13(9x+3)=3x+1 Solution:

Answer:

Step-by-step explanation:

the sum of the interior angles in a triangle is 180°

so

4x + 21x + 13 + 3x - 1 = 180

28x = 180 - 13 + 1

28x = 168

x = 168 : 28

x = 6

21x + 13 =

21 x 6 + 13 =

126 + 13 =

139°

--------------------------

check

4 x 6 = 24°

3 x 6 - 1 = 17°

139 + 24 + 17 =

180°

the answer is good

There are four levels of measurements in a grouped frequency distribution table - ordinal ,interval ,nominal, ratio.

What is a frequency distribution ?

A frequency table is a type of table used to represent the different frequencies from a collection of data.

In order to create a frequency table, you must first look at your data and create suitable groups. Your group size may depend on the number of variables you have. Once you have grouped your data you can tally the number of times each variable occurs to find out the frequency.

There are two types of frequency tables; grouped data and ungrouped data frequency tables.

A grouped frequency table (grouped frequency distribution) is a way of organising a large set of data into more manageable groups.

The level of measurement tells you how data is recorded. There are four different levels of measurements used in statistics:

1. Nominal-The nominal level of measurement is data that can be categorised but the data has no order.

Eg - Place of birth, eye colour, gender.

2. Ordinal- The ordinal level of measurement is data that can be categorised and ordered. Although there is an order between the data, you cannot see the intervals between each variable.

For eg - Satisfaction survey, top 5 goal scorers.

3. Interval- The interval level of measurement is data that can be categorised and ranked and there is a scale on which you know the difference between each of the variables.

For eg - Temperature, test scores.

4. Ratio-The ratio level of measurement gives an order to the variables, where there is a difference between the variables, as well as a true zero point.

For eg - Height, age.

Thus, there are four levels of measurements in a grouped frequency distribution table - ordinal ,interval ,nominal, ratio.

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There are four levels of measurements in a grouped frequency distribution table - ordinal, interval, nominal, and ratio.

What is a frequency distribution?

A frequency table is a type of table used to represent the different frequencies from a collection of data.

In order to create a frequency table, you must first look at your data and create suitable groups. Your group size may depend on the number of variables you have. Once you have grouped your data you can tally the number of times each variable occurs to find out the frequency.

There are two types of frequency tables; grouped data and ungrouped data frequency tables.

A grouped frequency table (grouped frequency distribution) is a way of organizing a large set of data into more manageable groups.

The level of measurement tells you how data is recorded. There are four different levels of measurement used in statistics:

1. Nominal-The nominal level of measurement is data that can be categorized but the data has no order.

Eg - Place of birth, eye color, gender.

2. Ordinal- The ordinal level of measurement is data that can be categorized and ordered. Although there is an order between the data, you cannot see the intervals between each variable.

For eg - Satisfaction survey, top 5 goal scorers.

3. Interval- The interval level of measurement is data that can be categorized and ranked and there is a scale on which you know the difference between each of the variables.

For eg - Temperature, test scores.

4. Ratio-The ratio level of measurement gives an order to the variables, where there is a difference between the variables, as well as a true zero point.

For eg - Height, age.

Thus, there are four levels of measurement in a grouped frequency distribution table - ordinal, interval, nominal, and ratio.

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Suppose the data on the quiz will be grouped into five classes. The width of the classes for a frequency distribution or histogram is closest to 15.

Total number of classes = 5

The data that represent scores on a pop quiz in a statistics section:

25 26 27 28 30 42 53 53 54 56 66 72 76 82 82 84 88 92 96 98

The maximum score from the data = 98

The minimum score from the data = 25

A frequency distribution for quantitative data = (Maximum Score - Minimum Score)/Total number of classes

A frequency distribution for quantitative data = (98 - 25)/5

A frequency distribution for quantitative data = 73/5

A frequency distribution for quantitative data = 14.5

A frequency distribution for quantitative data = 15 (approx)

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The complete question is:

The following data represent scores on a pop quiz in a statistics section:

25 26 27 28 30 42 53 53 54 56 66 72 76 82 82 84 88 92 96 98

Suppose the data on the quiz will be grouped into five classes. The width of the classes for a frequency distribution or histogram is closest to_______________(rounded up).

