Please answer correctly !!!!!! Will mark brainliest Answer !!!!!!!!!!!

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

Answer:

d. contour ploughing

hope it helpss

The volume of the helium-filled balloon at 0.855 atm and 10.0 °C will be approximately 42.81 L, calculated using the ideal gas law equation.

To compute this problem, we can use the ideal gas law, which states that PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature in Kelvin.

First, we need to convert the initial temperature of 25 °C to Kelvin:

T1 = 25 + 273.15 = 298.15 K

Next, we can rearrange the ideal gas law equation to solve for V2:

V2 = (P1 * V1 * T2) / (P2 * T1)

We have:

P1 = 1.08 atm (initial pressure)

V1 = 50.0 L (initial volume)

P2 = 0.855 atm (final pressure)

T2 = 10.0 °C (final temperature)

Converting the final temperature to Kelvin:

T2 = 10 + 273.15 = 283.15 K

Substituting the values into the equation:

V2 = (1.08 * 50.0 * 283.15) / (0.855 * 298.15)

V2 ≈ 42.81 L

Therefore, the volume of the helium-filled balloon at 0.855 atm and 10.0 °C will be approximately 42.81 L.

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If the mass of the helicopter is m = 2.7 x 10⁴ kg and the position of the helicopter is given by the vector \(r(t) = 0.02t^3 \hat{i} + 2.2t \hat{j} - 0.06t^2 \hat{k}\), then the net force on the helicopter at t=3.4s is \(F_{net}= 1.1016 \hat{i} - 0.324 \hat{k}\) kN

To find the net force follow these steps:

Thus, the net force on the helicopter at t = 3.4 s is \(F_{net}= 1.1016 \hat{i} - 0.324 \hat{k}\) kN.

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The type of transformation that triangle A'B'C' undergoes is a translation.

Triangle ABC undergoes a transformation to form triangle A'B'C'. The type of transformation that triangle ABC undergoes is a reflection.

If triangle A'B'C' undergoes a transformation to form triangle A''B''C'', the type of transformation that triangle A'B'C' undergoes is a translation.

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Answer:

21+v=52

Step-by-step explanation:

Sum means the result of two numbers added together

Answer:

Step-by-step explanation:

Step-by-step explanation:

Option c, d,and f is correct

The probability of 12 successes in 30 trials with a 0.20 probability of success on a single trial is approximately 0.0139.

To find the probability of x successes in n trials with a probability p of success on a single trial, you can use the binomial probability formula:
P(x) = C(n, x) * (p^x) * ((1-p)^(n-x))
where C(n, x) is the number of combinations of n items taken x at a time.
In this case, n = 30, x = 12, and p = 0.20. Plug these values into the formula:
P(12) = C(30, 12) * (0.20^12) * ((1-0.20)^(30-12))
Calculate C(30, 12), which is the number of combinations of 30 items taken 12 at a time:
C(30, 12) = 30! / (12! * (30-12)!) = 86493225
Now, calculate the rest of the equation:
P(12) = 86493225 * (0.20^12) * (0.80^18) ≈ 0.0139

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As seasonal index of 1 indicates that the season is average. This means that the data for the season falls in line with what is expected based on historical trends and patterns.

Seasonal indexes are used to adjust data for seasonal variations so that the underlying trends can be analyzed accurately. For example, a retailer may use seasonal indexes to adjust their sales data to account for the higher sales volume during the holiday season.

It is important to understand seasonal indexes when analyzing data and making business decisions based on seasonal trends.

A seasonal index of 0.5 would indicate that the season is weaker than average, while a seasonal index of 10 or 100 would suggest that the season is much stronger than average.

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A seasonal index is a tool used in data analysis to measure the level of seasonal variation in a given time series. An index of 1 indicates that the season is average, meaning that there is no significant deviation from the expected seasonal pattern.

A seasonal index is a numerical value that represents the relative level of a variable, such as sales or demand, during a particular season. It is usually represented as a ratio or percentage that compares the actual value of a variable to its expected value during a particular season.  An index below 1 means that the season is below average, while an index above 1 means that the season is above average.

A seasonal index of 1 (E) indicates that the season is average because it implies that the observed value during that season is equal to the overall average for all seasons. In this case, there is no significant seasonal variation or deviation from the mean.

Therefore, in the given question, the correct answer is E) 1, which means that the season is average and there is no significant deviation from the expected seasonal pattern. The use of seasonal indices is crucial in predicting future trends, identifying anomalies, and making informed decisions in various industries, such as agriculture, retail, and tourism.

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Answer:

idk

Step-by-step explanation:

Answer:

HEy

Step-by-step explanation:

Okay, here are the steps:

* Hassam buys 2 adult tickets and 2 child tickets

* Let's assume:

** Adult ticket price = $50

** Child ticket price = $25

* So total ticket price = 2 * $50 + 2 * $25 = $200

* The booking fee is 5% of the total cost

* 5% of $200 is $10

* So total payment = $200 + $10 = $210

Therefore, the total Hassam pays altogether is $210

Answer:

She sold $1800 worth.

