Helppppppppp pleassseee

Answer:

3x^2+5x-2

Step-by-step explanation:

(3x-1)(x+2)

3x^2-x+6x-2

3x^2+5x-2

In the given experiment, the researchers and the subjects would not know which medication the subjects are taking, which will help to ensure that the results are accurate and unbiased.

Double-blind means that neither the subjects nor the researchers conducting the experiment will know which group each subject is assigned to. This is important to reduce the chances of bias influencing the results. For example, the doctors may be more likely to report more positive results in the group taking the new medication if they know which group the subject is in. By remaining blind to the group assignment, the doctors can objectively report the results without bias.

Therefore, in the given experiment, the researchers and the subjects would not know which medication the subjects are taking, which will help to ensure that the results are accurate and unbiased.

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The choice of measure depends on the characteristics of the data and the purpose of the analysis.

The measure commonly used to describe the center of the data is the arithmetic mean or average. The arithmetic mean is calculated by summing all the data points and dividing the sum by the total number of data points. It provides a representative value that balances the contributions of all the data points.

Another measure of center is the median, which represents the middle value when the data is arranged in ascending or descending order. Unlike the mean, the median is not affected by extreme values or outliers, making it a robust measure of central tendency.

Additionally, there is the mode, which represents the most frequently occurring value in the dataset. It can be useful in cases where identifying the most common observation is important.

Each measure has its strengths and limitations, and researchers need to consider the nature of the data and the research question at hand to determine the most appropriate measure of center

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Answer:

If two chords intersect in a circle, then the product of the segments of one chord equals the product of the segments of the other chord.

6(3x) = 4(4x + 1)

18x = 16x + 4

2x = 4

x = 2

Given:

The given function is,

The objective is to plot the graph and find the domain and range in set notation.

Explanation:

FIrst, the graph fo the function will be,

To find domain:

Domain represents the interval of the graph from negative x-axis to positive x-axis.

It can be observed from the graph that domain of the function lies in the interval of all real numbers as,

To find range:

Range represents the interval of the graph from negative y-axis to positive y-axis.

It can be observed from the graph that the range o the function lies in the interval of all real numbers as,

Hence,

The domain of the function is D {x│x∈ℝ}.

The range of te function is R {y│y∈ℝ}.

Rested numbers in group is 33 out of 76.

A percentage is expressed as a number or ratio that can be expressed as fraction of 100. It is denoted by % symbol.

Total numbers in a group = 76.

44% of them were rested.

That is 44% of 76.

To find how many are rested we have to find the value in numbers.

Convert 44% of 76 to numbers.

For this, it can be written as

\(\frac{44}{100} *76\) = 33.44

Therefore 44% of 76  ≅ 33 numbers.(approximately)

Hence, rested numbers in group is 33.

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Answer:

Dude, so true-

Step-by-step explanation:

Answer:

???

Step-by-step explanation:

Give me a question and I can help you

Answer:

See below

Step-by-step explanation:

\(( \sin \theta - \cos \theta)( \sin \theta + \cos \theta) = 1 - 2 { \cos}^{2} \theta \\ \\ LHS = ( \sin \theta - \cos \theta)( \sin \theta + \cos \theta) \\ \\ = \sin^{2} \theta - \cos^{2} \theta \\ \\ =1 - \cos^{2} \theta - \cos^{2} \theta \\( \because \sin^{2} \theta =1 - \cos^{2} \theta) \\ \\ = 1 - 2 { \cos}^{2} \theta \\ = RHS\)

Thus proved

Step-by-step explanation:

\( \cos( \beta ) + \sin( \beta ) \tan( \beta ) = \sec( \beta ) \)

\( \cos( \beta ) + \sin( \beta ) \frac{ \sin( \beta ) }{ \cos( \beta ) } \)

\( \cos( \beta ) + \frac{ \sin {}^{2} ( \beta ) }{ \cos( \beta ) } \)

\( \frac{ \cos {}^{2} ( \beta ) }{cos \beta } + \frac{ \sin {}^{2} ( \beta ) }{ \cos( \beta ) } \)

\( \frac{1}{ \cos( \beta ) } \)

\( = \sec( \beta ) \)

\(\cos \beta + \sin \beta \tan \beta \\\\= \cos \beta + (\tan \beta \cos \beta) \tan \beta \\\\=\cos \beta + \tan^2 \beta \cos \beta \\\\=\cos \beta( 1+ \tan^2 \beta)\\\\= \cos \beta \sec^2 \beta\\\\= \dfrac 1{\sec \beta} \times \sec^2 \beta \\\\= \sec \beta\)

