If you are smart then you know the answer : what is 3 x 4 - 5 - 6 + 99 - 5 x 5 x 100 x 50 x 575 x 2 - 100 + 399
If you get it you are smart :)

The correct option is a. A causal relationship cannot be concluded but the results can be extended to the population.

In an observational study, where the researcher observes and analyzes data without directly manipulating variables, finding a statistically significant relationship indicates an association between the variables. However, it does not establish a causal relationship. Other factors or confounding variables may be influencing the observed relationship.

Since causation cannot be inferred in observational studies, option (a) is the correct answer. The results can still be extended to the population because the sample represents the population of interest, but causality cannot be determined without further evidence from experimental studies or additional research methods.

To know more about population,

https://brainly.com/question/30887325

#SPJ11

Answer:

B. 180 degrees

Step-by-step explanation:

The straight angle represents 180°. Hence, option (B) is the correct answer.

Option B. The situation that would be more likely to show a constant rate of change would be B. The distance traveled by a truck driving at a constant speed compared with time.

This is the factor that is used to determine if there is a decrease or an increase in a given factor.

A good way to d this is by the use of time and speed to compare the distance that is being traveled.

Read more on rate of change here:

https://brainly.com/question/7869866

#SPJ1

Complete question

Which situation is most likely to show a constant rate of change?

A. The weight of a child compared with its age in months

B. The distance traveled by a truck driving at a constant speed compared with time

C. The cost of a new car compared with the number of tires it has

D. The outside temperature compared with the time of day

Answer:

(3x - 5)/4

Step-by-step explanation:

(3x - 5)/4 desribes five less than thrice a number x over four. Please let me know if this is what you mean.

Answer:

C 35 hours

Explanion

5.25+4.75=10 every two days

10/2=5 hours a day

5x7=35 hours a week

Please mark brainliest

Answer:

A

Step-by-step explanation:

Answer:

Yes, the answer is D

Step-by-step explanation:

AP3X

Answer:

2

Step-by-step explanation:

2x^2 + 8x + 8

factor the 2 out : 2(x^2 + 4x + 4)

2(x + 2)^2

x = -2

This can be verified by observing that the output signal y(t) does not depend on future input signals x(t + t0) for any value of t0. Therefore, the given system is causal.

The given system is not linear and time-invariant but it is causal. The reasons for this are explained below: The given system is not linear as the output signal is not proportional to the input signal.

Consider two input signals x1(t) and x2(t) and corresponding output signals y1(t) and y2(t). y1(t) = x1(t)sin(we*t) and y2(t) = x2(t)sin(we*t)

Now, if we add these input signals together i.e. x(t) = x1(t) + x2(t), then the output signal will be y(t) = y1(t) + y2(t) which is not equal to x(t)sin(we*t). Therefore, the given system is not linear. The given system is not time-invariant as it does not satisfy the principle of superposition.

Consider an input signal x1(t) with output signal y1(t).

Now, if we shift the input signal by a constant value, i.e. x2(t) = x1(t - t0), then the output signal y2(t) is not equal to y1(t - t0). Therefore, the given system is not time-invariant.

The given system is causal as the output signal depends only on the present and past input signals.

This can be verified by observing that the output signal y(t) does not depend on future input signals x(t + t0) for any value of t0. Therefore, the given system is causal.

Learn more about constant value here:

https://brainly.com/question/13028984

#SPJ11

To make a 49 pound bag of a mixture of peanuts and almonds that costs $6.85 per pound, the owner needs 15.98 pounds of peanuts and 33.02 pounds of almonds.

An algebraic expression is the combination of numbers and variables in expressing and solving a particular mathematical question. An equation is the equality of expressions.

Let x = pounds of peanuts in the mixture

y = pounds of almonds in the mixture

The owner wished to make a total of 49 pounds of mixture of peanuts ang almonds. Hence,

x + y = 49

x = 49 - y     (equation 1)

Bags of peanuts cost $2.2 per pound and bags of almonds cost $9.1 per pound, and the mixture should cost $6.85 per pound. Hence,

2.2x + 9.1y = 6.85(49)

2.2x + 9.1y = 335.65

Substitute equation 1 and solve for y.

