y shopping a survey of u.s. adults found that of people said that they would get no work done on cyber monday since they would spend all day shopping online. find the confidence interval of the true proportion. round intermediate answers to at least five decimal places. round your final answers to at least three decimal places.

Answers

Answer 1

The required real proportion's 95% confidence interval is (0.301; 0.359).

What is a confidence interval?

In statistics, a confidence interval describes the likelihood that a population parameter would fall between a set of values for a given percentage of the time.

Confidence ranges that include 95% or 99% of anticipated observations are frequently used by analysts.

So, the sample size is 1000.

Phat = 0.33

(1 - phat) = 1 - 0.33 = 0.67

Zcritical = 1.96 at 95%

The confidence range is as follows:

Phat ± margin of error

Margin of Error = Zcritical * sqrt[(phat(1 - phat)) /n]

Margin of Error = 1.96 * sqrt[(0.33 * 0.67) / 1000]

Margin of Error = 1.96 * 0.0148694

Margin of Error = 0.0291440

Lower boundary = (0.33 - 0.0291440) = 0.300856

Upper boundary = (0.33 + 0.0291440) = 0.359144

Therefore, the required real proportion's 95% confidence interval is (0.301; 0.359).

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Correct question:
Cyber Monday Shopping A survey of 1000 U.S. adults found that 33% of people said that they would get no work done on Cyber Monday since they would spend all day shopping online. Find the 95% confidence interval of the true proportion.


Related Questions

Last week salazar played 13 more tennis games than perry. if they played a combined total of 53 games. How many games did salazar play?

Answers

If last week Salazar played 13 more tennis games than Perry and they played a combined total of 53 games, then Salazar played a total of 33 games.

Let the total number of games played by Perry be x.

It is given that, Salazar played 13 more tennis games than Perry.

Total games played by Salazar = x + 13

Also, Salazar and Perry played a combined of 53 games.

Hence, total number of tennis games played by Salazar and Perry = 53

⇒ Games played by Salazar + Games played by Perry = 53

⇒  x + (x + 13) = 53

2x + 13 = 53

2x = 53 - 13

2x = 40

x = 40 / 2

x = 20

Therefore, total number of games played by Salazar = x+13

= 20 + 13

= 33

Thus, Salazar played total 33 games.

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A protractor is used on an angle. One ray of the angle is at 13° and the other ray is at 57°.
What is the measure of the angle?

Answers

The required measure of the angle measured by using a protractor is 70°

Given situation : A protractor is used on an angle

A ray is passed through this angle

we have to find the measure of the total angle

Let the angle is passed through an angle ∠ABC

and the ray be BD

thus the two angles which will be formed will be

∠ABD and ∠DBC

Now let one of the angles , say angle ∠ABD be 13°

and ∠DBC be 57°

Thus the whole angle would be ∠ABD + ∠DBC = ∠ABC

∠ABC = 57 + 13 = 70°

Thus the required measure of the angle is 70°

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Giving brainly for answer correctly uwu:)<3

Giving brainly for answer correctly uwu:)&lt;3

Answers

The correct answer is A.

Prompt: We recently completed a unit in math about transformations.

Compare and contrast the three types of transformations: translations, reflections, and rotations.

Include the algebraic rules, whether each transformation preserves congruence and any examples of

real-world application.

Answers

The translations, reflections, and rotations are types of transformations that change an original object to form a new image, each with its own specific rule and properties. They are used in a variety of real-world applications to change the position or orientation of objects.

There are 3 types of Transformations :

(i) Translation: A translation involves moving an object from one place to another without changing its size or orientation.  

The algebraic rule for a translation is to add the same constant to each coordinate of each point

The Translations preserve congruence, meaning that corresponding parts of congruent figures will still be congruent after a translation.

An example of a real-world application of translation is moving a store to a new location.

(ii) Reflection: A reflection involves flipping an object over a line or point, creating a mirror image.

The algebraic rule for a reflection is to negate the value of one of the coordinates.