1. 10

2. 12

3. 15

4. 16

The Logarithmic function is a mathematical operation that is used to determine the logarithm of a number.

The logarithm of a number x is the exponent to which a fixed number, the base, must be raised to produce x. The most common bases used are 10 and e. The formula for determining the logarithm of a number x base d is: log base d of x = (log base d of x)/(log base d of b).

For example, if we want to calculate the log base 10 of a number x, we would use the formula: log base 10 of x = (log base 10 of x)/(log base 10 of b). We can calculate the log base 10 of a number x by taking the logarithm of x and dividing it by the logarithm of the base, 10. The result will be the log base 10 of x.

For example, if we want to calculate the log base 10 of 25, we would calculate the logarithm of 25 and divide it by the logarithm of 10. The calculation would be: log base 10 of 25 = (log base 10 of 25)/(log base 10 of 10) = (1.3979)/(1) = 1.3979. This means that the log base 10 of 25 is 1.3979.

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By using the concept of permutations and combinations, we can conclude that the shop can create 150 different sandwiches

We are given a deli that offers 5 fillings, 6 types of bread, and 5 condiments. Also, each sandwich consists of a filling, a type of bread, and a condiment.
We are asked to find the number of different sandwiches that the shop can create.

Here, we are gonna use the concept of permutations and combinations.

Number of different fillings = 5

Number of different beads = 6

Number of different condiments = 5

Number of different sandwiches = Number of different fillings x Number of different beads x Number of different condiments = 5

                                     = 5 x 6 x 5

                                     =  150 sandwiches

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The student made the following mistake: The use of operator "+" in binomial (x - 4) instead of "-" when factoring the quadratic equation x² - 3 · x - 4.

In this problem we find the case of a quadratic equation that must factorized by algebra properties. We present the complete procedure to show what mistake the student did. First, write the original expression:

x² - 3 · x - 4

Second, use definition of addition, associative and distributive properties:

x² - 4 · x + x - 4

Third, use conmutative property:

x² + x - 4 · x - 4

Fourth, use distribute property:

x · (x + 1) - 4 · (x + 1)

Fifth, apply commutative and distributive properties:

(x - 4) · (x + 1)

Sixth, use commutative property:

(x + 1) · (x - 4)

The student wrote the operator "+" instead of "-" in binomial (x - 4) of the quadratic equation x² - 3 · x - 4.

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Answer: True

Step-by-step explanation: Magnets do not have to touch, but their fields repel or attract other magnets without actual physical touch.

The number of three digits positive integers contain two (but not three) different digits is 243 .

In a 3 digit number the first digit cannot be zero ,

So , the total 3 digit number  is = 9 × 10 × 10 = 900 ;

the total three digit number with all different digit is = 9 × 9 × 8 = 648 different digits ;

and total three digits numbers with all same digits are {111 , 222 , ..., 999}

= 9 numbers ;

Therefore  , the number of three digits numbers with two but not three different digits is = 900 - 648 - 9 = 243 .

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The length of the other sides are 5cm and 12cm

Let the legs of the right triangle be 'a' and 'b'. Let the hypotenuse be 'h'.

