 4/5

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The answer option to the above question is The 3 ordered pairs are B, (4,10),(4,11),(4,12).

In this context, the word "equation" refers to the equation of the line that best fits a certain set of data points. A straight line that most accurately depicts the trend or pattern in a collection of data points is called the line of best fit. Predictions or estimations for additional data points that might not be a part of the initial set can be made using the equation of the line of best fit.

According to the given information:

To determine which three ordered pairs are most likely the added data points, we need to consider the slope and y-intercept of the original line of best fit. Since the equation of the line of best fit remains unchanged, the new points must lie on the original line.

The original line of best fit can be determined using a linear regression algorithm. However, we can estimate the slope and y-intercept of the line by simply finding the coordinates of two points on the line.

We can use the first and last points in the original set of data to estimate the slope and y-intercept. Using these points, we find that the equation of the line of best fit is:

y = -0.84x + 10.8

Now we can check which of the given sets of points lie on this line:

A: (4,4), (5,5), (6,6)

For (4,4), y = -0.84(4) + 10.8 = 7.56, which is not equal to 4. So (4,4) is not on the line.

Similarly, (5,5) and (6,6) are not on the line.

Therefore, A is not the correct answer.

B: (4,10),(4,11),(4,12)

For (4,10), y = -0.84(4) + 10.8 = 7.56, which is equal to 10. So (4,10) is on the line.

Similarly, (4,11) and (4,12) are also on the line.

Therefore, B is a possible answer.

C: (8,9),(8,10),(8,11)

For (8,9), y = -0.84(8) + 10.8 = 4.32, which is not equal to 9. So (8,9) is not on the line.

Similarly, (8,10) and (8,11) are not on the line.

Therefore, C is not the correct answer.

D: (10,10),(10,11),(10,12)

For (10,10), y = -0.84(10) + 10.8 = 3.96, which is not equal to 10. So (10,10) is not on the line.

Similarly, (10,11) and (10,12) are not on the line.

Therefore, D is not the correct answer.

Therefore, the answer is B, (4,10),(4,11),(4,12).

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We can start by using the formula for calculating the average:

Average = Total sum / Number of items

Let x be the average weight of the other 3 bags of rice. Then we can set up the following equation:

(2 bags weight + 3 bags weight) / 5 bags = Total weight / Number of bags

Substituting the given values, we get:

(2 x 8.16 kg + 3 bags weight) / 5 bags = 32.4 kg / 5 bags

Simplifying and solving for 3 bags weight, we get:

3 bags weight = (32.4 kg / 5 bags) x 5 - 2 x 8.16 kg

3 bags weight = 16.2 kg - 16.32 kg

3 bags weight = -0.12 kg

This means that the total weight of the other 3 bags is negative, which is not possible. Therefore, we have made an error in our calculations.

We can check our work by solving for the average weight of all 5 bags using the formula:

Average = Total sum / Number of items

Substituting the given values, we get:

Average = 32.4 kg / 5 bags

Average = 6.48 kg per bag

Therefore, the average weight of the other 3 bags of rice is:

Average = (Total weight - 2 x 8.16 kg) / 3 bags

Average = (32.4 kg - 16.32 kg) / 3 bags

Average = 16.08 kg / 3 bags

Average = 5.36 kg per bag

Therefore, the average weight of the other 3 bags of rice is 5.36 kg.

5.36kg.

I hope my answer helped you.

RobertOnBrainly

Answer:

[tex]y = - 5x - 4[/tex]

Step-by-step explanation:

[tex] - 9 = - 5(1) + b[/tex]

[tex] - 9 = - 5 + b[/tex]

[tex]b = - 4[/tex]

[tex]y = - 5x - 4[/tex]

Answer: 8

Step-by-step explanation:

First we must set up the equation.

Jake adds 5 to the number then he multiplies it by 2.

2(x+5)

This is equal to the same number times 5 minus 14.

2(x+5)=5x-14

Distribute.

2x+10=5x-14

Add 14 to both sides.

2x+24=5x

Subtract 2x from both sides.

24=3x.

Divide both sides by 3.

8=x

Answer:

Jake thinks of the number 8.

Hope this helps!

