5. Find the value x. (3pts.)
6x - 18
3x + 18
someone help

The correct option is option (C) .

Cluster Sampling is a type of probability sampling and other options are non- probability sampling examples .

Sampling :

Sampling is defined as a technique that selects individual members or subsets from a population to help determine characteristics of the population as a whole.

Croach and Housden postulate that a sample is a finite number taken from a large group for testing and analysis, and that the sample can be taken as representative of the group as a whole.

There are two main types of sampling:

i) probability sampling

ii) Non-probability sampling

A) probability sampling:

It is defined as the sampling technique which researchers use a related method to draw probability theory samples from a larger population.

The most important requirement for probabilistic sampling is that everyone in the population has a known equal chance of being selected.

Probability Samples:

1. Stratified Sampling: Stratified sampling is a type of sampling technique that divides the total population into smaller groups or strata to complete the sampling process. Hierarchies are formed based on some common characteristics of demographic data.

2. Cluster Sampling: Cluster sampling is a probabilistic sampling technique in which researchers divide a population into multiple groups (clusters) for research purposes. Researchers then select random groups using simple sampling techniques for data collection and data analysis.

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Answer:

m = 1\(\frac{1}{7}\), y = 1\(\frac{1}{7}\)x + 10

Step-by-step explanation:

The equation of a line is y = mx + c where m is the slope and c is the y-intercept. I will be calculating the slope using the points (7, 2) and (0, 10)

m = \(\frac{rise}{run}\)

   = \(\frac{2-10}{7-0}\)

   = \(\frac{8}{7}\)

   = 1\(\frac{1}{7}\)

Based on the graph, the y-intercept is 10. Thus, the equation of the line is 1\(\frac{1}{7}\)x + 10.

The runner should run for roughly around 54 minutes.

To find how many minutes must the runner run:

Minutes required are:

Therefore, the runner should run for roughly around 54 minutes.

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Answer:

20.25

Step-by-step explanation:

I hope this helps

The linear function is y = (-1/2)x + 4.

What is a linear function?

A linear function whose graph is a straight line and which is represented by an equation of the form y = ax + b where a and b are constants, a does not equal zero, and x is any real number.

Here, we have

Given,

A linear function has an x-intercept of 8 and a y-intercept of 4.

So, The two points on the line are (8, 0) and (0, 4).

Now, slope(m) = (4 - 0)/(0 - 8).

slope(m) = -4/8.

slope(m) = -1/2.

As it has a y-intercept of 4 it is the value of b, In y = mx + b.

Hence, the linear function is y = (-1/2)x + 4.

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Answer:

1.25MilesPerMinute

Step-by-step explanation:

Answer:

ok. Where is the Question

Answer:

shown below

Explanation:

so first you can graph a dot at (2,-1), since it must go through that line. Then you can use the slope, 3, to figure out the next dot. The slope 3 can be put into a fraction, liking like 3/1. Then you use rise/run from your point (2,-1). You go up 3, and right 1. Using that, your next point is (3,2). Plot that dot, and then use a straight edge to draw your line. It looks like how it is in the picture.

For a equation of the form:

m = slope

b = y-intercept

for:

(5)

(7)

equation of linear function will be y = -2/7x + 2. Graph is attached below.

A linear equation is an algebraic equation of the form y=mx+b, where m is the slope and b is the y-intercept, and only a constant and a first-order (linear) term are included. Sometimes, the aforementioned is referred to as a "linear equation of two variables," with y and x serving as the variables.

Given, The y-intercept is 2. The function is positive for x < 7. The function is decreasing for all values of x.

Thus the x-intercept of linear function will be 7

So two points on the line are (0, 2) and (7, 0)

The slope-intercept form of the equation of a line

y=mx+b,

where m is the slope

b is the y-intercept

since, slope = (y - y')/(x -x')

In our case,

Slope = (0-2)/7-0

Slope = -2/7

Thus, equation of line,

y = -2/7x + 2

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A. Prospective observational studies involve collecting data from participants before an event or outcome occurs, while retrospective observational studies collect data after the event has already taken place.

A prospective observational study is a type of observational study that involves collecting data from participants before an event or outcome occurs. This type of study is used to predict and measure outcomes in the future.

In this type of study, the researcher can control the variables, such as when and how the data is collected, and can also observe the effects of any changes in the environment.

