6-r+3r=4 solve for r

Answer:

x- axis, I'm pretty sure

Step-by-step explanation:

Answer: The x axes

Step-by-step explanation:

The difference between the 2 in the tens place and 2 to its left column in the given number 2,222.222 is 180.

According to the number system, a number can be written in its expanded form according to their pace value in the chart.

2,222.222 can be written as 2×1000+2×100+2×10+2X1+2×1/10+2×1/100+2×1/1000

The place value of 2 in the tens place in given number 2,222.222 = 20

The place value of 2 in its left column in the given number 2,222.22  = 200

Difference between the place of 2 in tens place and 2 in its left column

= 200 - 20

= 180

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Answer:

48m of fence

Step-by-step explanation:

Area of a square = s²

256 = s²

√256 = s

s = 16

There are 4 sides in a square, however, one side is the house, so in total, you need to find 3 sides.

16 * 3 = 48

Answer:

18 girls

Step-by-step explanation:

6:9

6+9 = 15

we multiply each part of the ratio by 3

6*3 = 18 girls

9*3 = 27 boys

Answer:

C. 4436.54

Step-by-step explanation:

230700.00÷52=4436.54

there are 52 weeks in a year, annual means year

Answer:

the answer is C

C. 4436.54

The chances of getting any leprechaun cat is very low.

It is difficult to gauge the probability of such a creature existing, assuming you are talking to a made-up creature that combines the traits of a leprechaun and a cat.

There is no way to anticipate how leprechauns and cats might interact in real life since they are both made-up creatures.

Even if we for sometime consider that there is such creature then the size of that creature would depend on the specific breed of that cat.

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Answer:

Step-by-step explanation:

-3x + y = 2 Equation (1)

7x -8y = 1 Equation (2)

Let us solve the system of equations with the elimination method.

-24x + 8y = 16 (Multiplying the equation 1 by 8)

+ 7x - 8y = 1 (Adding the equation 2 to the last form of the equation 1)

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

-17x = 17 (Adding like terms)

x = 17/(-17) ( Dividing by -17 on both sides of the equation)

x= -1

Replacing x=-1 in the equation 1,we have:

-3(-1) + y = 2

3 + y = 2 (Multiplying and using the sign rules)

y = 2- 3 (Subtracting 3 from both sides of the equation)

y = -1 (Subtracting)

The answers are x=-1 and y=-1

Answer:

a=18

Step-by-step explanation:

-2a-10+a=-28

-1a-10=-28

+10 +10

-1a=-18

divide by -1

a=18

Answer: d 64

Step-by-step explanation:

Answer:

The correct answer to this question is D, 64 degrees.

Step-by-step explanation:

This is correct because I took the test and got 100%

the most likely answer is 17

Step-by-step explanation:

add the 8 to the 26 to get 34

divide the two on both sides

2 divided by 2 is x

34 divided by two is 17

so

x = 17

Answer:

Step-by-step explanation:

divide through by the coefficient of \(x^{2}\)

\(\frac{5x^{2} }{5}\) + \(\frac{16x}{5} + \frac{-40}{5} = \frac{8}{5}\)

\(x^{2} +\frac{16}{5}x -8 =\frac{8}{5}\)

\(x^{2} +\frac{16}{5} x = \frac{8}{5} +8\)

\(x^{2} + \frac{16}{5} x =\frac{48}{5}\)

Add half of the square of the coefficient of x  to both sides \((\frac{1}{2} X \frac{16}{5} ) ^{2}\)

\(x^{2} + \frac{16}{5}x + (\frac{1}{2} X \frac{16}{5} )^{2} =\) \(\frac{48}{5} +(\frac{1}{2} X \frac{16}{5} )^{2}\)

\(x^{2} +\frac{16}{5} x +(\frac{16}{10}) ^{2} =\frac{48}{5} +\frac{64}{25}\)

\((x +\frac{16}{10})^{2} =\frac{304}{25}\)

\(x +\frac{16}{10} =\)±\(\sqrt{\frac{304}{25} }\)

\(x = -\frac{16}{10}\) ± \(\sqrt{\frac{304}{25} }\)

\(x=-\frac{16}{10} + \sqrt{\frac{304}{25} }\) or\(-\frac{16}{10} - \sqrt{\frac{304}{25} }\)

\(x = 1.89\) or -5.09

Answer:

Let c be the number of children and a be the number of adults.

1.75c + 2.25a = 1,180->1.75c + 2.25a = 1,180

c + a = 574->1.75c + 1.75a = 1,004.5

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

.5a = 175.5

a = 351, so c = 223

So there were 351 adults and 223 children that day.

Emma is asking an empirical question so that she she can test her hypothesis

What is a Empirical hypothesis?

Something empirical is something based on real evidence .

