I'll give brainiest to the first person to respond BUT only if the answer is correct

Answer:

= 1 2

Step-by-step explanation:

Combine multiplied terms into a single fraction

Multiply by 1

Add the numbers

Subtract  7  from both sides of the equation then Simplify

The work done by the constant force of 6 N in moving an object from x = 0 to x = 4 meters is equal to 24 J.

Work is the dot product of force and displacement, which in this case is the product of the constant force of 6 N and the displacement of 4 meters in the x-direction.

Work is calculated as W = F * d * cos(Θ), where Θ is the angle between the force and displacement vectors, and in this case, it is 0° as the force and displacement are in the same direction.

Therefore, W = 6 N * 4 m * cos(0°) = 6 N * 4 m = 24 Nm = 24 J. The unit of joule (J) can also be expressed as Newton-meter (Nm).

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Answer:  A

Step-by-step explanation:

When multiplying: Numbers multiply with numbers and for the x's, add the exponents

If there is no exponent, you can assume an imaginary 1 is the exponent

2x⁴ (3x³ − x² + 4x)

= 6x⁷ -2x⁶ + 8x⁵

Answer:

A. \(6x^{7} - 2x^{6} + 8x^{5}\)

Label the parts of the expression:

Outside the parentheses = \(2x^{4}\)

Inside parentheses = \(3x^{3} -x^{2} + 4x\)

You must distribute what is outside the parentheses with all the values inside the parentheses. Distribution means that you multiply what is outside the parentheses with each value inside the parentheses

\(2x^{4}\) × \(3x^{3}\)

\(2x^{4}\) × \(-x^{2}\)

\(2x^{4}\) × \(4x\)

First, multiply the whole numbers of each value before the variables

2 x 3 = 6

2 x -1 = -2

2 x 4 = 8

Now you have:

6\(x^{4}x^{3}\)

-2\(x^{4}x^{2}\)

8\(x^{4} x\)

When you multiply exponents together, you multiply the bases as normal and add the exponents together

\(6x^{4+3}\) = \(6x^{7}\)

\(-2x^{4+2}\) = \(-2x^{6}\)

\(8x^{4+1}\) = \(8x^{5}\)

Put the numbers given above into an expression:

\(6x^{7} -2x^{6} +8x^{5}\)

distribution

variable

like exponents

The model is a representation of the polynomial factors using algebraic

tiles.

The equation represented by the model is the option;

Reasons:

The parameters of the model of the polynomial and the factors of the

polynomial are;

The number of factors of the polynomial = 2

1 of the four tiles is labelled x

3 of the four tiles is labelled -ve

Therefore;

A factor of the polynomial is x-tile, -tile, -tile, -tile = (x tile - 3 tiles) = (x - 3)

1 of the two tiles is labelled x

1 of the two tiles is labelled -ve

Which gives;

A factor of the polynomial is x, -tile = (x-tile - 1 tile) = (x - 1)

The 8 tiles are as follows;

1 of the 8 tiles is labelled x²

4 of the 8 tiles are labelled -x

3 of the 8 tiles are labelled +

Which gives;

The product of the polynomial is; (x²-tile - 4·x-tiles + 3-tiles) = (x² - 4·x + 3)

Multiplying the factors gives;

(x - 3) × (x - 1) = x² - 3·x - x + 4 = x² - 4·x + 3

The correct option is therefore;

The question options are;

x² - 2·x - 3 = (x - 3)·(x + 1)

x² - 4·x + 3 = (x - 3)·(x - 1)

x² + 2·x + 3 = (x + 3)·(x - 1)

x² + 4·x - 3 = (x + 3)·(x + 1)

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Answer:

t ≥ 8.1

Step-by-step explanation:

70 ≤ 10t-11

Move the 11 to the left side of the equation, changing the sign (of the 11) to do that.

70 + 11 ≤ 10t

81 ≤ 10t

Divide both sides by 10.

8.1 ≤ t

I flip the equation so the variable is on the left: t ≥ 8.1

Since you didn't include the answer options, I'm not sure if they wanted us to solve for x and write the answer like that, or to write it like this:

t= [8.1, infinity)

Hope this helps! If it's possible though next time could you include the answer options for the problem answerers? It would help so much as we wouldn't have to do extra work and we'd know what format they want the answer to be in.