On the other hand, a retrospective observational study is a type of observational study that involves collecting data after an event or outcome has already taken place. This type of study is used to study the causes of a given outcome.

In this type of study, the researcher looks back in time and collects data from the past. This type of study is more limited than a prospective observational study, since the researcher cannot control the variables of the study or observe any changes in the environment.

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Answer:

About $3.90

Step-by-step explanation:

6.37/1.65

The length of piece of wood now will be;

⇒ 0.72 meters

What is Addition?

A process of combining or adding two or more numbers is called addition.

Given that;

A carpenter bought a piece of wood that was 0.42 meters long.

And, She sawed 0.3 meters off the end.

Here,

A carpenter bought a piece of wood that was 0.42 meters long.

And, She sawed 0.3 meters off the end.

Hence, The length of piece of wood now = 0.42 + 0.3 meter

                                                                = 0.72 meters

Thus, The length of piece of wood now = 0.72 meters

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Answer: An 80

Step-by-step explanation: 80+82+75+78+85=400

400 divided by 5 =80

Step-by-step explanation:

The slope of a line characterizes the direction of a line. To find the slope, you divide the difference of the y-coordinates of 2 points on a line by the difference of the x-coordinates of those same 2 points .

Answer:

To find the slope, you will have to divide the difference of the y-coordinates of 2 points on a line by the difference of the x-coordinates of those h same 2 points .

Step-by-step explanation:

The values of the unknown variables in the given figure are :

a = 20, b = 140°, x = 120° and y = 60°.

Given two parallel lines which are intersected by two transversal lines.

Here the pair of angles of measures 100 - 3a and a + 20 are corresponding angles.

By corresponding angles theorem, corresponding angles formed by two parallel lines and a transversal is congruent.

So,

100 - 3a = a + 20

-4a = -80

a = 20

So, a + 20 = 20 + 20 = 40°

Now, b and a + 20 are linear pair of angles and are thus supplementary.

b + a + 20 = 180

b = 180 - 40 = 140°

Now since, x and 120° are vertically opposite angles, they are congruent to each other.

So, x = 120°

Since x forms linear pair with the angle which is alternate interior angle with y, the angle = 180 - 120 = 60°

By the alternate interior angles theorem, y is equal to it's alternate interior angle which is of measure 60°.

So, y = 60°

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The events are dependent "d". And the probability of selecting a number less than 6 both times is 5.3%

The probability of an event without replacement implies that once an item is drawn, then we do not replace it back to the sample space before drawing another item.

The events are dependent since the probability of selecting a number on the second draw will depend on what number was selected on the first draw.

Total possible outcome = 20

numbers less than 6 = 5

probability of both selected are less than 6 = 5/20 × 4/19

probability of both selected are less than 6 = 1/19

1/19 in percentage = 1/19 × 100 = 5.3%.

Therefore, the events are dependent "d". And the probability of selecting a number less than 6 both times is 5.3%.

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By using regression analysis, We can say that the number of adult deer and annual rainfall are positively related to the number of fawns in the upcoming Spring season, while the severity of winter is negatively related to the number of fawns.

To interpret the slopes of the significant predictors for Fawn Count, we need to perform a multiple regression analysis on the data. Assuming that Fawn Count is the dependent variable and Adult Count, Annual Rain in Inches, and Winter Severity are the independent variables, we can find the coefficients for the regression equation.

Performing the analysis, we get the following regression equation:

Fawn Count = 0.08 * Adult Count + 0.11 * Annual Rain in Inches - 0.26 * Winter Severity + 1.46

Interpreting the slopes

The slope for Adult Count is 0.08, which means that for every one-unit increase in Adult Count, we can expect a 0.08 increase in Fawn Count, holding all other predictors constant.

The slope for Annual Rain in Inches is 0.11, which means that for every one-unit increase in Annual Rain in Inches, we can expect a 0.11 increase in Fawn Count, holding all other predictors constant.

The slope for Winter Severity is -0.26, which means that for every one-unit increase in Winter Severity, we can expect a 0.26 decrease in Fawn Count, holding all other predictors constant.

Therefore, we can say that the number of adult deer and annual rainfall are positive while the severity of winter is negative.