Reflections preserve orientation, meaning that the orientation of the reflected image is opposite that of the original object.

An example of a real-world application of reflection is looking at your reflection in a mirror.

(iii) Rotation: A rotation involves turning an object about a fixed point, called the center of rotation, through a certain angle.

The algebraic rule for a rotation is to multiply each coordinate by a rotation matrix.

Rotations preserve distance and angle measures, meaning that the lengths of corresponding parts and the angles between them are equal in the original and rotated images.

An example of a real-world application of rotation is turning a steering wheel to change the direction of a car.

The given question is incomplete , the complete question is

Compare and contrast the three types of transformations: translations, reflections, and rotations.

Include the algebraic rules, whether each transformation preserves congruence and any examples of real-world application.

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Write the equation of the line that passes through the given points.
(-2,8.5) and (0,3.5)

Answers

\((\stackrel{x_1}{-2}~,~\stackrel{y_1}{8.5})\qquad (\stackrel{x_2}{0}~,~\stackrel{y_2}{3.5}) ~\hfill \stackrel{slope}{m}\implies \cfrac{\stackrel{rise} {\stackrel{y_2}{3.5}-\stackrel{y1}{8.5}}}{\underset{run} {\underset{x_2}{0}-\underset{x_1}{(-2)}}} \implies \cfrac{-5}{0 +2}\implies -\cfrac{5}{2}\)

\(\begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\stackrel{y_1}{8.5}=\stackrel{m}{- \cfrac{5}{2}}(x-\stackrel{x_1}{(-2)}) \implies y -8.5= -\cfrac{5}{2} (x +2) \\\\\\ y-8.5=-\cfrac{5}{2}x-5\implies y=-\cfrac{5}{2}x-5+8.5\implies {\Large \begin{array}{llll} y=-\cfrac{5}{2}x+3.5 \end{array}}\)

Describe the error(s). 1/ tan(x) + cot(−x) = cot(x) + cot(x) = 2 cot(x)

Answers

The error in the given equation is that the expression "cot(-x)" is incorrect. The correct expression should be "cot(x)" instead. With this correction, the equation would simplify to "1/tan(x) + cot(x) = cot(x) + cot(x) = 2cot(x)".

In the given equation, the error lies in the term "cot(-x)". The cotangent function is an even function, meaning that cot(-x) is equal to cot(x). Therefore, the original equation simplifies to "1/tan(x) + cot(x) = cot(x) + cot(x) = 2cot(x)".

The cotangent function, cot(x), is defined as the ratio of the adjacent side to the opposite side in a right triangle, where the angle is x. Since the cotangent function is the reciprocal of the tangent function, cot(x) is equivalent to 1/tan(x).

By substituting this equivalence into the equation, we can rewrite it as "1/tan(x) + 1/tan(x) = 2cot(x)". Simplifying further, we get "2/tan(x) = 2cot(x)". Canceling out the common factor of 2 on both sides of the equation, we arrive at "1/tan(x) = cot(x)". Therefore, the correct equation should be "1/tan(x) + cot(x) = cot(x) + cot(x) = 2cot(x)".

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Find the total surface area of this triangular prism. 13 cm 15 cm 12 cm 20 cm 5 cm 9 cm​

Answers

Step-by-step explanation:

first calculate the area of the two triangles and add them up...calculate the area of the three rectangles on each side add them up...finally add the sum of the rectangles together with the triangle

The total surface area of the triangular prism given in the figure and formed by two triangles and three rectangles is equal to 1176 square centimeters.

How to calculate the surface area of the triangular prism

Total surface area is the sum of areas of all faces of a given solid. The total surface area is the surface area of all faces of the triangular prism,  which is equal to the sum of the areas of the faces, represented by two triangles of equal area and three rectangles of distinct area:

A = 2 · (14 cm) · (12 cm) + (15 cm) · (20 cm) + (13 cm) · (20 cm) + (14 cm) · (20 cm)

A = 1176 cm²

The total surface area of the triangular prism given in the figure and formed by two triangles and three rectangles is equal to 1176 square centimeters.