2.2x + 9.1y = 335.65

2.2(49 - y) + 9.1y = 335.65

107.8 - 2.2y + 9.1y = 335.65

6.9y = 227.85

y = 33.02

pounds of almonds in the mixture = 33.02

Using equation 1, solve for x.

x = 49 - y

x = 49 - 33.02

x = 15.98

pounds of peanuts in the mixture = 15.98

Learn more about algebraic expression and equation here: brainly.com/question/3927786

#SPJ4

the depth perception cue based on the observation that parallel lines converge in the distance is that the depth perception cue based on the observation that parallel lines converge in the distance is known as linear perspective. This is a monocular cue, meaning it can be perceived with just one eye.

When looking at a scene, our brain uses the visual information provided by our eyes to determine depth and distance. Linear perspective is a cue that relies on the way that objects appear to shrink in size and converge towards a vanishing point as they move further away from the viewer. This is why parallel lines, such as the sides of a road or railway tracks, appear to meet at a point in the distance.

Linear perspective is a powerful visual cue that allows us to accurately perceive depth and distance in a scene. It is commonly used in art and architecture to create a sense of depth and realism, and is a crucial component of our visual perception.

To know more about distance, visit:

https://brainly.com/question/31713805

#SPJ11

Answer:

the function is quadratic because it have (2) turning points which is a sign of the ax² in rhe quadratic equation (ax²+bx+c)

Answer:

Isolate the variable by dividing each side by factors that don't contain the variable

x  =  11+3y/8

Step-by-step explanation:

Answer:

4(2x + y) = 11 + 7y

1. expand the brackets 8x + 4y = 11 + 7y

2. move +4y to the other side 8x = 11 + 3y

3. move 8 to the other side x= (11 + 3y)/8

Step-by-step explanation:

The ordered pair that is missing is (4, 6)

The clear graph added as an attachment

From the question, we have the following parameters that can be used in our computation:

The graph

From the graph, we have

(2, 3), (6, 9) and (8, 12)

This means that we have the ratio

x : y = 2 : 3

For x = 4, we have

4 : y = 2 : 3

This gives

4 : y = 4 : 6

By comparison, we have

y = 6

Hence, the misiing pair is (4, 6)

Read more about ordered pairs at

https://brainly.com/question/1528681

#SPJ1

Answer:

9 bracelets

Step-by-step explanation:

Divide 6/2 = 3 bracelets per hour

3 bracelets * 3 hours = 9 bracelets

Answer:

Step-by-step explanation:

bc i say so

The x-intercept of the line calculator is (-1,0) while the y-intercept is (0,-3).

To determine the x-intercept, let y = 0 and solve for x in the equation y = 3x - 1.

Substitute 0 for y in the equation.0 = 3x - 1

Add 1 to both sides1 = 3x

Divide both sides by 3x = 1/3

The x-intercept of the line is (1/3, 0).

To find the y-intercept, let x = 0 and solve for y in the equation y = 3x - 1.

Substitute 0 for x in the equation.y = 3(0) - 1y = -1

The y-intercept of the line is (0, -1).

Therefore, the x-intercept is (1/3, 0), and the y-intercept is (0, -1).

Therefore, The x-intercept of the line calculator is (-1,0) while the y-intercept is (0,-3). The calculation above supports the conclusion.

To know more about, line calculator, visit

https://brainly.com/question/30763905

#SPJ11

Answer:

proved

Step-by-step explanation:

n/6 -3=10

n/6=10+3

n/6=13

n=13x6

n=78

I hope this is the answer you're looking for

Answer:

i think it is b not 100% sure srry if its wrong.