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

" You move out into the country and you notice every Spring there are more and more Deer Fawns that appear. You decide to try and predict how many Fawns there will be for the up coming Spring. You collect data to, to help estimate Fawn Count for the upcoming Spring season. You collect data on over the past 10 years.

x1 = Adult Deer Count

x2 = Annual Rain in Inches

x3 = Winter Severity

Where Winter Severity Index

1 = Warm

2 = Mild

3 = Cold

4 = Freeze

5 = Severe

Required:

Interpret the slope(s) of the significant predictors for Fawn Count (if there are any)

Fawn count Adult Count Annual Rain in Inches Winter Severity

2.9000001   9.19999981   13.19999981                             2

2.4000001     8.69999981    11.5                                         3

2                       7.19999981    10.80000019                    4

2.29999995         8.5                   12.30000019                 2"--

Answer:

We can use the formula A = P(1 + r/n)^(nt) to find out how long it takes for William's money to triple, where A is the final amount, P is the principal, r is the interest rate, t is the time in years and n is the number of times the interest is compounded per year.

A = P(1 + r/n)^(nt) = 550(1 + 0.02/12)^(12*t) = 3P

Solving for t we get

t = (ln(3)/ln(1+0.02/12))/12 = 49.41

For Violet's account, using the formula A=Pe^(rt) where A is the final amount, P is the principal, r is the interest rate, t is the time in years, we get:

t = ln(3) / (2 * e^-2) = 49.41

Therefore, it will take approximately 49.41 years for William's money to triple, and 49.41 years for Violet's money to triple.

So the difference in time is 0.

The paper clip costs $0.05 and the folder Costs $1.00 more, which is $1.05. Together, they add up to the total of $1.10.

Let's solve this problem step by step:

Let's assume the cost of the paper clip is x dollars.

According to the information given, the folder costs $1.00 more than the paper clip, so the cost of the folder would be (x + $1.00).

The total cost of the folder and the paper clip is $1.10, so we can write the equation:

x + (x + $1.00) = $1.10

Combining like terms, we have:

2x + $1.00 = $1.10

Subtracting $1.00 from both sides of the equation, we get:

2x = $0.10

Dividing both sides by 2, we find the value of x:

x = $0.10 / 2

x = $0.05

Therefore, the paper clip costs $0.05.

In summary, the paper clip costs $0.05 and the folder costs $1.00 more, which is $1.05. Together, they add up to the total of $1.10.

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Step-by-step explanation:

YELLOW TRIANGLE:

\( \sin(30) = \frac{x}{12} \\ x = 12 \sin(30) = 6\)

PURPLE TRIANGLE:

Since one of the angle is 45°, x = BC = 6

To prove:

\( \tan(45) = \frac{bc}{x} \\ bc = x \tan(45) = 6 \tan(45) = 6\)

PINK TRIANGLE:

\( \tan(60) = \frac{bc}{y} \\ y = \frac{bc}{ \tan(60) } \\ = \frac{6}{ \tan(60) } \\ = 2 \sqrt{3} \)

Answer:

Ray DB

Step-by-step explanation:

The graph shows Ray BD.  You name a ray starting at it end point.

For the 1st equation,

Answer:

A. 2x + y = 20

Hope you could get an idea from here.

Doubt clarification - use comment section.

Answer:

Step-by-step explanation:

Answer:

Step-by-step explanation:

Let’s find the area of the circle.

A = 3.14(7)^2 = 153.86

Now the area of the square:

14•14=196

Now we find the area of the shaded region:

196 - 153.86 = 42.14

the shaded region is 42.14 cm

Answer:

72 miles per day

Step-by-step explanation:

Step one data

we are told that Dani rode for 10 hours per day for 8 days

hence per day, the time taken is = 10 hours

Also,

Hence the average distance covered per day is

=total number of miles/total number of days

=576/8= 72 miles per day

Answer:

c & d

Step-by-step explanation:

Trust me on this one can i have brainiest

Option {D} : 0 represents the correct alternative.

A decimal is a number that consists of a whole and a fractional part.

Given are the decimal numbers.

Option {D} : 0 represents the correct alternative.

Therefore, Option {D} : 0 represents the correct alternative.

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Answer:

The expanded form of this expression should be 7.5-10n-20.

Step-by-step explanation:

Note: I am not 100% on this answer, so if this is not the response you were looking for, do not hesitate to tell me. Hopefully this answer helps though :)

Answer:

-2.5(-3+4n+8)

7.5-10n-20

-22.5-10n