Step-by-step explanation:

1st one is x>-16

second one is x<-16

here

in second option

x/-4 > 4

or, -x/4>4

or, -x>16

this is incorrect cause how can a negative number possibly be greater than a positive number

so we trun it to

x<-16

niw

last option is x>16

Answer:

10/13 ≤ x < 18/13

Step-by-step explanation:

-1 ≤ 13x - 11 < 7

If a ≤ u < b then a ≤ u and u < b

⇒ -1 ≤ 13x - 11  and  13x - 11 < 7

-1 ≤ 13x - 11

Add 11 to both sides:  10 ≤ 13x

Divide both sides by 13:  10/13 ≤ x

13x - 11 < 7

Add 11 to both sides:  13x < 18

Divide both sides by 13:  x < 18/13

Combine the intervals

10/13 ≤ x < 18/13

The distance between two points in three-dimensional space is a measure of the separation between the two points. In this case, the two points are the center of a sphere and a point that the sphere passes through.

To find the distance, we can use the distance formula in three dimensions, which is an extension of the distance formula in two dimensions. The distance formula is:

d = √((x1 - x2)^2 + (y1 - y2)^2 + (z1 - z2)^2)

where (x1, y1, z1) is the center of the sphere and (x2, y2, z2) is the point that the sphere passes through. The square root of the sum of the squares of the differences between the corresponding coordinates gives the distance between the two points.

In this problem, the center of the sphere is not given, so it is not possible to calculate the distance between the sphere and the point. The center of the sphere is a crucial piece of information needed to solve this problem.

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The graph of the function f(x)=x/3+1 and g(x)=6x/3 +1 is attached below.

What is a function?

A unique kind of relation called a function is one in which each input has precisely one output. In other words, the function produces exactly one value for each input value. The graphic above shows a relation rather than a function because one is mapped to two different values. The relation above would turn into a function, though, if one were instead mapped to a single value. Additionally, output values can be equal to input values.

The x-values are input into the function machine. The function machine then performs its operations and outputs the y-values. The function within can be any function.

f(x)=x/3+1

Intercept points are (-1/3, 1)

g(x)=6x/3 +1

Intercept points are (-1/2, 1)

Hence, The graph of the function is attached below.

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Answer:

I believe it is C i am very sorry if it's wrong

Answer:C.

Step-by-step explanation:

Answer:

2 1/22.

Step-by-step explanation:

Dado que un número mixto es aquel que representa una fracción mediante un número entero y una fracción combinados, figurando ambos como representación del valor del número, para convertir a número mixto la fracción 45/22 se debe realizar el siguiente calculo:

45 / 22 = X

2.045 = X

0.045 = 1/22

Así, 45/22 representado como número mixto es igual a 2 1/22.

Answer:

bRAINELIST PLS! A useless mod deleted all my answers for no reason

Step-by-step explanation:

6 2/3 * 4 3/4

20/3 * 19/4

380/12 = 31.6666666666666...

Answer:

25 5/12

Step-by-step explanation:

6*4 = 24

8/12 * 9/12 = 17/12

= 25 5/12

Hope this helps and can you pls mark me brainliest?:) need to get to expert

Answer:

-5

Step-by-step explanation:

h(x)=3x+1

Let x = -2

h(-2) = 3*-2 +1

        = -6+1

       = -5

Answer:

2y = 7

y = 3 1/2

Step-by-step explanation:

Answer:

A and D are correct. This is a parallelogram, which is a quadrilateral. B is not correct because not all the sides are congruent. C is not correct. E and F are not correct because this parallelogram does not have any right angles.

Answer:

Similarity: sinusoidal function has the same general shape as a sine or cosine function.      Differences: y = sin x and y = cos x

Step-by-step explanation:

Answer:

0.76 = 76% probability that a tourist visited at least one of these places

Step-by-step explanation:

I am going to solve this question using the probabilities as Venn sets.

We have that:

Event A: Tourist visited Beinjing.

Event B: Tourist visited Xi'an.

61 percent of the tourists to China visited the Forbidden City, the Temple of Heaven, the Great Wall, and other historical sites in or near Beijing.

This means that \(P(A) = 0.61\)

33 percent visited Xi'an with its magnificent terracotta soldiers, horses, and chariots, which lay buried for over 2000 years.

This means that \(P(B) = 0.33\)

18 percent of the tourists went to both Beijing and Xi'an.

