Marca 3 lineas que dividan la circunferencia exactamente por la mitad del diametro

The formula for Observed Score is; Observed score (X) = True score (T) + measurement error (e)

The formula for Observed Score is;

Observed score (X) = True score (T) + measurement error (e)

1) True score is the score that would be obtained if an individual took a test an infinite amount of times and those test scores were averaged. The concept of true score is theoretical because you can't give someone something an infinite number of times.

2) Standard error of measurement is the standard deviation of multiple test scores (how far the sample mean of the data is likely to be from the true population mean).

The less random error (e) in the measure, the more the observed score X approximates the true score T.

Thus;

Observed score = True Score + Error

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We know that the score is obtained by subtracting the number of incorrect answers from twice the number of correct answers. Let's use "x" to represent the number of correct answers.

According to the question, the player answered 40 questions in total. This means that the number of incorrect answers is 40 - x.
Now we can use the formula for the score:
Score = 2x - (40 - x)
We also know that the player obtained a score of 50. So we can set up the equation:
50 = 2x - (40 - x)
Simplifying the equation:
50 = 3x - 40
90 = 3x
x = 30
Therefore, the player answered 30 questions correctly.
To check, we can plug this value back into the formula for the score:
Score = 2x - (40 - x)
Score = 2(30) - (40 - 30)
Score = 60 - 10
Score = 50
So the score of 50 is correct and the player answered 30 questions correctly.

To find out how many questions the player answered correctly in the trivia game with a score of 50, we can use the given information to set up an equation:
Let x be the number of correct answers and y be the number of incorrect answers. According to the question, the score is calculated by subtracting the number of incorrect answers (y) from twice the number of correct answers (2x). The player answered 40 questions in total, so we have:
x + y = 40
2x - y = 50
Now we can solve this system of equations step-by-step:
1. Solve the first equation for x:
x = 40 - y
2. Substitute this expression for x in the second equation:
2(40 - y) - y = 50
3. Simplify the equation:
80 - 2y - y = 50
4. Combine like terms:
80 - 3y = 50
5. Subtract 80 from both sides:
-3y = -30
6. Divide both sides by -3:
y = 10
7. Substitute the value of y back into the expression for x:
x = 40 - 10
x = 30
The player answered 30 questions correctly in the trivia game with a score of 50.

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Answer:

25

Step-by-step explanation:

Answer: $25

Step-by-step explanation:

2500/100 = 25

I think its 30 trillion cells

hope it helps

Answer:

a is 44

b is 8.8

c is 33

Step-by-step explanation:

giv me brainliest plz

If you are asking for an equation for a line that passes through 5,-4:

y + 4 = x - 5

y = x - 9

Answer:

step number 1 is incorrect.

Step-by-step explanation:

Here is the solution of this equation [2x-31-1=2].

2x-31-1=2

or 2x-31=2+1

or 2x=2+1+31

or 2x= 34

or x=34/2

or x= 17

the answer of this equation is X=17.

Answer:

Step 1

Step-by-step explanation:

The number of students in the telescope club by $x$ and the number of students in the math club by $y$.

$y=2x$Now, suppose there are $z$ students who are members of both clubs. Then the total number of students who are in the math club or the telescope club (or both) is given by:$x + y - z$ Substituting $y=2x$ in the above expression, we get:$x + 2x - z=3x - z$ Hence, the expression for the total number of students who are in the math club or the telescope club (or both) is $3x - z$.b)The number of students who are in the math club but not in the telescope club is given by:$y-z$ And the number of students who are in the telescope club but not in the math club is given by:$x-z$ Adding these two expressions, we get the total number of students who are in the math club or the telescope club but not both:$ y-z+x-z $.

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Answer:

45? I'm not 1000% sure tog

Step-by-step explanation:

The percentage of responders that don't enjoy both hamburgers and burritos 16.09%

What is the percentage?

A percentage that represents a tenth of a quantity. One percent, denoted by the symbol 1%, is equal to one-hundredth of something; hence, 100 percent denotes the full thing, and 200 percent designates twice the amount specified. A portion per hundred is what the percentage denotes. The percentage refers to one in a hundred. The % sign is used to denote it.

Burgers are enjoyed by a total of 134 consumers, but only 71 do not; therefore, 205 customers responded.

Part A: The percentage of responders that don't enjoy both hamburgers and burritos

There are 33 of these respondents.

Hence, The percentage will be 33/205 = 16.09%

Part B: The marginal relative frequency of all consumers who enjoy hamburgers is presented in

The ratio of the total number of respondents to the number of consumers who prefer hamburgers will determine this.

