what is the density of 9 cm³ gold cube with 450 g in a mass?​

Answer:

x+5 is the right answer because it says 5 more than a number

Answer:

b

Step-by-step explanation:

hard to explain right here sorry man

The fundamental question addressed by the correlational method is whether two or more variables are related in some systematic way. So the correct option is D.

Correlational method is a research technique used to explore the relationship between two or more variables. In this method, researchers collect data on the variables of interest and analyze their patterns of association. The fundamental question addressed by the correlational method is whether two or more variables are related in some systematic way. This means that researchers are interested in exploring whether changes in one variable are associated with changes in another variable.

For instance, a researcher may be interested in exploring the relationship between stress and job performance. The researcher may collect data on the levels of stress and job performance in a sample of employees and then use statistical analysis to determine if there is a systematic relationship between the two variables. If the results show that higher levels of stress are associated with lower levels of job performance, then the researcher can conclude that there is a negative correlation between the two variables.

It is important to note that correlation does not imply causation. While a correlation between two variables indicates that they are related, it does not necessarily mean that changes in one variable are causing changes in the other variable. Therefore, researchers must be cautious when interpreting correlational data and should consider other factors that may be influencing the relationship between variables.

Therefore, the fundamental question addressed by the correlational method is whether two or more variables are related in some systematic way, and researchers must be cautious when interpreting correlational data and should consider other factors that may be influencing the relationship between variables.

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Answer: (-6, infinty)

Step-by-step explanation:

The height and radius of the cup are 4.41 cm and 2.07 cm respectively

To minimize the amount of paper used, we need to minimize the surface area of the cup. Let h be the height and r be the radius of the cone. Then we have:
\(Volume of cone = \frac{1}{3}  πr^{2} h = 36 cm^{3}\)

Solving for h, we get:
\(h = \frac{108}{(πr^2)}\)

Now we can express the surface area of the cone as:
\(Surface area = πr^2+ πr\sqrt{r^{2}+h^{2}  }\)

Substituting the expression for h, we get:

\(Surface area = πr^2+πr \sqrt{(r^{2} +(\frac{108}{(πr^2)^{2}) } )}\)

To minimize this function, we take its derivative with respect to r and set it equal to zero:
\(\frac{d}{dx} (Surface area) =  \frac{2πr - 108r }{[(r^2+(\frac{108}{πr^2}))^{0.5}  }] - \frac{108π}{r^2 }  = 0\)

Simplifying, we get:
\(2r^3 - \frac{108^2}{π} = 0\)

Solving for r, we get:
\(r = (\frac{54}{π})^{\frac{1}{3} }\)

Substituting this value into the expression for h, we get:
\(h = \frac{108}{\frac{54}{π} ^{(\frac{2}{3}π )} }\)

Thus, the height and radius of the cup that will use the smallest amount of paper are:
height = 4.41 cm
radius = 2.07 cm (rounded to two decimal places)

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Given:

An exterior angle of a triangle = 2x+30°

Two opposite interior angles are 33° and 41°.

To find:

The value of x.

Solution:

According to the exterior angle thereom, the exterior angle of a triangle is equal to the sum of opposite interior angles.

Using exterior angle theroem, we get

\((2x+30)^\circ=33^\circ+41^\circ\)

\((2x+30)^\circ=74^\circ\)

\((2x+30)=74\)

On further simplification, we get

\(2x=74-30\)

\(2x=44\)

\(x=\dfrac{44}{2}\)

\(x=22\)

Therefore, the value of x is 22.

Answer:

it is 12 yards .hnuhbuy yg7ygbv bghh

Answer:

The answer is b

Step-by-step explanation:

Bc it is just basicly the x and y axis

Answer:

34%.

Step-by-step explanation:

Chance he gets a hit of the weather is nice = 0.40 * 0.70 = 0.28.

or if its windy the chance  he gets hit is 0.10 * 0.20 = 0.02.

