BRAINLIEST AND 5 STARS AND A THANKS
You survey the students in your class to find out what kinds of movies they
like to watch. The students were given the following choices: Comedy (C),
Horror (H), Drama (D), Action (A), Romance (R).
The following were the results of your survey:
C, C, R, R, D, R, H, H, C, A, A, R, A, A, A, R, R, H, H, H, C, H, A, R, D, D, D, D, H, R

The content dimension of a message deals with the what of a message, while the relational dimension of a message deals with the how of a message is the correct answer.

Content dimensions is a generic concept to have multiple variants of a content node. It involves the information being explicitly discussed. The content repository supports any number of dimensions. The content dimension is the meaning of the actual message itself.

"Relational dimension of communication is a concept in which we have similar weight and impact as that of the message. This concept deals with the quality or nature of the relationships and networks."

Hence we can conclude that the content dimension of a message deals with the what of a message, while the relational dimension of a message deals with the how of a message is the correct answer.

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Hi there!

\(\large\boxed{x = -3}\)

Begin by distributing the 5:

5(2x) + 5(-12) = -90

Simplify:

10x - 60 = -90

Add 60 to both sides:

10x = -90 + 60

10x = -30

Divide both sides by 10:

x = -3

Answer:

x = -3

Step-by-step explanation:

Isolate the variable, x. Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS.

PEMDAS is the order of operations, and stands for:

Parenthesis

Exponents (& Roots)

Multiplication

Division

Addition

Subtraction

~

First, divide 5 from both sides of the equation:

5(2x - 12) = -90

(5(2x - 12))/5 = (-90)/5

2x - 12 = -90/5

2x - 12 = -18

Next, add 12 to both sides of the equation:

2x - 12 (+12) = -18 (+12)

2x = -18 + 12

2x = -6

Finally, divide 2 from both sides of the equation:

(2x)/2 - (-6)/2

x = -6/2

x = -3

-3 is your answer for x.

~

No. of teeth on the pinion(TP)=17.

Diametral pitch(pd)=8 teeth/in.

Rotational speed of the pinion(NP)=1120 rev/min or 1120 rpm.

Rotational speed of the gear(NG)=544 rev/min or 544 rpm.

To calculate:

No. of teeth on gear(TG) & theoretical centre to centre distance(C).

Solution:

We know that;

Diametral pitch(pd)=No. of teeth in the gear/Diameter of the gear

For pinion,

pd=TP/DP  

Pittiong the values in above eq.

8 teeth/in =17/DP    =>DP=17/8 in.

or DP=2.125 in.

Gear ratio(G)=(NP/NG)=(TG/TP)=(DG/DP)

=>(NP/NG)=(TG/TP)

=>1120/544 =TG/17 =>TG=35

No. of teeth the gear(TG)=35 {Ans}

Also from gear ratio formula,

(NP/NG)=(DG/DP)

=>1120/544=DG/2.125

=>DG=4.375 in.

In the next fig. I have drawn a rough diagram of the pinion and gear arrangement which will help you to understand how to calculate the centre to centre distance(C)

centre to centre distance,C=rP+rG {Where rP and rG are the radii of pinion and gear respectively}

=>C=(DP+DG)/2

Diameter =2*radius}

=>C=(2.125+4.375)/2 in. =3.25 in.

Theoretical centre to centre distance (C)=3.25 in.

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Answer:

Equation: \(4^2+b^2=17^2\)

can also be simplified to 16 + b^2 = 289 or b^2 = 273

The answer is "false". The interval [1, 2] contains all the real numbers between 1 and 2 including the endpoints.

An interval notation is used for representing the continuous set of real values. This is the shortest way of writing inequalities.

Intervals are represented within the brackets such as square brackets or open brackets(parenthesis).

The given interval is [1, 2]

The given statement is - 'the interval [1, 2] contains exactly two numbers - the numbers 1 and 2'

The given statement is 'false'.

This is beacuse, an interval consists set of all the real values in between the two values given.

So, according to the definition, there are not only the end values but also many real values in between them.

Thus, the answer is "false". The interval [1, 2] consists of all the real values between 1 and 2 including 1 and 2.

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Answer:

5

Step-by-step explanation:

First find out what is 90% of 50 by doing this 90÷100×50 which will give u 45

The statement "A sampling distribution is normal if either n≥30 or the population is normal" is true.

Hence option C is correct.

It is ideal for the population to be normal, a larger sample size (n≥30) can also result in a normal sampling distribution due to the Central Limit Theorem.

Therefore, a normal sampling distribution is not never possible as stated in option B, and it's not solely dependent on the population being normal as stated in option A.

Option D, stating that a normal sampling distribution is only possible if n≥30 is also not entirely true, as a normal population can still result in a normal sampling distribution for smaller sample sizes.