Step-by-step explanation:

Answer:

3x+8=35

3x= 35-8

3x= 23

x=23/3

Answer:

D square root of 10 over 5

Step-by-step explanation:

sec means \(\frac{1}{x}\), so if sec of theta is \(\frac{\sqrt{10} }{2}\) in this situation then you can set those equal to one another to get x.

x=\(\frac{\sqrt{10} }{5}\)

cos is just another way to say x so what you got for x is your answer

The secant of theta is equal to the square root of 10 over 2 comma what is, then the value of cos is square root of 10 over 5 .The correct option is d.

For a right angle triangle, secant of the angle formed by the sides opposite to hypotenuse is equal to the ratio of Hypotenuse and the base of triangle,

Given the value of sec of θ

secθ = sqrt (10)/2

Then cos θ = 1/secθ

Plug the value, we get

secθ=  sqrt  (10) / 5

Thus, the correct option is d.

Learn more about secant.

https://brainly.com/question/23026602

#SPJ1

i) Xi(f) = 5rect(f/2007)e^(-j2πft) | ii) Xz(f) = 5rect((f-400)/2007) | iii) X3(f) = 1 - 3*5rect(f/2007) + 1400(X(f) * X(f)) | iv) X(f) = 5rect(f/5)

we'll use properties of the Fourier transform and the given function x(t) = 5sinc(2007).

i) For xi(t) = -4x(t-4):

Using the time shifting property of the Fourier transform, we have:

Xi(f) = X(f)e^(-j2πft)

Since x(t) = 5sinc(2007), the Fourier transform X(f) of x(t) is given by:

X(f) = 5rect(f/2007)

Thus, substituting the values, we have:

Xi(f) = 5rect(f/2007)e^(-j2πft)

ii) For xz(t) = e^(j400)lx(t):

Using the frequency shifting property of the Fourier transform, we have:

Xz(f) = X(f - f0)

Since x(t) = 5sinc(2007), the Fourier transform X(f) of x(t) is given by:

X(f) = 5rect(f/2007)

Substituting the value f0 = 400, we have:

Xz(f) = 5rect((f-400)/2007)

iii) For X3(t) = 1 - 3x(t) + 1400xlx(t):

Using the linearity property of the Fourier transform, we have:

X3(f) = F{1} - 3F{x(t)} + 1400F{x(t)x(t)}

Since x(t) = 5sinc(2007), the Fourier transform X(f) of x(t) is given by:

X(f) = 5rect(f/2007)

Using the Fourier transform properties, we have:

F{x(t)x(t)} = X(f) * X(f)

Substituting the values, we have:

X3(f) = 1 - 3*5rect(f/2007) + 1400(X(f) * X(f))

iv) For X(t) = cos(400ft)x(t):

Using the modulation property of the Fourier transform, we have:

X(f) = (1/2)(X(f - 400f) + X(f + 400f))

Since x(t) = 5sinc(2007), the Fourier transform X(f) of x(t) is given by:

X(f) = 5rect(f/2007)

Substituting the value f = 400f, we have:

X(f) = 5rect((400f)/2007)

Simplifying, we have:

X(f) = 5rect(f/5)

To sketch the magnitude spectrum, Xo(f), we plot the magnitude of the Fourier transform for each case using the given formulas and the properties of the Fourier transform.

Learn more about Fourier transform

brainly.com/question/1542972

#SPJ11

Answer:

-1.0

Step-by-step explanation:

dont no the explanation

The chi-square statistic is used to determine whether there are differences between two nominally scaled variables. Chi-Square is a statistical test used to compare two nominal variables to determine whether they differ.

The Chi-Square test is used to test for differences between two groups. When you want to compare groups or examine the relationship between two variables, this test is useful. The chi-square test is a method of statistical inference that can be used to compare observed frequencies with expected frequencies, allowing us to determine whether there is a meaningful difference between them. When the p-value obtained from a chi-square test is less than 0.05, it is generally considered statistically significant.

Learn more about Chi-Square

https://brainly.com/question/32595988

#SPJ11

The correct option is option (B) .

In a Multiple regression Model , the value of adjusted r-Squared is positive.