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Find the total surface area of this triangular prism. 13 cm 15 cm 12 cm 20 cm 5 cm 9 cm

consider the following two statements: i ) the derivative of a sum is the sum of the derivatives. ii) the derivative of a difference is the difference of the derivatives. select the correct response below
a. Neither i or ii is true. b. Only statement ii is true. c. Only statement i is true d. Both i and ii are true.

Answers

there is a related property known as the chain rule which can be used to differentiate a difference of functions.

The correct response is: c. Only statement i is true.

Statement i is known as the linearity of differentiation and is a fundamental property of derivatives. It states that the derivative of a sum of functions is equal to the sum of their derivatives.

On the other hand, statement ii is not true in general. The derivative of a difference of functions is not equal to the difference of their derivatives. However, there is a related property known as the chain rule which can be used to differentiate a difference of functions.

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Show that there exist a rational number a and an irrational number b such that a^b is irrational.

Answers

Answer:

In explanation below.

Step-by-step explanation:

Presumably, the proof you have in mind is to use a=b=2–√a=b=2 if 2–√2√22 is rational, and otherwise use a=2–√2√a=22 and b=2–√b=2. The non-constructivity here is that, unless you know some deeper number theory than just irrationality of 2–√2, you won't know which of the two cases in the proof actually occurs, so you won't be able to give aa explicitly, say by writing a decimal approximation.

There are 9 snakes, 3 bats, 12 fish and 4 snails. What is the probability you choose a fish?

Answers

Answer:

3/7

Step-by-step explanation:

add them all up 9+3+12+4=28

28 will be the bottom number of the fraction 12 wil be the top

12/28 then simplify by dividing by 2 6/14 then once more 3/7

A(n) method is like a blueprint, or template, for all the objects within a class. true or false?

Answers

The statement " A(n) method is like a blueprint, or template, for all the objects within a class" is true because methods define the behavior or operations that an object can perform and are defined within a class, acting as a blueprint or template for creating objects in object-oriented programming.

A method in object-oriented programming is a set of instructions that defines the behavior or operations that an object can perform. It is a part of a class, which acts as a blueprint or template for creating objects. When an object is created from a class, it can access and use the methods defined within that class.

Methods can be used to perform tasks, manipulate data, or interact with other objects. They are an essential aspect of encapsulation in object-oriented programming, as they allow for data to be accessed and manipulated in a controlled manner. Overall, methods are a crucial tool for developers to create robust and scalable applications.

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What's 2 meters to 76 centimeters in simplest form

Answers

Answer:

I am not really getting your question. Could you comment on this answer?

1 meter = 100 centimeters

Ratio:

2 m : 76 cm

200 cm : 76 cm

2 m : 0.76 m

83-[29-{6 divided by 3 -(6-9 divided by 3 ) divided by 3 }]

Answers

The value of the expression is 55.

Step 1: Simplifying the innermost parentheses

Inside the innermost parentheses, we have the expression (6 - 9 ÷ 3). We need to divide 9 by 3 first, which gives us 3. Now we can subtract 3 from 6, resulting in (6 - 3) = 3. Therefore, the expression becomes 83 - [29 - {6 ÷ 3 - 3 ÷ 3}].

Step 2: Simplifying the division inside the curly braces

Within the curly braces, we have the expression 6 ÷ 3. Dividing 6 by 3 gives us 2. Substituting this value back into the expression, we have 83 - [29 - {2 - 3 ÷ 3}].

Step 3: Simplifying the division inside the curly braces (again)

Inside the curly braces, we have 3 ÷ 3. Dividing 3 by 3 gives us 1. Substituting this value back into the expression, we have 83 - [29 - {2 - 1}].