Answer:

The answer is B, which shows a constant of proportionality

Answer:

B.

Step-by-step explanation:

This is proportional because for every one cup there are 3 oranges used.

Step-by-step explanation:

101° = (6x + 5)° (by F angles)

Therefore 6x = 96 and x = 16.

Answer:

X=16

Step by Step explanation:

We want to know what x is

We would have to make an equation

REMEMBER: *Any 4 angles has to equal to 360 degrees*

Its pretty easy to remember

Triangles: All interior angles must add up to 180

4 angles shapes: All interior angles must add up to 360

If any shape has more than 4 angles, calculate how many angles there are and multiply them by 90

Okay so this “shape” has only 1 angle given And that would be 101

So we know right away that the angle vertical to it (angle 8) is also 101

Now we know two sides and since the other two unknown sides are vertical so they have to be equal, we really only have to focus on the 101 angle.

So we know that 2 ngles are 101

Thats all we need to know

make them equal

6x+5=101

Now sole and you would get 16

The probability that exactly 5 out of 6 randomly selected Americans donated money to a charitable cause in 2021 is approximately 0.3931, or 39.31%.

The probability of a single American donating money to a charitable organization in 2021 is given as 81%. Therefore, the probability of an individual not donating is 1 - 0.81 = 0.19.

To calculate the probability of exactly 5 out of 6 Americans donating, we can use the binomial probability formula:

P(X = k) = (n C k) * p^k * (1 - p)^(n - k)

Where:

P(X = k) represents the probability of exactly k successes (donations).

(n C k) is the binomial coefficient, which represents the number of ways to choose k successes from n trials.

p is the probability of success (donation) in a single trial.

(1 - p) represents the probability of failure (not donating) in a single trial.

n is the total number of trials (sample size).

In this case, n = 6, k = 5, p = 0.81, and (1 - p) = 0.19.

Plugging in these values, we can calculate the probability:

P(X = 5) = (6 C 5) * (0.81)^5 * (0.19)^(6 - 5)

P(X = 5) = 6 * (0.81)^5 * (0.19)^1

P(X = 5) = 0.3931

Therefore, the probability that exactly 5 out of 6 randomly selected Americans donated money to a charitable cause in 2021 is approximately 0.3931, or 39.31%.

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The Lower Control Limit (LCL) of a 3.6 control chart is 44.1.

To construct an appropriate statistical process control chart for the average time taken in the execution of a set of computerized protocols, data was collected for 30 samples each of size 40, and the mean of all sample means was found to be 50. The standard deviation of the sample-means was known to be 4.5 seconds.

A control chart is a statistical tool used to differentiate between common-cause variation and assignable-cause variation in a process. Control charts are designed to detect when process performance is stable, indicating that the process is under control. When the process is in a stable state, decision-makers can make informed judgments and decisions on whether or not to change the process.

For a sample size of 40, the LCL formula for the x-bar chart is: LCL = x-bar-bar - 3.6 * σ/√n

Where: x-bar-bar is the mean of the means

σ is the standard deviation of the mean

n is the sample size

Putting the values, we have: LCL = 50 - 3.6 * 4.5/√40

LCL = 50 - 2.138

LCL = 47.862 or 44.1 (approximated to one decimal place)

Therefore, the LCL of a 3.6 control chart is 44.1.

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Yes, the students will send more email to their professors than students in 10 am chemistry class.

The term hypothesis is states that it is an assumption or an idea that is proposed for the sake of argument so that it can be tested to see if it might be true.

Here we have given that the number of emails sent during the semester is recorded for 25 students in the 8 am class and 35 students in the 10 am class and the average for the 8 am students (group 1) is 5.1 emails and the average for the 10 am students (group 2) is 4.4 emails.

Here we need to find whether the students in 8 am chemistry class send more email to their professors than students in 10 am chemistry class.

While we looking into the given question, we know that  

Number of students in 8 am = 25

Number of students in 10 am = 35

Average for the 8 am students = 5.1 email

Average for the 10 am students = 4.4 email

As per compare the average amount of emails, we have identified that the amount email in 8 is higher then 10 am.

Therefore, at 8 am, the emails are send larger.

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Answer:fixed ratio

Step-by-step explanation: :)

This is an illustration of a fixed ratio reinforcement schedule: after a predetermined number of responses, Frances is given a reward (in this case, $1). (every pound of worms).