Adjusted r-Squared :

Adjusted r-squared is a modified version of r-squared adjusted for the number of predictors in the model. The fitted r-squared increases only if the new term improves the model beyond what would be expected by chance. This is reduced if the predictor happens to not improve the model more than expected.

The formula for r-squared,

Adjusted r-squared= 1 - [ ( 1 -r²)(n-1)/(n-k-1)]

where

N --> number of points in the data sample.

K --> number of independent regressors, i. number of variables in the model excluding or constant.

r²--> Indicates how well a term (data point) fits a curve or line.

r-squared values range from 0 to 1 and are commonly stated as percentages from 0% to 100%.

100% r-squared means that all movements in the security are completely explained by movements in the index.

To learn more about Adjusted r-Squared, refer :

https://brainly.com/question/29492414

#SPJ4

Answer:

3.81 km

Step-by-step explanation:

You first have to get the meters into kilometers. The conversion rate for this is 1 meter = 0.001 kilometer.

So multiply 670 by 0.001 which gives you 0.67.

Then add this to the amount he has already walked to get the total amount of kilometers he has walked.

Answer:

3.81 or

\(3 \frac{81}{100} \)

Step-by-step explanation:

explanation above

Answer:

Yes it is possible.

You need to change your mindset first.

If you look in the mirror everyday and call yourself ugly. Theres no way you are going to change the way you are.

But if you look in the mirror and be positive about yourself evantually you will start thinking diffirent about yourself.

Its all in the mindset.

Step-by-step explanation:

The number of different combination may a new car would have is 10 ways.

What is a combination in mathematics?

The combination is defined as "an arrangement of objects in which the order in which the objects are chosen is unimportant." The combination means "selection of things," where the order is irrelevant.

Given that there are 10 different options.

We have to choose one car.

So total number of combinations = \(^{10}C_1\)

                                                       = 10!/(9!)(1!)

                                                       = 10 ways

Hence, the number of different combination may a new car would have is 10 ways.

To learn more about combinations in mathematics, visit:

https://brainly.com/question/28065038

#SPJ4

In 10 ways the combination of a new car can be installed as followed by the rules of Permutation combination.

what is Permutation combination ?

Putting things or numbers in order is the definition of a permutation. Combinations are a method of choosing elements such as numbers or objects from a collection or set of elements without regard to the elements' order.

Solution:

Given that the car are 10 different options.

We have to choose one car.

So total number of combinations = 10C1

                                                      = 10!/(9!)

                                                      = 10 ways

Therefore, In 10 ways the combination of a new car can be installed.

To lean more about Permutation combination from the given link

https://brainly.com/question/1216161

#SPJ4

Answer:

The answer is six eighths

There's 8 letters in all and 6 of them are consonants (M, T, H, C, L, B)

Step-by-step explanation:

so all you have to do is take out all the vowel and count the letters that are consonant then you make that your top number than you put that over the amount of numbers in total

Answer:

\((\frac{15}{2},6)\)

Step-by-step explanation:

Hey, Grace! Pleasure to meet you.

To solve this problem, I would strongly suggest for you to use the midpoint formula.

I have attached an image below of the formula used for plugging in values.

Confused? Let me show you! :)

M means midpoint by the way...

M = \((\frac{8+7}{2},\frac{10+2}{2}) = (\frac{15}{2} ,6)\)

There you go! Let me know if you have any questions, and best of luck with the rest of your assignment.

Answer:

$113.1

Step-by-step explanation:

which is just 6.5% of 580 times 3

It s true that a text file contains bytes of data that represent characters from a particular character set such as Unicode or ASCII. The correct option to this question is "True".

The text file contains texts that are represented by Unicode or ASCII. The Unicode or ASCII represents how the numbers, text, or other commands are displayed and written in a text file.

To represent text digitally in the text file, characters have their own unique character representation bit-pattern. These bit-pattern have a combination of 1s and 0s. And these patterns are represented by character codes that are either Unicode or ASCII.

You can learn more about ASCII Code at

brainly.com/question/26307436

#SPJ4