Step 4: Simplifying the subtraction inside the curly braces

Within the curly braces, we have the expression 2 - 1, which equals 1. Substituting this value back into the expression, we have 83 - [29 - 1].

Step 5: Simplifying the subtraction inside the square brackets

Inside the square brackets, we have 29 - 1, which gives us 28. Substituting this value back into the expression, we have 83 - 28.

Step 6: Performing the subtraction

Finally, we subtract 28 from 83, resulting in 55.

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If triangle ABC is congruent to triangle DEC angle b = x + 15 and angle e = 6x - 65

Answers

Answer:

x = 16

Step-by-step explanation:

Since the triangles are congruent, then corresponding angles are congruent.

∠ B and ∠ E are corresponding angles and congruent, thus

6x - 65 = x + 15 ( subtract x from both sides )

5x - 65 = 15 ( add 65 to both sides )

5x = 80 ( divide both sides by 5 )

x = 16

x = 16Step-by-step explanation:Since the triangles are congruent, then corresponding angles are congruent.∠ B and ∠ E are corresponding angles and congruent, thus6x - 65 = x + 15 ( subtract x from both sides )5x - 65 = 15 ( add 65 to both sides )5x = 80 ( divide both sides by 5 )x = 16

Step-by-step explanation:

Describe a real-world situation in which opposite quantities combine to make zero.

Answers

If a person has the same magnitude of displacement in two opposite directions, the combined displacement is zero.

What quantities combine to make a zero?

We have to know that the quantities that do combine to make a zero, the quantities that we are talking about must be vectors. This is because the vectors have both magnitude and direction.

Let us use displacement in this example. Displacement is the change in the position of an object with time in a specified direction. If a person moves to the right 30 m and then moves to the left 30 m. If the left is arbitrarily taken as negative and the right is arbitrarily taken as positive then the total displacement of he person is zero.

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what does democracy mean and how do we practice it in the United States of America ​PLEASE HELPPP!!!!

Answers

Answer:

a system of government by the whole population or all the eligible members of a state, typically through elected representatives. The United States is one of the world's developed democracies where third parties have the least political influence. The federal entity created by the U.S. Constitution is the dominant feature of the American governmental system.

Step-by-step explanation:

find range (R):27,12,15,21,24,9​

Answers

27-9= 18

Have a nice day!

Answer:

18

Step-by-step explanation:

The range is the highest data minus the smallest data.

Hence range is 27 - 9 = 18.

Add.
522 52+1
+ 2x² +92-6
A. 7x² + 4x-5
OB. 7x²-4x+5
O C. 7x² + 4x+7
OD. 7x² +14x-5

Add.522 52+1+ 2x +92-6A. 7x + 4x-5OB. 7x-4x+5O C. 7x + 4x+7OD. 7x +14x-5

Answers

The simplified expression should be 7x² + 4x - 5. option A.

How do we simplify the expression?

 5x² - 5x + 1

+ 2x² +9x -6 is simply 5x² - 5x + 1 + 2x² +9x -6

To add the two expressions, we simply combine like terms.

(5x² - 5x + 1) + (2x² + 9x - 6)

Combine the like terms for the x² terms: 5x² + 2x² = 7x²

Combine the like terms for the x terms: -5x + 9x = 4x

Combine the constant terms: 1 - 6 = -5

Therefore, the simplified expression is 7x² + 4x - 5.

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Consider a source host connected to a destination host via three equivalent intermediate routers. If the probability of a successful transmission is 0.729, calculate the mean path length traveled by the packet.

Answers

The mean path length traveled by the packet is 3.

What is the mean path length?

⇒ The mean path length is the average number of hops that it will take for a packet to go from its origination point to its final destination.

Because there are three routers in the path that runs between the source and the destination, the average path length for this particular scenario is 3. Since there is a 0.729 chance that the transmission will be successful, this indicates that it will take a packet 3 times 0.729, which is 2.187 hops to get to its final destination on average.