Chance its cold and he gets a hit = 0.2 * 0.2 = 0.04,

So the chance he gets a hit =  0.28 + 0.02 + 0.04

= 0.34 = 34%.

Answer:

9 + 1.35 + one-half (3.50 + 1.74)

Step-by-step explanation:

Sally pay

9 - adult ticket

1.35 - drink

1/2 ( 3.50 popcorn + 1.74 veggie cup)

= 9 + 1.35 + 1/2(3.50 +1.74)

The area of a regular pentagon is 58 ft2. thus option B is correct.

Apothem for a regular polygon is a line segment that originates from the center of the regular polygon and touches the mid of one of the sides of the regular polygon.

It is perpendicular to the regular polygon's side it touches.

Given; An apothem has a length of 4 feet and each side has a length of 5.8 feet.

The area of any regular polygon can be calculated as:

Area = number of sides (n) x 0.5 x length of sides (s) x apothem (a)

Area = 5 x 0.5 x 4 x 5.8

Area = 58

Hence, the area of a regular pentagon is 58 ft2. thus option B is correct.

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Answer:

B

Step-by-step explanation:

Slope of the line

(y2 - y1)/(x2 - x1)

(4-2)/(2-1)

2/1 =2

y = 2x

If John bought 9 bags and spent $5.00, using simultaneous equations, the number of each kind of bag he bought is 7 bags of popcorn and 2 bags of caramel corn.

Simultaneous equations are two or more equations solved simultaneously or concurrently.

When two or more equations are solved at the same time, they are described as simultaneous equations or a system of equations.

The cost of popcorn per bag = $0.50

The cost of caramel corn per bag = $0.75

The total number of bags bought = 9

The total cost of the 9 bags = $5

Let the number of bags of popcorn = p and the number of caramel corn = c

0.5p + 0.75c = 5 ... Equation 1

p + c = 9 ... Equation 2

Multiply Equation 2 by 0.5:

0.5p + 0.5c = 4.5  ... Equation 3

Subtract Equation 3 from Equation 1:

0.5p + 0.75c = 5

-

0.5p + 0.5c = 4.5

0.25c = 0.5

c = 2

p = 9 - 2

= 7

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Answer:

see explanation

Step-by-step explanation:

The sum of the angles around D = 360° , then

x = 360 - (114 + 90) ← equation to find x

  = 360 - 156

  = 204

Answer:

402?

2+ 8(50)?

not sure

Step-by-step explanation:

if so mark the brainliest!

Answer:

The first choice is correct. ii only.

Step-by-step explanation:

A rigid transformation changes the location of the shape without changing its size. There are three basic rigid transformations: reflections, rotations, and translations.

We are given these properties:

i. Increases or decreases the size of the figure

ii. Moves the location of the figure.

iii. Changes the shape of the figure.

Let's analyze each choice below:

O ii only . This is true. The other two properties are non-rigid transformations. Correct

O i and ii . This is not true. Increasing or decreasing the size of the figure is a non-rigid transformation. Incorrect.

O ii and iii. Changing the shape of the figure is a non-rigid transformation. Incorrect.

O i, ii, and iii. Properties i and iii are non-rigid transformation. Incorrect.

To solve this problem, we need to use some basic geometry concepts. First, we know that the diagonal of a unit square is the square root of 2, since the sides are of length 1.  The side length of the smaller square inscribed within a circle inscribed in a unit square is 1.

Next, we know that the circle inscribed in the square will have a diameter equal to the diagonal of the square, which is the square root of 2. The radius of the circle will therefore be half of the diameter, which is sqrt(2)/2.
Now we can use the radius of the circle to find the side length of the smaller square inscribed within it. If we draw the diagonal of the smaller square, it will be twice the radius of the circle, or sqrt(2). This is because the diagonal of the square passes through the center of the circle and therefore has a length equal to twice the radius.
We can then use the Pythagorean theorem to find the length of each side of the smaller square. If we let x be the side length of the smaller square, then we have:
x^2 + x^2 = 2
2x^2 = 2
x^2 = 1
x = 1
Therefore, the side length of the smaller square is 1, which makes sense since it is inscribed within a unit square.