The ratio will be 134/205 = 0.65

Part C: The information point with the strongest correlation between its two components.

The ratio of each of the four data points to the sum must be determined for this.

For those who like Hamburgers but not burritos is 95/ 134 = 0.71

Those who do not like burritos or Hamburgers is 33/71 = 0.47

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The curve represented by the parametric equations x = t^2 + 1 and y = 7t + 1 is sketched, indicating the orientation of the curve. The corresponding rectangular equation is obtained by eliminating the parameter t, resulting in the equation y = 7√(x - 1) + 1.

To sketch the curve represented by the parametric equations x = t^2 + 1 and y = 7t + 1, we can analyze the behavior of x and y as t varies. Since x = t^2 + 1, we can see that x increases as t increases. This indicates that the curve moves in the positive x-direction. Similarly, since y = 7t + 1, we observe that y also increases as t increases. Therefore, the curve moves upward in the positive y-direction.

To obtain the corresponding rectangular equation, we can eliminate the parameter t by solving one of the equations for t and substituting it into the other equation. From the equation y = 7t + 1, we can solve for t as t = (y - 1)/7. Substituting this value of t into x = t^2 + 1, we get x = ((y - 1)/7)^2 + 1. Simplifying further, we have x = (y - 1)^2/49 + 1. Rearranging this equation, we obtain (y - 1)^2 = 49(x - 1). Taking the square root of both sides, we get y - 1 = 7√(x - 1). Finally, rearranging this equation, we arrive at the rectangular equation y = 7√(x - 1) + 1.

In conclusion, the curve represented by the parametric equations x = t^2 + 1 and y = 7t + 1 moves in the positive x-direction and upward in the positive y-direction. The corresponding rectangular equation is y = 7√(x - 1) + 1, which describes the relationship between x and y on the curve.

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Step-by-step explanation:

perpendicular means to cross at a right angle (90 degrees).

so, any line perpendicular to the x-axis is parallel to the y-axis.

and any line parallel to the y-axis has only a defining x value. all points on that line have the same x value (while any value for y from -infinity to +infinity is valid).

the y-axis itself is

x = 0

the specified point here has an x value of 4.

so, the line we are looking for is

x = 4

to point out : this is NOT a function, because for the same x value we get more than 1 valid y values.

Answer:

12 hope this helps

Step-by-step explanation:

Step-by-step explanation:

I assume this means multiplication of functions, and not "f of g of x".

when applying a basic mathematical operation on functions, we are doing this with their expressions.

(f×g)(x) = (x² + 12x + 35) × (x + 7) =

= x³ + 7x² + 12x² + 84x + 35x + 245 =

= x³ + 19x² + 119x + 245

Answer:

-55/8

Hope this helps! :)

The aggregate quantity of the good that Ron and Nancy buy is 6 units.

To find the aggregate quantity, we need to determine the equilibrium quantity where the demand and supply functions intersect. The demand functions for Ron and Nancy are given as \(D_{R}\): \(Q_{R}\)= 8 - 2\(P_{R}\)  and \(D_{N}\): \(Q_{N\) = 7 - \(P_{N}\), respectively. The supply function is S: Q = -1 + P.

To find the equilibrium quantity, we set the quantity demanded equal to the quantity supplied:

\(Q_{R}\) + \(Q_{N\) = Q

Substituting the demand and supply functions, we have:

(8 - 2\(P_{R}\) ) + (7 - \(P_{N}\)) = -1 + P

Simplifying the equation, we get:

15 - 2\(P_{R}\)  - \(P_{N}\) = -1 + P

Rearranging the equation, we have:

\(P_{R}\)  + \(P_{N}\) + P = 16

Since the total price is equal to 16, we know that the aggregate quantity is equal to the sum of the quantities demanded:

Q = \(Q_{R}\) + \(Q_{N\) = (8 - 2\(P_{R}\) ) + (7 - \(P_{N}\)) = 15 - 2\(P_{R}\)  - \(P_{N}\)

Substituting the values of \(P_{R}\)  = \(P_{N}\) = 5 into the equation, we find:

Q = 15 - 2(5) - 5 = 6

Therefore, the aggregate quantity of the good that Ron and Nancy buy is 6 units.

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Population - - > Sampling Frame - - > Sample - - > Individual being surveyed is the order from largest to smallest.

The population is the largest as they include all units or subject of interest in a particular study or experiment.

Next is the sampling frame which is the list or compilation of all subjects which can form part of a sample. It is a compilation of all elements in the population from which the sample can be drawn.