Step-by-step explanation:

Turn the paragraph-given information into an equation:

Adds 5 = x + 5 and then multiplies the result by 2 = ( x + 5 ) * 2

5 times the number = x * 5 then take away 14 = ( x * 5 ) - 14

The same as means :

2 * ( x + 5 ) = ( x * 5 ) - 14

2x + 10 = ( 5x ) - 14

2x + 10 = 5x - 14

2x ( - 2x ) + 10 ( + 14 ) = 5x ( - 2x ) - 14 ( + 14 )

24 = 3x

8 = x

x = 8

If you plug 8 into the two equations, you will find both equations equal 26.

There are 36 options, and 6 of them match.

The idea of probability describes the possibility of an event happening.

We frequently have to make forecasts about the future in real life.

We may or may not be aware of the outcome of an event.

When this happens, we declare that there is a chance the event will take place.

In summary, probability has a wide range of fantastic applications in entertainment, business, and this recently expanding branch of artificial intelligence.

The probability formula can be used to determine the likelihood of an event by only dividing the favorable number of possibilities by the entire number of p-ossible outcomes.

According to our question-

Die 1  |  Die 2   | Same?

____________________

   1      |    1       |    YES

   1      |     2      |    N

   1      |     3      |    N

   1      |     4      |    N

   1      |     5      |    N

   1      |    6       |    N

   2      |    1       |    N

   2      |    2       |    YES

   2      |   3        |    N

Hence, There are 36 options, and 6 of them match.

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The best description of the roots of the equation [tex]x^2 - 4x + 4 = 0[/tex]  is that it has two equal or identical real roots.

Identical real roots are solutions to a quadratic equation in which both roots have the same value. In other words, if a quadratic equation has identical real roots, it means that there is only one solution to the equation, and that solution is repeated twice.

To use the discriminant to describe the roots of equation [tex]x^2 - 4x + 4 = 0[/tex] we need to first identify the coefficients of the quadratic equation:

[tex]a = 1\\b = -4\\c = 4[/tex]

The discriminant is given by the expression [tex]b^2 - 4ac[/tex].  Substituting the values of a, b, and c, we get:

[tex]b^2 - 4ac\\ = (-4)^2 - 4(1)(4)\\ = 16 - 16 = 0[/tex]

Since the discriminant is equal to zero, this tells us that the quadratic equation has two equal roots. In other words, the equation has a single root with a multiplicity of two.

The best description of the roots of equation x^2 - 4x + 4 = 0 is that it has two equal or identical real roots.

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Therefore, each bus can hold 22 students if there were 12 students per van.

In mathematics, an equation is a statement that asserts the equality of two expressions. Equations typically contain one or more variables, which are symbols that can represent different values. Solving an equation means finding the value or values of the variable(s) that make the equation true.

Here,

a) Let V be the number of vans and B be the number of buses. We know that there were 8 vans and 12 buses, so we can write:

V + B = 20 (the total number of vehicles)

We also know that there were 360 students in total. If we assume that each van can hold 12 students, and each bus can hold some number of students, we can write:

12V + bB = 360 (the total number of students)

where b is the number of students that each bus can hold.

b) We can use the equation we derived in part a) and substitute V = 8 to solve for B:

V + B = 20

8 + B = 20

B = 12

So there were 12 buses in total. We can then use the equation 12V + bB = 360 and substitute V = 8 and B = 12 to solve for b:

12V + bB = 360

12(8) + b(12) = 360

96 + 12b = 360

12b = 264

b = 22

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We can conclude after answering the provided question that As a result, rectangle the surface area of the trapezoidal prism is 180 to the nearest whole number.

In Euclidean geometry, a rectangle is a triangular prism with four slight angles. It can also be described as a basic rule hexagon or one in which all of the angles are equal. A whole other option for the parallelogram is a straight angle. Four of something like the vertices in a square are the same length. A quadrilateral with four 90° angle vertices and equal parallel sides has a rectangle-shaped cross section. As a result, it is also known as a "vector graphics rectangle" at times. A rectangle is sometimes referred to as a parallelogram due to the equal and parallel sizes of its two sides.

Two trapezoidal faces and four rectangular faces comprise the trapezoidal prism.