We have the formula for perimeter as;

Perimeter, p = a + b + h = 30 cm

p = a + b + 13 cm = 30 cm

a + b = 30 - 13 = 17 cm

a = 17 - b …………… (1)

Using the Pythagorean Theorem

a² + b² = h²

(17 - b)² + b² = 13² ................ From equation (1)

b² + 17² - 34b + b² = 169

2b² - 34b + 289 - 169 = 0

collect like terms

2b² - 34b + 120 = 0

b² - 17b + 60 = 0

solve the quadratic equation

b² - 12b - 5b + 60 = 0

b(b - 12) - 5(b - 12) = 0

Factor the like terms

(b - 12)(b - 5) = 0

b = {12, 5}

From equation (1), we have;

a = 17 - 12 = 5 cm, or a = 17 - 5 = 12 cm

a = {5,12}

Hence, the values are 5cm and 12cm

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The probability of finding an average in excess of 4. 3 ounces of this ingredient from 100 randomly inspected 1-gallon samples of regular unleaded gasoline is approximately 0.7972.

We may use the normal distribution and the Z-score to determine the likelihood that 100 randomly selected 1-gallon samples of standard unleaded gasoline will have an average of more than 4.3 ounces of the component. A value's Z-score indicates how many standard deviations away from the mean it is.

We must first get the average of 100 randomly chosen samples' mean and standard deviation. The average's mean will be 4 ounces, which is also the mean of the individual samples. The sample size is divided by the square root of the standard deviation to get the average standard deviation, which is 1.2/100 = 0.12 ounces.

Next, we calculate the Z-score for the value of 4.3 ounces:

Z = (4.3 - 4) / 0.12 = 0.83

Finally, we use a Z-score table or a normal distribution calculator to find the probability of finding an average in excess of 4.3 ounces. The result will be the area under the standard normal distribution curve to the right of 0.83.

There is a 79.72% chance of finding an average in excess of 4.3 ounces of the ingredient from 100 randomly inspected 1-gallon samples of regular unleaded gasoline.

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Answer:

Step-by-step explanation:

y=-1x+5

12/16

explanation: i did the math

Answer:

The radius of the circle when 0 = 90°, A = 20 cm² and when 0 = 30°, A = 35 cm² is 7 cm. This can be determined by using the information from byjus.com, which states that the Find the Value of X calculator is a free online tool that can be used to calculate the radius of a circle. Using the calculator, the radius of the circle when 0 = 90°, A = 20 cm² and when 0 = 30°, A = 35 cm² is 7 cm.

Step-by-step explanation:

Ratio: Because it has a meaningful zero point and allows for meaningful comparison of value differences, the volume of a backpack is a ratio level of measurement.

Ratio: A backpack's capacity is a ratio level of measurement because it has a meaningful zero point, or when an item (in this case, capacity) is absent, it has a value of zero. Additionally, it is possible to meaningfully compare value differences. As opposed to other levels of measurement like nominal or ordinal where the differences between two values may not be relevant, this means that differences in capacity between two backpacks may be compared properly.

For instance, the difference between two backpacks can be considered to be twice as great if one backpack has a capacity of 20 litres and the other has a capacity of 40 litres (20 liters). Ratio is the most suitable level of measurement for a backpack's capacity since other levels of measurement cannot account for this disparity.

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Answer:

5x10^-19/x^3

Step-by-step explanation:

This behavior most directly illustrates the concept of superstition in gambling. Gamblers may believe that throwing the dice a certain way will influence the outcome and affect the results they desire.

This is a common belief among gamblers, despite there being no scientific evidence to support it. In reality, the way the dice are thrown has no impact on the outcome, as the result is determined purely by chance and the laws of physics.

Nevertheless, the belief in superstition is widespread in gambling and can influence behavior and decision making.

Gamblers often pitch the dice gently for low numbers and hard for high numbers. This most directly adorned an illusion of control Regression towards the mean refers to the tendency for unusual events to be followed by more ordinary events.

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The equation of the Linear Graph in slope intercept form is;

y = 15x + 20

The general form of the equation of a line in slope intercept form is;

y = mx + c

where;

m is slope

c is y-intercept

From the given graph, we see that the y-intercept is c = 20

Slope is gotten from the formula;

m = (y2 - y1)/(x2 - x1)

(-1, 5) and (0, 20)

m = (20 - 5)/(0 - (-1))

m = 15/1

m = 15

Thus, the equation is; y = 15x + 20

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Object A has a charge of 2 µc, and object B has a charge of 6 µc. Object B has a charge that is three times greater than object A.