When evaluating the effectiveness of a network, one of the most significant metrics to consider is the mean path length. A lower mean path length shows that packets are spending less time in transit, which leads to the conclusion that the network is operating at a higher level of efficiency.

On the other hand, it is essential to keep in mind that the minimum distance traveled does not necessarily correspond to the mean journey length. When certain conditions are met, it may be advantageous for a packet to travel a longer distance if this ensures that it will come into contact with a smaller number of busy routers.

Hence, The mean path length traveled by the packet is 3.

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On April 26th, Laura decided to buy her brother a computer for his birthday on May 25th. The computer costs $986, but during a store's pre-memorial day sale the price drops $14 each day. Laura has $427. She earns $42 babysitting each week and was paid on April 25th. Will Laura have enough money to buy the computer before her brother's birthday. Explain your answer

Answers

Yes, Laura will have enough money to buy the computer before her brother's birthday.

What is cost?

Cost is the total amount of money, time, and resources required to produce or acquire a product, service, or outcome. It involves the initial outlay of money, time, and resources necessary to produce or acquire something. In addition, it involves any ongoing expenses required to maintain or improve that something. Cost can be a one-time purchase, a long-term investment, or a recurring expense.

At the time of her purchase, Laura had $427 which is $59 short of the $486 computer. She earns $42 each week from babysitting, so if she saves every penny she earns for the next 7 weeks she will have enough money to buy the computer. She will have $294 after the first week of saving, $336 after the second week, $378 after the third week, $420 after the fourth week, $462 after the fifth week, $504 after the sixth week, and $546 after the seventh week. The $546 is more than enough money to purchase the computer before her brother's birthday.

Additionally, the computer's price drops $14 each day, so if Laura waits an extra week to purchase the computer, it will cost her even less. She will have $588 after the eighth week and would only need to spend $400 to purchase the computer.

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Find the value of x. Enter your answer in the box.Granola Bars1242Box2xx =

Answers

To find the value of x in the equation "Granola Bars / 1242 = Box / 2x", we can set up a proportion and solve for x.

The proportion can be written as:

Granola Bars / 1242 = Box / (2x)

To solve for x, we can cross-multiply and solve the resulting equation:

Granola Bars * 2x = 1242 * Box

2 * Granola Bars * x = 1242 * Box

Dividing both sides by 2 * Granola Bars:

x = (1242 * Box) / (2 * Granola Bars)

Therefore, the value of x is given by (1242 * Box) / (2 * Granola Bars).

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Melissa buys framing to go around the perimeter of her rectangular painting that measures inches by 8 1/4 inches. 10 1/4 Each inch of framing costs $0.45. What is the total cost for the framing? Show your work.

Answers

The total cost of the framing measuring 8 1/4 inches by 10 1/4 is  $16.65

How to determine the cost of the framing

The total perimeter of the framing is solved by the formula

= perimeter of the frame * price of each framing

perimeter  of the framing is equal to perimeter of rectangle

= 2 * (length + width)

= 2 * (10 1/4 + 8 1/4)

= 37 inch

The cost of the framing

Since the unit cost of the framing is $0.45 per inch then the total cost is

= 0.45 * 37

= $16.65

The framing will cost  $16.65

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what is the answer to 22% of 49.6?

Answers

Answer:

10.912

Step-by-step explanation:

0.22*49.6=10.912

Answer:

the answer is 225.45

Step-by-step explanation:

49.6 ÷ 22% =

49.6 ÷ (22 ÷ 100) =

(100 × 49.6) ÷ 22 =

4,960 ÷ 22 ≈

225.454545454545 ≈

225.45

what sample size would be required to detect a true mean speed as low as 94 meters per second if you wanted the power of the test to be at least 0.85

Answers

To calculate the sample size required to detect a true mean speed of 94 meters per second with a power of at least 0.85, we need to know the significance level and the standard deviation of the population.