The sample is a subset of the population of population, usually selected at random and it is representative of the population.

The individual surveyed represents a single subject or observation from the chosen sample.

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Answer:

The loudness of the dinner conversation is 40 dB

Step-by-step explanation:

Loudness in dB = 10\(Log_{10}\) \((\frac{I}{I_{o} })\)

where \(I_{0}\) is the least intense sound a human can hear = \(10^{-12}\) W/m^2

For a dinner conversation with sound intensity of \(I\) = \(10^{-7}\) W/m^2

Loudness = 10\(Log_{10}\) \((\frac{10^{-7} }{10^{-12} })\) = 10\(Log_{10}\) \(( 10^{4} )\) = 40 dB

Answer:

50 Db

Step-by-step explanation:

Step-by-step explanation:

I donot know it hard for me

Answer:

10-2 is 8 and keep the five drag the eight as the exponent and thats how you get your answer

Step-by-step explanation:

brainliest please

Answer:

y=2x

Step-by-step explanation:

Y=kx

12=k6

12 divided by 6 to get 2

and 2=k

Answer:

50; 72; 8; 57.9

Step-by-step explanation:

1. sqrt((30/2)^2 + (20)^2) = sqrt(15^2 + 20^2) = sqrt(225 + 400) = sqrt(625) = 25 (radius) * 2 = 50 (diameter)

2. 360 (degrees in a circle)/5 (sides in a pentagon) = 72 degrees

3. 360 (degrees in a circle)/x (sides) = 45 --> 360/45 = x --> 8 sides = x

4. sqrt(7^2 + (12/2)^2) = radius --> sqrt(49 + 36) --> sqrt85 * 2pi = circumference --> 57.9281062 = circumference --> 57.9

To create a parallelogram, just think of 2 different pairs of parallel lines that never intersect.

A parallelogram is a quadrilateral with opposite sides that are parallel and equal in length. To create a parallelogram, we need to visualize two different pairs of lines that never intersect. The pairs of lines must be parallel to each other, meaning they have the same slope and will never converge or cross each other. By ensuring that these pairs of lines remain parallel, we can form a quadrilateral with opposite sides that are parallel and equal in length, defining a parallelogram.

Understanding the concept of parallel lines is fundamental for constructing a parallelogram. This knowledge enables us to identify and visualize the appropriate lines that can form a parallelogram. By ensuring the parallelism of these lines, we guarantee the creation of a quadrilateral with specific geometric properties.

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Answer:

The pizza parlors cost the same when delivering 4 pizzas.

Step-by-step explanation:

For each store, the total price is

cost of pizzas + cost of delivery

The cost of delivery is just a fixed number for each store, $20 or $12.

The cost of the pizzas is the price of a pizza multiplied by the number of pizzas.

Let x = number of pizzas

The cost of the pizzas is

Jacob's: 10x

Ashley's: 12x

Jacob's total cost (pizzas + delivery):

10x + 20

Ashley's total cost (pizzas + delivery):

12x + 12

We want the total costs to be the same, so we set our two total cost expressions equal and solve for x.

12x + 12 = 10x + 20

Subtract 10 from both sides.

2x + 12 = 20

Subtract 12 from both sides.

2x = 8

Divide both sides by 2.

x = 4

Answer: The pizza parlors cost the same when delivering 4 pizzas.

A period is the difference in x over which a sine function returns to its equivalent state and the amplitude is A/5.

Amplitude:

The amplitude of a periodic variable is a measure of its change over a period of time, such as a temporal or spatial period. The amplitude of an aperiodic signal is its magnitude compared to a reference value. There are various definitions (see below) of amplitude, which is any function of the magnitude of the difference between the extreme values ​​of a variable. In the previous text, the phase of a periodic function is called the amplitude.

                       X = A sin (ω[ t - K]) + b

A is the amplitude (or peak amplitude),

x is the oscillating variable,

ω  is angular frequency,

t is time,

K and b are arbitrary constants representing time and displacement respectively.

According to the Question:

An equation does not have an amplitude. This "equation" represents the formula of a vibration, and was better written as:

X= A/5* sin(1000.t + 120)

These oscillations have a certain amplitude. X values ​​can vary from minimum to maximum. Normally, the stop position of the oscillation is X=0. In this case, we can see that the maximum occurs when the sine is +1 and the minimum occurs when the sine is -1.

For theses cases X= A/5 respectively -A/5.

Therefore,

The amplitude is A/5.

For formulas of this type, the term in front of the sinus (or cosine) is equal to the amplitude.

Complete question:

Can I find the amplitude of this equation? A/5 *