To begin, we can use the formula to calculate the area of one of the trapezoidal faces:

Trapezoid area = (1/2) x (sum of parallel sides) x (height)

Area of trapezoidal face = (1/2) x (7 + 10) x 4 = 34

7 x 4 = 28 area of rectangular face

The total area of the rectangular faces is: because there are four rectangular faces

Total rectangular face area = 4 x 28 = 112

Total surface area equals the sum of the areas of trapezoidal and rectangular faces.

Surface area total = 68 + 112 = 180

As a result, the surface area of the trapezoidal prism is 180 to the nearest whole number.

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The sum that shows how many concert tickets were sold using the given parameters is: ²/₅x + 60

Algebraic expressions are defined as the simple idea of expressing numbers with the aid of letters or alphabets without even specifying their actual values.

Let the total number of tickets available for sale be denoted as x.

We are told that 100 tickets were sold last week. Thus:

Amount of tickets left unsold = (x - 100)

We are now told that 2/5 of the remaining tickets were sold this week. Thus:

Number of tickets sold this week = ²/₅(x - 100)

Thus:

Total Number of Tickets sold = 100 + ²/₅(x - 100)

= 100 + ²/₅x - 40

= ²/₅x + 60

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A financial investment broker earns 4% on each customer dollar invested. If the broker invests $50,000, the commission on the investment is $2,000.

The commission earned by the broker on the investment will be equal to 4% of the total investment amount.

So, the commission earned by the broker on investing $50,000 will be:

Commission = 4% of $50,000

Commission = (4/100) x $50,000

Commission = 4 x  $500

Commission = $2,000

Therefore, the commission earned by the broker on investing $50,000 will be $2,000.

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Given data in the problem is,

—-> 43 litre bucket of dye per 1 roll

-—> In feet, it is 1067 feet long

If 4 buckets of dye, can it dye 5 rolls of fabric

The factory has 172 liters of dye available.

Liters is a unit of volume in the International System of Units (SI). It is commonly used to measure the volume of liquids, gases, and solids that can be poured or contained in a container. One liter is equivalent to 1000 cubic centimeters (cc) or milliliters (ml), and it is roughly equal to 1.057 quarts or 0.264 gallons.

In the given question,

First, we need to find out how much dye is needed for one roll of fabric. We know that 43 liters of dye are needed for 1 roll of fabric that is 1,067 feet long.

Therefore, we can say that:

1 roll of fabric = 43 liters

To find out how much dye is needed for 5 rolls of fabric, we can multiply both sides of this equation by 5:

5 rolls of fabric = 5 × 43 liters

1,067 feet = 215 liters

1,067 feet

So, 5 rolls of fabric would require 215 liters of dye.

Next, we need to check if the 4 buckets of dye are enough to dye 5 rolls of fabric. Each bucket contains 43 liters of dye, so 4 buckets would contain:

4 buckets of dye = 4 × 43 liters

= 172 liters

Therefore, the factory has 172 liters of dye available.

Since 215 liters of dye are required for 5 rolls of fabric, and the factory has only 172 liters of dye available, it cannot dye 5 rolls of fabric with the given amount of dye.

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Answer:

a) y = -2.812x + 97.554

b) the correlation coefficient is about -0.97, which is a strong linear fit.

Step-by-step explanation:

you need a graphing calculator for linear regression, but desmos works fine :)

plugging in all the values into a table and letting the calculator do the work :D (attatched image)

the equation: y = -2.812x + 97.554

next, (also in the screenshot) the r-value, or the correlation coefficient, is about -0.97, and we want this to be as close to 1 or -1 as possible to get a perfect linear regression.

this is pretty close to -1, so i'd say that the linear fit is strong :)

Answer:

Step-by-step explanation:

when i got it it was d

let me give you a cheesy answer, hmm the exponent on the compound interest is 4t, the years is "t", and the number pegged to it is the "compounding period", in this case is 4, so that means the compounding period is 4, so the account compounds 4 times a year, so is a quarterly period.

[tex]~~~~~~ \textit{Compound Interest Earned Amount} \\\\ A=P\left(1+\frac{r}{n}\right)^{nt} \quad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{original amount deposited}\dotfill &\$200\\ r=rate\to r\%\to \frac{r}{100}\\ n= \begin{array}{llll} \textit{times it compounds per year} \end{array}\\ t=years \end{cases} \\\\\\ ~\hfill A=200(1.10)^{4t}~\hfill[/tex]