An example of a reinforcement plan utilized in the behavioral psychology concept of operant conditioning is a fixed ratio reinforcement schedule. A reward or reinforcement is delivered according to this schedule after a predetermined number of actions or responses. As an illustration, a rat might receive a food pellet after every 10 lever presses.

Fixed ratio schedules work well for encouraging high response rates since the subject is driven to keep up the activity in order to earn the reward. Yet, if the reinforcement is stopped, the behavior can become less frequent or cease entirely.

Fixed ratio schedules can also cause behaviors to become rigid or stereotyped because the subject may start concentrating only on the number of responses required to earn the reward and stop considering other options or actions.

Overall, fixed ratio reinforcement regimens can be helpful in teaching both humans and animals to carry out particular tasks, but they should be utilized with caution and consideration for any unexpected consequences.

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Answer:

y=3x-13

Step-by-step explanation:

Since the parallel equations have equal slope.

The equation of line parallel to y=3x+7 will be y=3x+k.

(4,-1) lies in the line so it satisfies the equation amd we get the value of k as -13 and finally we substitute the value of k in the eqn and we finally get the equation as 3x-y-13=0 or you can also write it as y=3x-13

Answer:

D

Step-by-step explanation:

i think its d im not sure

Answer:

FOR EVERY 1 CLASSROOMS THERE ARE 50 STUDENTS, SO 50 STUDENTS IN EACH CLASSROOM the ration would be 50:1

Step-by-step explanation:

Answer:

I think its 50:1

Step-by-step explanation:

Answer:

4.25 feet

Step-by-step explanation:

3.75+0.5=4.25 ft

The number of ways to select a committee of four Republicans, three Democrats, and two Independents from a group of 10 distinct Republicans, 12 distinct Democrats, and four distinct Independents is: 277,200.

This can be calculated using the formula for combinations, which states that the number of ways to choose k objects from a set of n distinct objects is given by

nCk = n! / (k! * (n-k)!),

where ! denotes the factorial function.

In this case, we use this formula to calculate the number of ways to choose four Republicans from a group of 10, three Democrats from a group of 12, and two Independents from a group of 4.

We then multiply these values together to get the total number of possible committees:

(10C4) x (12C3) x (4C2) = 210 x 220 x 6 = 277,200

The final answer is 277,200.

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Given the function:

we know that the derivative of g(x) is:

then, the slope at point (pi/2,0) is:

therefore, the slope is g'(pi/2) = -1

Answer:b

Step-by-step explanation:

The length of each song is 5 minute long.

The unitary technique involves first determining the value of a single unit, followed by the value of the necessary number of units.

For example, Let's say Ram spends 36 Rs. for a dozen (12) bananas.

12 bananas will set you back 36 Rs. 1 banana costs 36 x 12 = 3 Rupees.

As a result, one banana costs three rupees. Let's say we need to calculate the price of 15 bananas.

This may be done as follows: 15 bananas cost 3 rupees each; 15 units cost 45 rupees.

Given:

Jared listened to his 5 favorite songs on his mp3 player for 25 minutes.

So, So, the length of each song

= 25/ 5

= 5

Thus, each song is 5 minutes long.

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Answer:

The answer is x > 7

Step-by-step explanation:

Step 1: Simplify both sides of the inequality.

−3.2x+0.8<−2.8x−2

Step 2: Add 2.8x to both sides.

−3.2x+0.8+2.8x<−2.8x−2+2.8x

−0.4x+0.8<−2

Step 3: Subtract 0.8 from both sides.

−0.4x+0.8−0.8<−2−0.8

−0.4x<−2.8

Step 4: Divide both sides by -0.4.

−0.4x /−0.4 < −2.8 /−0.4

x > 7

this should help.

the answer is x>7 but the work is in the picture

Answer:

1/2 probably

Step-by-step explanation:

Answer:

The first one is B. 11.75

The second one is A. 4

Step-by-step explanation:

In order to find how many liters (L) of paint he used you need to do 2.5*5.5=13.75 Then to find out how much he has left you do 25-13.75=11.75 So your answer is 11.75.

The second one you have to do the reverse. So since it says 4*_=48, you do 48÷4=_=12. Then since it says 12*1/3=_ You can do 12÷3=_=4 So your answer is 4.

Answer:

c. Yes because ∠2 and ∠6 are congruent.