Assuming a 5% significance level (alpha = 0.05) and a standard deviation of 10 meters per second, we can use the following formula:

n = (Z_beta + Z_alpha/2)^2 * σ^2 / d^2

where:

Z_beta is the Z-score for the desired power (0.85) from the standard normal distribution, which is approximately 1.04.

Z_alpha/2 is the Z-score for the desired significance level (0.05/2 = 0.025) from the standard normal distribution, which is approximately 1.96.

σ is the standard deviation of the population, which is 10 meters per second.

d is the difference between the true mean speed and the hypothesized mean speed, which is 100 - 94 = 6 meters per second.

Substituting these values into the formula, we get:

n = (1.04 + 1.96)^2 * 10^2 / 6^2

≈ 49.56

Therefore, a sample size of at least 50 would be required to detect a true mean speed as low as 94 meters per second with a power of at least 0.85, assuming a 5% significance level and a standard deviation of 10 meters per second.

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\( \frac{y}{2} + 9 = 6\)
what is the awnser and steps​

Answers

Answer:

y = - 6

Step-by-step explanation:

Given

\(\frac{y}{2}\) + 9 = 6 ( subtract 9 from both sides )

\(\frac{y}{2}\) = - 3 ( multiply both sides by 2 to clear the fraction )

y = - 6

Help please! !!!!!!!!!!!!!!!!!!!!!!

Help please! !!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

the answer is -16(t-2)(t+1)

Step-by-step explanation:

1.)3(x+2)=15
2.)2(x+5)=24
3.)6(x-9)=12
4.)2(3x+5)= -44
5.)5(4x-3)=11
6.)-3(2x+1)=21
7.)-9(x -4)=54
8.)7(x-4)-3=46
9.)2(3x-1)+3=21
10.)2(x+1)+3x=37
11.)12+4(2x+4)=68
12.)3x-2(6x-3)=42

Answers

The solution to the Equations is    x = 3, x = 7, x = 11,  x = -9,  x = 1.3,               x = -4, x = -4,x = -2,x = 11, x = 3.33,x = 7, x = 5,x = -4.

1. To solve 3(x+2)=15, we first distribute the 3 and get 3x + 6 = 15. Then, we subtract 6 from both sides and get 3x = 9. Finally, we divide both sides by 3 and get x = 3.

2. To solve 2(x+5)=24, we first distribute the 2 and get 2x + 10 = 24. Then, we subtract 10 from both sides and get 2x = 14. Finally, we divide both sides by 2 and get x = 7.

3. To solve 6(x-9)=12, we first distribute the 6 and get 6x - 54 = 12. Then, we add 54 to both sides and get 6x = 66. Finally, we divide both sides by 6 and get x = 11.

4. To solve 2(3x+5)= -44, we first distribute the 2 and get 6x + 10 = -44. Then, we subtract 10 from both sides and get 6x = -54. Finally, we divide both sides by 6 and get x = -9.

5. To solve 5(4x-3)=11, we first distribute the 5 and get 20x - 15 = 11. Then, we add 15 to both sides and get 20x = 26. Finally, we divide both sides by 20 and get x = 1.3.

6. To solve -3(2x+1)=21, we first distribute the -3 and get -6x - 3 = 21. Then, we add 3 to both sides and get -6x = 24. Finally, we divide both sides by -6 and get x = -4.

7. To solve -9(x-4)=54, we first distribute the -9 and get -9x + 36 = 54. Then, we subtract 36 from both sides and get -9x = 18. Finally, we divide both sides by -9 and get x = -2.

8. To solve 7(x-4)-3=46, we first distribute the 7 and get 7x - 28 - 3 = 46. Then, we combine like terms and get 7x - 31 = 46. Then, we add 31 to both sides and get 7x = 77. Finally, we divide both sides by 7 and get x = 11.

9. To solve 2(3x-1)+3=21, we first distribute the 2 and get 6x - 2 + 3 = 21. Then, we combine like terms and get 6x + 1 = 21. Then, we subtract 1 from both sides and get 6x = 20. Finally, we divide both sides by 6 and get x = 3.33.