Hence the correct statement is,

"A sampling distribution is normal if either n≥30 or the population is normal".

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a. Colin's mean score is 13.4. b. Colin's new mean score is 12.9.

a) To calculate the mean score of Colin in the last 10 runs in cricket, we need to add up all the scores and divide by the total number of scores:

Mean = (18 + 12 + 6 + 1 + 21 + 10 + 21 + 18 + 20 + 7) / 10 = 13.4

Therefore, Colin's mean score is 13.4.

b) To calculate Colin's new mean score after scoring 9 runs on Sunday, we need to add the new score to the total runs and divide by the new total number of scores:

New mean = (18 + 12 + 6 + 1 + 21 + 10 + 21 + 18 + 20 + 7 + 9) / 11 = 12.9

Therefore, Colin's new mean score is 12.9.

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Greetings from Brasil...

Let's apply rule of 3:

  cups             oz

     2     -------   48

     5     -------    X

2 · X = 48 · 5

2X = 48 · 5

X = (48 · 5)/2

48 is the volume of soda, so just multiply that volume by 2/5 to get the new amount of soda...

The probability density function (pdf) of the largest of the five waiting times is given by: f(x) = 4/10^5 * x^4, where x is a real number between 0 and 10. The expected value of the largest of the five waiting times is 8.33 minutes.

The pdf of the largest of the five waiting times can be found by considering the order statistics of the waiting times. The order statistics are the values of the waiting times sorted from smallest to largest.

In this case, the order statistics are X1, X2, X3, X4, and X5. The largest of the five waiting times is X5.

The pdf of X5 can be found by considering the cumulative distribution function (cdf) of X5. The cdf of X5 is given by: F(x) = (x/10)^5

where x is a real number between 0 and 10. The pdf of X5 can be found by differentiating the cdf of X5. This gives: f(x) = 4/10^5 * x^4

The expected value of X5 can be found by integrating the pdf of X5 from 0 to 10. This gives: E[X5] = ∫_0^10 4/10^5 * x^4 dx = 8.33

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The most appropriate design would be experiment. Implementation of the design would be by selection of trees, then the application of fertilizer, followed by data collection and statistical analysis.

a) Most appropriate design: Experiment

The orchard owner wants to determine if a new formula of fertilizer produces more apples per tree compared to a current popular brand. To make a causal conclusion, an experiment would be the most appropriate design. In an experiment, the orchard owner would randomly assign the trees to receive either the new fertilizer formula or the current popular brand and then compare the number of apples produced. This allows the orchard owner to control for other variables and isolate the effect of the fertilizer on the number of apples produced.

b) Implementation:

Selection of trees: The orchard owner would randomly select a sample of trees from their orchard and divide them into two groups: the experimental group (receiving the new fertilizer formula) and the control group (receiving the current popular brand).

Application of fertilizer: Both the experimental and control groups would receive the same amount of fertilizer, but the experimental group would receive the new formula while the control group would receive the current popular brand.

Data collection: The orchard owner would measure the number of apples produced by each tree in both the experimental and control groups.

Statistical analysis: The orchard owner would use appropriate statistical tests to compare the number of apples produced by each group and determine if there is a significant difference between the two.

c) Benefit:

One benefit of this experimental design is that it allows the orchard owner to determine causality. By randomly assigning the trees to receive either the new fertilizer formula or the current popular brand, the orchard owner can be confident that any difference in the number of apples produced is due to the fertilizer and not other factors. This is important for making decisions about which fertilizer to use in the future.

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The difference in the dollar value of Assistantship (Stipend) between art and science fields with  standard errors is equal to 1.214.

Mean      24041.62203                 25952.36501

Sample mean difference between Assistantship (stipend) in arts and science is equal to

=  $25952.36501 - $24041.62203

= $1910.74298.

Hypothesized mean difference is 0 (there is no difference in stipend between the two fields).

Variance        621483.0801            615193.5853

Sample size    521                             479

Standard error of the difference is,

=√[(variance in arts / sample size in arts) + (variance in science / sample size in science)]

= √[(615193.5853 / 479) + (621483.0801 / 521)]

= $49.77

t-statistic

= (sample mean difference - hypothesized mean difference) / standard error of the difference

Substitute the values into the t-statistic formula,

⇒ t-statistic = ($1910.74298 - 0) / $49.77

⇒ t-statistic = 38.39

t-critical value for a two-tailed test with 992 degrees of freedom at a significance level of 0.05 is 1.9624.

t-statistic (38.39) > t-critical value (1.9624)

⇒Reject the null hypothesis that there is no difference in stipend between the two fields.

standard errors

= t-statistic / √(sample size)

= 38.39 / √(479 + 521)

= 38.39 /31.62

=1.214

Therefore,  the difference in the dollar value of Assistantship (Stipend) between these two fields is 1.214 standard errors away from the hypothesized difference.