Evidence that is verifiable by observation as opposed to something that is true in theory or by some kind of reckoning or logic

A hypothesis is a theory that is put forward for further examination to see if it is correct. It is not a call but it is an explanation that fits the available evidence so , An empirical hypothesis is a theory that is based on real evidence and experience but that has not been proven yet

So, According to the question

Emma wants to know if long distance relationship in college have a greater likelihood of ending than a relationship that are not long distance and for that she creates a questionnaire and the crowds 100 student from our school to complete the questionnaire so she can test her hypothesis

Here, Emma is asking an empirical questions ( question about experience) and will conclude the test based on these 100 students experience and thoughts.

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The recursive formula f(n+1) = f(n) + 5, you can find any term in the sequence by starting with the initial term and adding 5 repeatedly.

To represent the given arithmetic sequence where 5 is added to each term to determine each successive term, the recursive formula can be expressed as: f(n+1) = f(n) + 5

In this formula, f(n+1) represents the next term in the sequence, while f(n) represents the current term. By adding 5 to each term, we can generate the next term in the sequence.

For example, let's assume the first term of the sequence is f(1) = a. Then, the second term would be f(2) = a + 5. The third term would be f(3) = (a + 5) + 5 = a + 10, and so on.

By using the recursive formula f(n+1) = f(n) + 5, you can find any term in the sequence by starting with the initial term and adding 5 repeatedly.

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The area of the smaller sector or minor sector is  125.66 yd².

The area of the larger sector or major sector is  326.73 yd².

The areas of the minor and major sectors is calculated by applying the following formulas follow;

Area of sector is given as;

A = (θ/360) x πr²

where;

The area of the smaller sector or minor sector is calculated as follows;

A = ( 100 / 360 ) x π ( 12 yd)²

A = 125.66 yd²

The area of the larger sector or major sector is calculated as follows;

θ = 360 - 100

θ = 260⁰

A =  ( 260 / 360 ) x π ( 12 yd)²

A = 326.73 yd²

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Answer:

Probability of drawing an odd number.

Number of odd numbers = 5

Number of numbers in the set = 10

So it's a 5 in 10 chance or 1 in 2 chance.

Probability of drawing a multiple of 3.

Multiples of 3 in the set = 3, 6 and 9 = 3 multiples of 3

Number of numbers in the set = 10

So it's a 3 in 10 chance

The fugacity of nitrogen gas in the nitrogen/methane gas mixture in bar in a Nitrogen/Methane gas mixture at 26 bar and 294 K if the gas mixture is 46 percent in Nitrogen is approximately 0 bar.

To determine the fugacity of nitrogen gas in a nitrogen/methane gas mixture, we need to use the virial  equation:

ln(φN) = (B1 * P + B2 * P^2) / RT

Where:

φN is the fugacity coefficient of nitrogen

B1 and B2 are the virial coefficients for nitrogen

P is the total pressure of the gas mixture

R is the ideal gas constant (8.314 J/(mol·K))

T is the temperature in Kelvin

Given data:

P = 26 bar

T = 294 K

B1 = -105.0 cm³/mol

B2 = -59.8 cm³/mol

First, we need to convert the pressure from bar to Pascal (Pa) since the ideal gas constant is in SI units.

1 bar = 100,000 Pa

So, P = 26 * 100,000 = 2,600,000 Pa

Now we can calculate the fugacity coefficient:

\(ln(φN) = (B1 * P + B2 * P^2) / RT\)

\(= (B1 * P + B2 * P^2) / (R * T)\)

\(= (-105.0 * 2,600,000 + (-59.8) * (2,600,000^2)) / (8.314 * 294)\)

\(= (-273,000,000 - 41,848,000,000) / 2,442.396\)

\(= -42,121,000,000 / 2,442.396\)

\(= -17,249,405.65\)

Finally, we can calculate the fugacity:

\(φN = exp(ln(φN))\)

\(= exp(-17,249,405.65)\)

≈ 0 (rounded to 0 decimal places)

Therefore, the fugacity of nitrogen gas in the nitrogen/methane gas mixture at 26 bar and 294 K is approximately 0 bar.

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Considering the histogram, it is found that the team scored more than 50 points 26 times.

An histogram is a graph that shows the number of times each element of x was observed.

Researching this problem on the internet, we have that:

12 + 11 + 3 = 26, hence the team scored more than 50 points 26 times.

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Answer:

194.25meters

Step-by-step explanation:

The distance around the running track is calculated as:

Perimeter of the first semi circle + Perimeter of the second circle +50m + 50m

Semi circle has a length or diameter of = 30m

r = 30/2 = 15m

Perimeter of a circle = 2πr

Hence for a semi circle = 2πr/2 = πr

Perimeter of the first semi circle = π × 15

= 47.123889804m

Perimeter of the second semi circle is the same hence,

π × 15 = 47.123889804m

The distance around the running track

= 47.123889804m + 47.123889804m + 50m + 50m

= 194.24777961m

Approximately= 194.25meters.