Object A has a charge of 2 µc, and object B has a charge of 6 µc. To determine which statement is true, we need to compare the two charges. To do this, we can divide the charge of object B by the charge of object A. When we do this, the result is 3. This tells us that object B has a charge that is three times greater than object A. Therefore, we can conclude that the statement "Object B has a charge that is three times greater than object A" is true. Now that we know the statement is true, we can further explain why it is true. Object A has a charge of 2 µc, which is the smallest unit of charge and is equal to 10−6 coulombs. Object B has a charge of 6 µc, which is three times greater than the charge of object A. This means that the charge of object B is three times larger than the charge of object A. This is why the statement is true - because object B has a charge that is three times greater than object A.

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The value of RS would be 10.

What is an expression?

An expression is a mathematical phrase that can contain numbers, variables, and operators. It represents a value or a computation and can be evaluated to obtain a numerical result. For example, "2x + 3" is an expression where x is a variable and 2 and 3 are numbers, and the + and * symbols represent mathematical operations.

RS + ST = RT
x + 4 + 8 = 3x
3x - x = 12
2x = 12
x = 6

RS = x + 4
RS = 6 + 4

RS = 10

Hence, the value of RS would be 10.

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The general solution would be (y).e = C.

A differential equation is an equation that connects some independent variables to an unknown function and its derivatives. It is used to describe a system's behaviour that changes over time or in response to an outside factor.

There are many ways to solve the differential equation (x2 - y2) dy - 2xy dx = 0, including variable separation, integrating components, and substitution.

One possible method is separation of variables, where we separate the variables x and y by dividing both sides by x² -y2

dy/dx = 2xy/(x² -y²)

We can then integrate both sides:

[(dy/dx) dx = √(2xy/(x²-y²)) dx

y = √2xy/(x²-y²²) dx + C, where C is an arbitrary constant. solving this, (y-x).ec"

Hence, the general solution would be (y-x).e=C".

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The sampling distribution model for figuring out how many people in this group might not pay on time is:

E. mean = 8%; standard deviation = 1.1%.

The steps to determine the mean and standard deviation of the sampling distribution of the proportion of clients who may not make timely payments would be:

Start with the idea that 8% of the loans will have payments that are late. So the percentage of people who pay late is p = 0.08.

Calculate the sample size, which is given as n = 600.

Determine the mean of the sampling distribution. The mean of the sampling distribution of the proportion of late payments is equal to the population proportion, which is 0.08.

Find the standard deviation of the distribution of the samples. The standard deviation is discovered by taking the square root of the commodity of the sample size and the percentage of late payments in the whole population (1 - percentage of late payments in the whole population) and dividing it by the sample size:

σ = √( (p * (1-p)) / n )

σ = √( (0.08 * 0.92) / 600 ) ≈ 0.011

So, the answer will be option E. mean = 8%; standard deviation = 1.1%.

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The measurement of angle 5 is given as follows:

m < 5 = 150º.

In this problem, we have that two parallel lines are cut by a transversal line.

Angles 5 and 8 are on the same position relative to the transversal line, separated by one of the parallel lines, hence they form a linear pair, meaning that they are supplementary.

Supplementary angles have the sum of their measures with a result of 180º, hence the measurement of angle 5 is obtained as follows:

m < 5 + 30º = 180º

m < 5 = 150º.

The diagram is given by the image presented at the end of the answer.

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49 inches in feet is 4.08333.

You can easily convert 49 inches into feet using each unit definition:

Inches

inch = 2.54 cm = 0.0254 m

Feet

foot = 12 inch = 0.3048 m

Performing the inverse calculation of the relationship between units, we obtain that 1 foot is 0.24489796 times 49 inches.