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The t-distribution is a continuous kind of distribution. Hence, the correct option for this question is option a.

The t-distribution was developed by English statistician William Sealy Gosset with an alias 'Student'. Hence, it is also known as Student's t- distribution.

In probability and statistics, Student's t-distribution is said to be any member of a family of continuous probability distributions. For example when they arise while estimating the mean of a normally distributed population in situations where the population's standard deviation is unknown and the sample size is small. The t-distribution is symmetric and looks like a bell-shaped graph, just like the normal distribution.

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Answer:

2x - 25

Step-by-step explanation:

Since we don't know what the number is, just call it x. Twice x can be written as 2x and 25 fewer than 2x is 2x - 25.

The probability that the mean speed is between 42.5 and 43.5 miles per hour is 0.80 (rounded to 2 decimal places)The probability that the average speed is more than 44 miles per hour is 0.001 (rounded to 3 decimal places).

Given: The mean (average) speed of cars is 43 miles per hour and the standard deviation is 2.7 miles per hour. And, 55 cars are randomly selected and the mean speed is computed. Let it be X¯. The sampling distribution of X¯ follows the Normal distribution. The Mean of X¯ is mph. The standard deviation of X¯ is mph. Round to 2 decimals.

Now, to find the probability, we use the standard normal distribution for the sample size n > 30. Here, n = 55Mean of sampling distribution, μx¯ = μ = 43 mph standard deviation of sampling distribution, σx¯ = σ/√n = 2.7/√55 mphThe z-score formula is given by; z = (x - μx¯)/σx¯So,

1. To find the probability that the mean speed is between 42.5 and 43.5 miles per hour: We need to find;P(42.5 ≤ x ≤ 43.5). We will convert the limits into z-score to use standard normal table.

z1 = (42.5 - 43)/(2.7/√55) = -1.7z2 = (43.5 - 43)/(2.7/√55) = 1.7

Now, P(42.5 ≤ x ≤ 43.5) = P(-1.7 ≤ z ≤ 1.7. )From the standard normal table,

P(-1.7 ≤ z ≤ 1.7) = 0.8990 - 0.1010= 0.7980.

Therefore, the probability that the mean speed is between 42.5 and 43.5 miles per hour is 0.80 (rounded to 2 decimal places).

2. To find the probability that the average speed is more than 44 miles per hour:

We need to find;P(x > 44), We will convert the limits into z-score to use the standard normal table.

z = (44 - 43)/(2.7/√55) = 3.15. Now, P(z > 3.15) = 0.0009 (rounded to 3 decimal places).

Therefore, the probability that the average speed is more than 44 miles per hour is 0.001 (rounded to 3 decimal places).

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Answer:

The equation of the line in slope intercept form that passes through the point (-3, 5) and is parallel to y= - 2/3x is \(\mathbf{y=-\frac{2}{3}x+3 }\)

Step-by-step explanation:

We need to Write the equation of the line in slope intercept form that passes through the point (-3, 5) and is parallel to y= - 2/3x

The general equation in slope-intercept form is: \(y=mx+b\) where m is slope and b is y-intercept.

Finding Slope:

Both the equations given are parallel. So, they will be having same slope.

Slope of given equation y= - 2/3x is m = -2/3

This equation is in slope-intercept form, comparing with general equation  \(y=mx+b\) where m is slope , we get the value of m= -2/3

So, slope of required line is: m = -2/3

Finding y-intercept:

Using slope m = -2/3 and point (-3,5) we can find y-intercept

\(y=mx+b\\5=-\frac{2}{3}(-3)+b\\5=2+b\\ b=5-2\\b=3\)

So, we get b = 3

Now, the equation of required line having slope m = -2/3 and y-intercept b =3

\(y=mx+b\\y=-\frac{2}{3}x+3\)

The equation of the line in slope intercept form that passes through the point (-3, 5) and is parallel to y= - 2/3x is \(\mathbf{y=-\frac{2}{3}x+3 }\)

Answer:

\(\displaystyle y = -\frac{2}{3}x + 3\)

Step-by-step explanation:

5 = –⅔[–3] + b

2

\(\displaystyle 3 = b \\ \\ y = -\frac{2}{3}x + 3\)

Parallel equations have SIMILAR RATE OF CHANGES [SLOPES], so –⅔ remains as is.