Using the Factor Theorem, the expression 3x² + 2 is factored as follows:

\(3x^2 + 2 = (\sqrt{3}x + i\sqrt{2})((\sqrt{3}x - i\sqrt{2}))\)

The Factor Theorem states that a polynomial function with roots \(x_1, x_2, \codts, x_n\) is given by:

\(f(x) = a(x - x_1)(x - x_2) \cdots (x - x_n)\)

In which a is the leading coefficient.

In this problem, the expression is:

3x² + 2.

The roots are found as follows:

\(3x^2 + 2 = 0\)

\(x^2 = -\frac{2}{3}\)

\(x = \pm \sqrt{-\frac{2}{3}}\)

\(x_1 = -i\sqrt{\frac{2}{3}}\)

\(x_2 = i\sqrt{\frac{2}{3}}\)

Hence the factored expression is:

\(3x^2 + 2 = \left(x + i\sqrt{\frac{2}{3}}\right)(x - 1\sqrt{\frac{2}{3}}\right) = (\sqrt{3}x + i\sqrt{2})((\sqrt{3}x - i\sqrt{2}))\)

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Answer: you didnt show any graphs but it should be plotted like this

Step-by-step explanation:

Answer:

8/10

Step-by-step explanation:

The measure of angle DEH is 60°. The solution is obtained using the properties of rhombus.

What is a rhombus?

The rhombus is a distinct variant of the parallelogram. The opposing sides and angles of a rhombus are parallel and equal.

We are given that the quadrilateral EFGH is a rhombus.

We know that the diagonals of a rhombus bisect each other at right angles i.e. 90°.

Therefore, Angle FDE = 90°

In triangle FDE, using angle sum property, we get

⇒ 30° + 90° + ∠FED = 180°

⇒ 120° + ∠FED = 180°

⇒∠FED = 60°

We know that the diagonals of the rhombus bisect the angles.

This means that ∠FED = ∠DEH

Therefore, ∠DEH = 60°

Hence, the measure of angle DEH is 60°.

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Panel data is a research design where observations are made on the same group of entities over time. Panel data provides several benefits over cross-sectional data such as it gives you more observations. The major advantage of using panel data over cross-sectional data is that

it allows you to analyze behavior across time and entities. With panel data, you can identify within and between variations which make it possible to analyze the changes that happen over time to each unit. Cross-sectional data provides a snapshot of a population in a particular period. It can tell you about differences in behavior between different entities in one particular period, but cannot tell you about changes in behavior over time.

However, panel data provides detailed information on how individual units (entities) change their behavior over time. This allows for the analysis of trends in data, while controlling for unobserved variables. Additionally, panel data analysis is able to control for some types of omitted variables that may affect the data.

In conclusion, panel data is advantageous in that it allows for a more thorough analysis of data, especially where there are unobserved variables. It provides a more detailed view of changes over time, which is not possible with cross-sectional data. This is mainly because panel data allows the researcher to analyze the behavior of individual entities over a given period.

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Answer:

Step-by-step explanation:

0,5 0.6 and 0.5 again? sorry i might be wrong if i am my apologies

Answer:

Buy 14 cupcakes

Step-by-step explanation:

4 - 9 - x

the pattern is plus 5

9+5=x

x=14

The required number of the cups next in the series is given as 14, the required series is given as 4, 9, 14, and so on.

Given that,
Two weeks ago, bought 4 cupcakes last week, and bought 9, a series to be determined.

A Series is defined as a group of numbers related or nonrelated to each other

Here,
According to the question,
2 weeks ago Number of cupcakes was 4,
1 week ago the number of cupcakes was 9.
The relationship formed can be given as y = --5x + 14,
put x = 0 we would get the number that comes next in the series,
So,
y = -5(0) + 14
y = 14

Thus, the required number of the cups next in the series is given as 14, the required series is given as 4, 9, 14, and so on.

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The correct answer is e(x) = np. The expected value for a binomial probability distribution is given by the formula e(x) = np, where n represents the number of trials and p represents the probability of success in each trial.

The expected value is a measure of the average or mean outcome of a binomial experiment. It represents the number of successful outcomes one would expect on average over a large number of trials.

The formula e(x) = np arises from the fact that the expected value of a binomial distribution is the product of the number of trials (n) and the probability of success (p) in each trial. This is because in a binomial experiment, the probability of success remains constant for each trial.

Therefore, to calculate the expected value of a binomial probability distribution, we multiply the number of trials by the probability of success in each trial, resulting in e(x) = np.

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