A foot is zero times forty-nine inches.

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The key difference between observational studies and experimental designs is that a well-done observational study does not influence the responses of participants, while experiments do have some sort of treatment condition applied to at least some participants by random assignment.

An observational study is used in fields such as epidemiology, social sciences, psychology, and statistics to draw conclusions from a sample to a population where the independent variable is not under the researcher's control due to ethical concerns or logistical constraints.

Observational studies involve the study of participants who have had no forced change in their circumstances, i.e., no intervention.

Although participants' behavior may change while being observed, the goal of observational studies is to look into the 'natural' state of risk factors, diseases, or outcomes.

Observational studies are those in which researchers examine the impact of a risk factor, diagnostic test, treatment, or other intervention without attempting to change who is or is not exposed to it.

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The conversion of inches to yards is an important calculation in the field of measurement, especially in the United States where both units are widely used. To convert inches to yards, you must divide the number of inches by 36. This is because there are 36 inches in a yard.

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The fundamental existence theorem guarantees that for the initial value problem dy/dt = f(t,y), y(t0)=y0, where f is a continuous function on a region containing the point (t0, y0), there exists a unique solution y(t) defined on some interval containing t0.

The fundamental uniqueness theorem guarantees that if two solutions to the initial value problem exist, they must be equal on the intersection of their domains of definition.

For the first initial value problem: dy/dt = |t| + y, y(0) = 0, the fundamental existence theorem guarantees that there exists a unique solution to the problem in some interval containing t = 0.

For the second initial value problem: dy/dt = 2t + |y|, y(0) = 0, the fundamental existence theorem guarantees that there exists a unique solution to the problem in some interval containing t = 0.

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Answer:

I may be wrong but I  believe it could be (−∞, ∞).

Step-by-step explanation:

Depending on the polynomial is what the rage would be. I'm beyond sorry if it is wrong.

The volume of the bead when r = 1 and h = 6 is approximately 4.19 cubic centimeters.

The volume of a bead is a measure of the amount of space it occupies. In mathematics, we often use the formula for the volume of a sphere to calculate the volume of a bead.

In this case, the bead has two parameters: the radius (r) and the height (h). The radius determines the size of the bead while the height determines the length of the cylinder that makes up the bead.

When r = 1 and h = 6, we can substitute these values into the formula for the volume of a sphere to find the volume of the bead:

=> V = (4/3) * π * r³

=> V = (4/3) * π * 1³

=> V =  4.19 cm³

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The volume of the parallelepiped is 63 cubic units.

The volume of a parallelepiped is the amount of space it takes up. It is calculated by multiplying the lengths of its three sides together.

In this case, the parallelepiped has three sides: i+0j+0k, 0i+7j − k, and 9i+6j − k.

To find the volume, we will use the cross product of two of the vectors. The cross product of two vectors results in a third vector that is perpendicular to both.

The cross product of the first two vectors,

=> (i+0j+0k) x (0i+7j − k) = 7i − 7j − 0k.

The cross product of this vector and the third vector,

=> 9i+6j − k,

results in the vector

=> 63i + 63j − 63k.

The magnitude of this vector is the volume of the parallelepiped.

To calculate the magnitude, we use the Pythagorean theorem and find that it is equal to 63.

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The population of interest in the study is asthma patients aged 18-69 who relied on medication for treatment.

The population of interest in the study is adult individuals (aged 18-69) who have been diagnosed with asthma and are currently using the medication as a form of treatment for their condition. This group of people is the focus of the research, as the aim of the study is to assess the effectiveness of the Buteyko shallow breathing technique on reducing asthma symptoms and improving the quality of life for this specific population.

By randomly assigning the participants to two groups and observing the outcomes of each group, the researchers aim to determine if the Buteyko method can offer any additional benefits to asthma patients who are already taking medication.

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