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The set of variables that is most likely to have a cause-and-effect relationship is option C: the weight of a box and the postage rate we have to pay to ship the box to California.

Based on the given sets of variables, the set most likely to have a cause-and-effect relationship is:
B. The height of a person and the weight of a person

This is because there is a general correlation between a person's height and their weight, as taller individuals tend to have higher weights. While this is not an absolute rule, there is a stronger cause-and-effect relationship in this set compared to the other options.

This is because the weight of the box is a likely cause of the postage rate, as the heavier the box, the more postage we will have to pay to ship it. In options A and B, there may be a correlation between the variables, but it is less likely that there is a direct cause-and-effect relationship. In option D, the make of a car is not a likely cause of its mileage, as there are many other factors that can affect a car's mileage.

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The standard deviation is the mean of the sum of the squared deviations between each observation and the mean. The measure of dispersion that is the easiest to compute is the interquartile range.

The standard deviation is a statistic that expresses how much variance or dispersion there is in a group of numbers. While a high standard deviation implies that the values are dispersed over a wider range, a low standard deviation shows that the values tend to be close to the mean of the collection.

The term "standard deviation" (or "") refers to a measurement of the data's dispersion from the mean. A low standard deviation implies that the data are grouped around the mean, whereas a large standard deviation shows that the data are more dispersed.

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x in terms of m, M, g, and h is x = y^2 / (mgh). M is an additional variable introduced, which was not mentioned in the initial problem statement.

To solve the given equations for x in terms of m, g, and h, we will solve each equation step-by-step:

Equation 1: 6x = 9y + 5y^2 = mgh

Step 1: Rearrange the equation to isolate x:

6x = mgh - 9y - 5y^2

Step 2: Divide both sides by 6:

x = (mgh - 9y - 5y^2) / 6

Therefore, x in terms of m, g, and h is:

x = (mgh - 9y - 5y^2) / 6

Equation 2: mx = (m + M)y^2 / (m + M)gh

Step 1: Simplify the equation by canceling out (m + M) on both sides:

mx = y^2 / gh

Step 2: Divide both sides by m:

x = y^2 / (mgh)

Therefore, x in terms of m, M, g, and h is:

x = y^2 / (mgh)

Please note that in Equation 2, M is an additional variable introduced, which was not mentioned in the initial problem statement. If you have any specific values for M or any further information, please provide it, and I can adjust the solution accordingly.

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Relational databases are heavily based on the mathematical concept of: Set Theory. The correct option is (A).

Relational databases are based on the principles of set theory, which deals with sets of elements and their relationships with each other. In a relational database, data is organized into tables, with each table representing a set of related data.

The tables are then related to each other through the use of keys, which allow for the establishment of relationships between different sets of data. The principles of set theory also govern the use of operations such as union, intersection, and difference, which can be used to manipulate the data in the tables.

Therefore, the mathematical concept of set theory is a fundamental part of the design and use of relational databases.

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Answer:

720 000m³

Step-by-step explanation:

Formula for volume of pyramid with square base: length² × \(\frac{height}{3}\)

We can just apply the formula for this question.

Volume of pyramid = 150² × \(\frac{96}{3}\)

                                = 22 500 × 32

                                = 720 000m³

Answer:

It's 13 degrees

Step-by-step explanation:

Answer:

\(36\ feet\)

Step-by-step explanation:

Assume that the shadow of an object in this problem is proportional to the height of the object. One can form the following ratio to describe the objects in this problem,

\((height):(shadow)\)

As per the given problem, a (6) foot person casts a (1.7) foot shadow. Therefore, one can form the following ratio,

\(6:1.7\)

It is given that there is a lighthouse that has a shadow of (10.2) feet, one is asked to find its height. Use the parameter (x) to represent the unknown; since the ratios are related, one can form a proportion to solve for(x).

\(6:1.7=x:10.2\)

Cross products,

\((1.7)(x)=(6)(10.2)\)

Simplify,

\(1.7x=61.2\)

Inverse operations,

\(1.7x=61.2\)

\(/1.7\)

\(x=36\)

Answer: Simplification of Fractions.

Step-by-step explanation:

Answer:

the answer is c

Step-by-step explanation:

8*9 = 72

u *v = 3 *4 = 12

72-12 = 60

3 *2 = 6/2 = 3

60 +3 =  63

∠g and ∠h are complementary angles and ∠g and ∠h are acute angles are true statements from the given information

Two angles are given.