Step-by-step explanation:

From the picture attached,

m(∠2) = m(∠3) = m(∠6) = 40°

m(∠1) = 140°

Since (∠2 ≅ ∠6) (corresponding angles)

Therefore, by the converse theorem of corresponding angles lines c and d are parallel.

Option c is the answer.

Answer:

f(10) = -130

Step-by-step explanation:

f(x) = -x² - 3x

f(10) = -(10)² - 3(10)

f(10) = -100 - 30

f(10) = -130

Answer:

158

Step-by-step explanation:

There is a pattern.

77 - 55 = 24

110 - 79 = 31

Which has no pattern.

But when you subtract by 55

110 - 55 = 55

Then you multiply 70 with 2

70 x 2 = 158

Hope this helps!

Answer:

4/15 of an inch

Step-by-step explanation:

=> At that rate, the distance the worm would go in 1 minute is:

D = (4/5)/3 = 4/(5x3) = 4/15 of an inch

Hope this helps

Have a great day

~Zero

Answer:

4/15 of an inch

Step-by-step explanation:

A worm wriggled forward 4/5 of an inch in 3 minutes.

=> At that rate, the distance the worm would go in 1 minute is:

D = (4/5)/3 = 4/(5x3) = 4/15 of an inch

Answer:

X: time mowing lawn (325 Cal/hour)

Y:time raking leaves (275 Cal/hour)

325X + 275Y = 885

3 - X = Y

(1.2 hours mowing the lawn, 1.8 hours raking leaves)

Step-by-step explanation:

you forgot to include vital information. When ahmit rakes leaves, he loses 275 calories per hour. When he mows the lawn, he loses 325 calories per hour according to the textbook you got this from. If he works for 3 hours, you need to find the portion of each activity he did by working backwards from the total calories lost, 885.

Answer:

The answer is C 39 and i am very sure and positive you will know

Step-by-step explanation:

Answer:

Step-by-step explanation:

What are the main categories of electors in India?

Ans.- There are 3 categories of electors in India: –

(i)    General electors,

(ii)    Oversees   (NRI)   electors    -    (   Kindly   refer   to   ‘Frequently   Asked Questions – Overseas Electors’),

(iii)    Service Electors - (Kindly refer to ‘Frequently Asked Questions – Service Electors’).

Q2. Who is eligible to be registered as a general elector?

Ans. Every Indian citizen who has attained the age of 18 years on the qualifying date i.e. first day of January of the year of revision of...

faqs

resident electors

a) the 90% confidence interval for the population standard deviation σ is approximately (7.784, 21.397).

b) the confidence interval does contradict the developer's claim, indicating that the population standard deviation may not be equal to 14 as claimed.

(a) For a 90% confidence level and n-1 degrees of freedom (n = sample size), the chi-square values are obtained from the chi-square distribution table.

In this case, with 14 degrees of freedom, the lower chi-square value is approximately 5.629 and the upper chi-square value is approximately 25.193.

Calculate the lower and upper limits of the confidence interval for σ:Lower Limit = √\(((n-1) * s^2\) / upper chi-square value).

Upper Limit = √\(((n-1) * s^2\) / lower chi-square value)

Lower Limit = √\(((14) * (11^2) / 25.193)\)

Upper Limit = √\(((14) * (11^2) / 5.629)\)

Evaluate the lower and upper limits:

Lower Limit ≈ 7.784

Upper Limit ≈ 21.397

Therefore, the 90% confidence interval for the population standard deviation σ is approximately (7.784, 21.397).

(b) The developer of the test claims that the population standard deviation is σ = 14.

To determine if the confidence interval contradicts this claim, we need to check if the claimed value of σ falls within the confidence interval.

In this case, the claimed value of σ = 14 does not fall within the confidence interval of (7.784, 21.397).

Therefore, the confidence interval does contradict the developer's claim, indicating that the population standard deviation may not be equal to 14 as claimed.

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The number of school districts in the United States is currently approximately 13,500. This answer is option D in the given choices.

The number of school districts in the United States can vary depending on how they are defined, but according to the National Center for Education Statistics (NCES), there were 13,500 public school districts in the U.S. as of the 2018-2019 academic year. These districts serve approximately 50.7 million students in over 98,000 public schools. It is important to note that this number only includes public school districts and does not include private or charter schools.

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