10. To solve 2(x+1)+3x=37, we first distribute the 2 and get 2x + 2 + 3x = 37. Then, we combine like terms and get 5x + 2 = 37. Then, we subtract 2 from both sides and get 5x = 35. Finally, we divide both sides by 5 and get x = 7.

11. To solve 12+4(2x+4)=68, we first distribute the 4 and get 12 + 8x + 16 = 68. Then, we combine like terms  x = 5.

12.To solve 3x - 2(6x - 3) = 42, we first distribute the -2 and get:3x - 12x + 6 = 42,9x + 6 = 42Then, we subtract 6 from both sides:-9x = 36Finally, we divide both sides by -9 and get:x = -4Therefore, the solution to the equation is x = -4.

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The solution to the algebraic expressions are:

1. x = 3

2. x = 7

3. x = 13

4. x = -9

5. x = 1.3

6. x = -4

7. x = -2

8. x = 11

9. x = 10/3

10. x = 5

11. x = 5

12. x = -4

How to solve Algebra Expressions?

1. 3(x + 2) = 15,

Using distributive property, we get 3x + 6 = 15.

3x = 9

x = 9/3

x = 3

2. 2(x + 5) = 24

Using distributive property, we get:

2x + 10 = 24

2x = 14

x = 7

3. 6(x - 9) = 12

Using distributive property, we get:

6x - 54 = 24

6x = 78

x = 78/6

x = 13

4. 2(3x + 5) = -44

Using distributive property, we get:

6x + 10 = -44

6x = -54

x = -9

5. 5(4x - 3) = 11

Using distributive property, we get:

20x - 15 = 11

20x = 26

x = 1.3

6. -3(2x + 1) = 21

-6x - 3 = 21

-6x = 24

x = -4

7. -9(x - 4) = 54

Using distributive property, we get:

-9x + 36 = 54

-9x = 54 - 36

-9x = 18

x = -2

8. 7(x - 4) - 3 = 46

Using distributive property, we get:

7x - 28 - 3 = 46

7x = 77

x = 11

9) 2(3x - 1) + 3 = 21

Using distributive property, we get:

6x - 2 + 3 = 21

6x = 20

x = 20/6

x = 10/3

10) 2(x + 1) + 3x = 37

2x + 2 + 3x = 37

5x = 35

x = 5

11) 12 + 4(2x + 4) = 68

12 + 8x + 16 = 68

8x = 40

x = 5

12) 3x - 2(6x - 3) = 42

3x - 12x + 6 = 42

6 - 9x = 42

9x = -36

x = -36/9

x = -4

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Lanthanum -144 becomes cerium- 144 when it undergoes a beta decay (write an equation)

Answers

Beta decay is a type of radioactive decay that occurs in certain atomic nuclei. It involves the transformation of a neutron or proton within the nucleus into the other.

In the case of Lanthanum-144 (La-144), a neutron undergoes beta decay to convert into a proton, resulting in the formation of Cerium-144 (Ce-144).

The equation for the beta decay of La-144 into Ce-144 is as follows:

La-144 → Ce-144 + β¯

In this equation, the La-144 nucleus decays into the Ce-144 nucleus. To conserve charge, a beta particle (β¯) is emitted. The beta particle can be either an electron (β-) or a positron (β+), depending on the specific type of beta decay occurring in the nuclide.

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y2-2y+6 for y=2is pls and the first will be the brainliest and I will follow them and give a like ​

Answers

Answer:

2*2-2*2+6

4-10

-6

Step-by-step explanation:

as we know that y=2 so i juat put the vakue of y

Answer:

put the value of 2 in the expression y2 and -2y

2sq.-2•2+6

4-4+6

0+6

6 ..

what is the value of x?

what is the value of x?

Answers

Answer:

60

Step-by-step explanation:

60 times 2 is 120 plus 24 is 144

60°

(2x+24)=144 (vertically opposite angles equal)

Continue to solve for x
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