∠g = (2x-90)°

∠h = (180-2x)°

We have to find the statement which is true about the angles g and h.

If both angles are greater than zero.

Complementary angles add up to 90 degrees

i.e., ∠g and ∠h are complementary if ∠g + ∠h = 90°.

Substituting the given values:

∠g + ∠h

= (2x-90)° + (180-2x)° = 90°

Thus, ∠g and ∠h are complementary angles.

and both the angles are less than 90 degrees so we can tell that angles ∠g and ∠h  are acute.

So the statement ∠g and ∠h are acute angles is also true

Hence, ∠g and ∠h are complementary angles and ∠g and ∠h are acute angles are true statements

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The disposable income is 4,000, consumption is 3,500, government purchases is 1,000, and taxes minus transfers are 800, national saving is equal to. Therefore, S = 4,000 - 3,500 - 1,000 = 500.Hence, option b is correct.

National savings (S) can be calculated as: S = Y - C - G, where Y is income, C is consumption, and G is government purchases.

To determine S, we must first calculate Y.Y = C + I + G + NX, where I is investment, and NX is net exports.

The formula for calculating national savings is as follows: National savings (S) = Y - C - G

The following is a numerical representation of the above data:Y = C + I + G + NX = 3,500 + I + 1,000 + NX

Disposable income is 4,000, while taxes minus transfers are 800. Therefore, Y + TR - T = C + S.

Now, let's compute this value.

Substitute the given values in the equation4,000 + TR - 800 - T = 3,500 + S600 - T = S + 3500 - 1000S = 500

Substitute the value of S in the formula:S = Y - C - G

Therefore, S = 4,000 - 3,500 - 1,000 = 500Hence, option b is correct.

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Answer:

105

Step-by-step explanation:

105

(a) The conjugate harmonic function, v = 4x²y. ; (b) The required  integral into real and imaginary parts: 1/2 + 4i/4 - i/2 + 4i/4= 1/2 + i.

Given function is

u(x,y) = -8x^3y + 8xyz.

To prove that the function is harmonic, we need to show that it satisfies Laplace’s equation, that is:

∇²u(x,y) = 0, where ∇² is the Laplacian operator which is given by:

∇² = ∂²/∂x² + ∂²/∂y².∂u/∂x = -24x²y + 8yz ----(1)

∂u/∂y = -8x³ + 8xz ----(2)

∂²u/∂x² = -48xy∂²u/∂y²

= -24x²

By substituting equation (1) and (2) into Laplace’s equation, we get:

LHS = ∂²u/∂x² + ∂²u/∂y²

= -48xy + (-24x²)

= -24x(2y+x)

RHS = 0, therefore, the given function is harmonic.v, the conjugate harmonic function:We have that:

v = ∫(8x³ - 8xyz)dy + C1

= 4x²y - 4xy²z + C1

But ∂v/∂x = 8x² - 4y²z  and

∂v/∂y = 4x² - 4xyz

Comparing these expressions with equation (1) and (2) respectively, we get:

z = 0 and 8yz = -8xyz

Therefore, the conjugate harmonic function, v = 4x²y.

Sc(y+x-4ix³)dz along c where c is represented by:

(i) the straight line from Z = 0 to Z = 1+i.

(ii) Cz: along the imaginary axis from Z = 0 to Z = i.

Here, we need to find the value of Sc(y+x-4ix³)dz along the straight line from Z = 0 to Z = 1+i.

let z = x + iy, then x = Re(z) and y = Im(z)

hence, z = 0, when x = 0 and y = 0

Similarly, z = 1 + i, when x = 1 and y = 1

Let f(z) = y + x - 4ix³

then,

Sc(y + x - 4ix³)dz = ∫(1+i)₀ (y + x - 4ix³)dz

∴ Sc(y + x - 4ix³)dz = ∫(1+i)₀ [(x+y) + 4i(x³)](dx + idy)

∴ Sc(y + x - 4ix³)dz = ∫₁⁰ [(x + y) + 4i(x³)]dx + i ∫₁⁰ [(y - x) + 4ix³]dy

Now, we need to split the above integral into real and imaginary parts.

∴ Sc(y + x - 4ix³)dz = ∫₁⁰ (x+y)dx + 4i ∫₁⁰ (x³)dx + i ∫₁⁰ (y-x)dy + 4i ∫₀¹ (x³)dy

= ∫₁⁰ (x+y)dx + 4i/4 [x⁴]₁⁰ + i ∫₁⁰ (y-x)dy + 4i/4 [y²]₁⁰

= 1/2 + 4i/4 - i/2 + 4i/4

= 1/2 + i

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Answer:

curved lines

Step-by-step explanation:

because a linear persctive is a straight line or perspective where in which a curved line isnt