I am joyous to assist you at any time.

Answer:

r=7/5

Step-by-step explanation:

Answer:

Step-by-step explanation:

I am sorry but please give detailed question

Statistical inference methods. These methods help us determine if findings from a sample can be generalized to the full population by using mathematical techniques to make inferences about population parameters based on sample data.

Mathematical methods that allow us to determine whether we can generalize findings from our sample to the full population are called statistical inference methods. These methods involve making inferences and drawing conclusions about population parameters based on sample data. Statistical inference helps us make statements about the population based on the information obtained from a representative sample. Common techniques in statistical inference include hypothesis testing, confidence intervals, and estimation.

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Answer:

| 32 - c | \(\leq\) 8

Step-by-step explanation:

c represents the cost of the medication

This absolute value inequality makes sure that the difference is less than or equal to 8, whether or not the medication is $8 more or less than the average.

Answer:[x - 32] <(with line under it) 8

Step-by-step explanation:

The statement suggesting that larger groups are more effective than smaller groups is false. Smaller groups tend to have better communication, efficiency, and individual participation.

The statement suggests that larger groups, specifically groups of twenty to thirty people with representatives from multiple subgroups, are more effective than smaller groups of six to eight people. However, this statement is generally considered false for several reasons:

Larger groups can face challenges in communication and coordination. With more members, it becomes more difficult to ensure effective information sharing, active participation, and clear decision-making. Small groups often have better communication and coordination due to fewer individuals involved.

Smaller groups tend to be more efficient and productive. In larger groups, there can be increased time spent on managing diverse opinions and reaching consensus, which can slow down the decision-making process and hinder productivity. Smaller groups can often make quicker decisions and accomplish tasks more efficiently.

Larger groups may result in reduced individual participation. Some members may feel less inclined to contribute or may be overshadowed by more dominant personalities. In smaller groups, each member can have a more significant impact and be actively engaged in the group's work.

Smaller groups tend to foster better group dynamics and cohesion. It is easier for members to develop strong relationships, trust, and a shared sense of purpose in smaller groups. Larger groups can struggle with maintaining cohesiveness and a sense of belonging.

While larger groups may have certain advantages, such as a broader range of perspectives and resources, the statement disregards the potential drawbacks of managing larger groups effectively. Overall, smaller groups often exhibit better communication, efficiency, and individual participation, making the statement false in general.

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The dependent variable in this study is the number of times the students got out of their seats over the course of 2 hours.

The independent variable is the variable that is being manipulated or controlled by the researcher.

It is the variable that is expected to cause a change in the dependent variable which is the variable being measured as the outcome or response to the manipulation of the independent variable.

In the given scenario, the independent variable is the group assignment based on the scores on the sensation-seeking test.

The researcher has divided the students into two groups based on their scores, and this grouping is being used as a way of manipulating or controlling the students' level of sensation-seeking behavior.

The researcher is interested in how this manipulation affects the students' behavior in terms of getting out of their seats.

The dependent variable is the number of times the students got out of their seats over the course of 2 hours.

This variable is expected to vary depending on the level of the independent variable, which is the group assignment based on the sensation-seeking test scores.

The researcher will measure the dependent variable for each group separately and then compare the results to determine if there is a significant difference between the two groups.

In summary,

The independent variable is the grouping of the students based on their scores on the sensation-seeking test and the dependent variable is the number of times the students got out of their seats over the course of 2 hours.

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