This means that \(P(A \cap B) = 0.18\)

What is the probability that a tourist visited at least one of these places?

This is

\(P(A \cup B) = P(A) + P(B) - P(A \cap B)\)

We already found these values. So

\(P(A \cup B) = 0.61 + 0.33 - 0.18 = 0.76\)

0.76 = 76% probability that a tourist visited at least one of these places

Answer:

2 2/4 or 2 1/2

Step-by-step explanation:

3-1=2

3/4-1/4=2/4

2/4=1/2

Answer:

Circumference: 12π + 8 cm,

Area: 48 ( cm )^2

Step-by-step explanation:

This figure is composed of circles, squares, and semicircles. As you can see, the squares indicate that each semicircle should have ( 1 ) the same area, and ( 2 ) the same length ( circumference ). It would be easier to take the circumference of the figure first, as it is composed of arcs part of semicircles the same length.

Circumference of 1 semicircle = \(\frac{1}{2}\)( πd ) =  \(\frac{1}{2}\)π( 4 ) = 2π ( cm )

Circumference of Figure (composed of 6 semicircles + 2 sides of a square),

We know that 6 semicircles should be 6 \(*\) 2π, and as the sides of a square are equal - if one side is 4 cm, the other 3 are 4 cm as well. Therefore the " 2 sides of a square " should be 2

Circumference of Figure = 6 \(*\) 2π + 2 = 12π + 8 ( cm )

_____________

The area of this figure is our next target. As you can see, it is composed of 3 semicircles, and the area of 3 semicircles subtracted from the area of 3 squares. Therefore, let us calculate the area of 1 semicircle, and the area of 1 square first.

Area of 1 semicircle = 1/2π\(r^2\) = 1/2π\((2)^2\) = 2π ( cm ),

Area of 1 square = ( 4 cm )( 4 cm ) = 16 ( \(cm^2\) )

So, the area of the figure should be the following -

Area of Figure = 3 \(*\) 2π + 3( 16 - 2π ) = 48 ( cm )^2

Answer:

−10x − y = −20

y = -10x + 20

hope this helps, good luck :)

Answer:

To find the mean waiting time, you need to add up all the waiting times and divide by the number of customers. In this case, the total waiting time is 6.8 + 7.5 + 7.2 = 21.5 minutes. Since there are 3 customers, the mean waiting time is 21.5 / 3 = 7.17 minutes. Rounded to one decimal place, the mean waiting time is 7.2 minutes.

Step-by-step explanation:

Answer:

Parameter estimates

The coefficient for Px (-5) suggests that there is an inverse relationship between the price of the fruit drink and the quantity demanded. In other words, as the price of the drink increases, the quantity demanded decreases.

The coefficient for M (0.001) suggests that there is a positive relationship between the median annual family income and the quantity demanded. In other words, as the median income increases, the quantity demanded also increases.

The coefficient for Py (10) suggests that there is a positive relationship between the price of the competing brand of fruit drink and the quantity demanded for this brand. In other words, as the price of the competing brand increases, the quantity demanded for this brand also increases.

Step-by-step explanation:

To calculate the monthly consumption of the fruit drink, we plug in the given values into the demand equation,

Qx = 10 - 5(2) + 0.001(20,000) + 10(2.5)

Qx = 10 - 10 + 20 + 25

Qx = 45 liters per family per month.

Therefore, the monthly consumption of the fruit drink per family is 45 liters.

If the median annual family income increased to $30,000, then the new monthly consumption of the fruit drink per family can be calculated as follows,

Qx = 10 - 5(2) + 0.001(30,000) + 10(2.5)

Qx = 10 - 10 + 30 + 25

Qx = 55 liters per family per month.

Therefore, the monthly consumption of the fruit drink per family would increase from 45 liters to 55 liters per family per month.

To determine the demand function, we need to solve for Qx in terms of the other variables,

Qx = 10 - 5Px + 0.001M + 10Py

Qx - 10Py = 10 - 5Px + 0.001M

Qx = (10 - 5Px + 0.001M) / 10Py

Therefore, the demand function is:

Qx = (10 - 5Px + 0.001M) / 10Py

To find the inverse demand function, we need to solve for Px in terms of Qx.

Qx = 10 - 5Px + 0.001M + 10Py

5Px = 10 - Qx - 0.001M - 10Py

Px = (10 - Qx - 0.001M - 10Py) / 5

Therefore, the inverse demand function is,

Px = (10 - Qx - 0.001M - 10Py) / 5