Step-by-step explanation:

290-200=90

90 x 20 because 100÷5=20

90 x 20 = 1800

$1800

Answer:

square root of 325

Step-by-step explanation:

Answer:

Step-by-step explanation:

You had the first part of the first question correct. The answer is 100:64

The sides of the squares

Area of e = 69% more than area of area of f

e^2: f^2 = ( 1 + 69/100 ) / 1

e^2 : f^2 = (1.69)/1            Take the square root of both sides

e:f  = 1.3:1

Answer:

  $35.10

Step-by-step explanation:

The discount amount is subtracted from the original price to find the discounted price. That math can be done a couple of different ways.

  discount = discount rate × original price

  sale price = original price - discount

Or, these equations can be combined:

  sale price = original amount × (1 - discount rate)

__

Using the latter equation, we get ...

  sale price = $45.00 × (1 - 0.22) = $45.00 × 0.78 = $35.10

Leia will be paying $35.10 for the jacket.

Answer:

254.34 in^2

Step-by-step explanation:

To calculate the Area of Circle is πr^2

r is the radius of the circle

In this problem, the diameter is given which is 18 in. To find the radius you have to divide the diameter by 2.

18/2 = 9 in is our radius

Area of Circle = π9^2

                       = 3.14*81

                       = 254.34 in^2                    

If a relationship between two variables is called statistically significant, it means that the investigators think the variables are a. related in the population represented by the sample.

If a relationship between two variables is called statistically significant, it means that the investigators think the variables are related in the population represented by the sample. This means that the results of the study can be generalized to the larger population with a high degree of confidence.
Statistical significance refers to the likelihood that the results of a study are not due to chance. When researchers perform a statistical test, they calculate the probability that the observed relationship between the variables occurred by chance alone. If this probability is very low (usually less than 5%), then the results are considered statistically significant.
It's important to note that statistical significance does not necessarily mean that the relationship between the variables is strong or important. It simply means that the relationship is unlikely to be due to chance. Therefore, choice D ("very important") is not the correct answer. Choice B ("not related in the population represented by the sample") is also incorrect, as a statistically significant relationship indicates that the variables are related. Choice C ("related in the sample due to chance alone") is also incorrect, as statistical significance means that the relationship is not due to chance alone.

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Answer:

0, 5.5

Step-by-step explanation:

when they ask for a y-intercept, x is always zero, so now we eliminate two of the answers, and we will only have (0, 1) or (0, 5.5). At the beginning of the question it said a plant is currently at 5.5, so it started as 5.5 (0, 5.5)

so THE ANSWER IS  (0, 5.5)

PLZ MARK ME AS BRAINLIEST.

Answer:

x2+x-4=0

Step-by-step explanation:

the standard deviation of a sample mean, can be calculated by dividing the population standard deviation, σ, by the square root of the sample size, n.

In statistics, the standard deviation measures the dispersion or variability of a set of data. When calculating the sample mean, from a sample of data, the standard deviation of the sample mean, is a measure of how much the sample means vary from the true population mean.The standard deviation of the sample mean is determined by dividing the population standard deviation, σ, by the square root of the sample size, n. Mathematically, it can be expressed as:

sample mean = σ / √n,Where σ is the population standard deviation and n is the sample size.

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Null space is defined as the set of vectors 'x' in Rn that are solutions to the matrix equation A*x = 0. False: The set of all vectors of the form 1 x y where x and y range over all real numbers is a subspace of R3. True: The set of all vectors of the form 0 x y where x and y range over all real numbers is not a subspace of R3.

1) False Null space can consist of zero vector only. A null space is defined as the set of vectors 'x' in R^n that are solutions to the matrix equation A*x = 0.

2) True The number of columns can never be less than the number of rows of the matrix in order for a null space to exist, hence a 4x3 matrix may have the null space of only the zero vector.

3) True The set of all vectors of the form 1 x y where x and y range over all real numbers, is a subspace of R^3. This set contains zero vector because for x=0 and y=0, we get the vector as [0,0,0]. Hence it is a subspace of R^3.

4) False The set of all vectors of the form 0 x y where x and y range over all real numbers, is not a subspace of R^3 as it doesn't contain zero vector. To have a subspace of R^3, it should contain a zero vector.

So, the correct options are:1) False2) True3) True4) False

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18.715 is the variance of the given distribution.

The given frequency distribution table is as follows:

X Freq(X)

11 3

12 8

13 3

14 4

15 2

To calculate the mean of the distribution, the following steps are taken:

Mean, μ = Σ[X.Freq(X)] / ΣFreq(X)

= (11×3 + 12×8 + 13×3 + 14×4 + 15×2) / (3 + 8 + 3 + 4 + 2)

= (33 + 96 + 39 + 56 + 30) / 20

= 254 / 20

= 12.7

Now, let's calculate the variance:

Variance, σ² = Σ[X². Freq(X)] / ΣFreq(X) - μ²

First, we need to calculate X².Freq(X) for each value of X:

X Freq(X) X² Freq(X)

11 3 363

12 8 1536

13 3 507

14 4 784

15 2 450

Now, we can calculate the variance:

σ² = Σ[X². Freq(X)] / ΣFreq(X) - μ²

= (363 + 1536 + 507 + 784 + 450) / 20 - 12.7²

= 3640.1 / 20 - 161.29

= 180.005 - 161.29

= 18.715 (rounded to three decimal places)

Therefore, the variance of the given distribution is 18.715.

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Complete Question:

Emily and Zach have two different polynomials to multiply: Polynomial product A: (4x2 – 4x)(x2 – 4) Polynomial product B: (x2 + x – 2)(4x2 – 8x) They are trying to determine if the products of the two polynomials are the same. But they disagree about how to solve this problem.

Answer:

\(A = B\)

Step-by-step explanation:

See comment for complete question

Given

\(A: (4x^2 - 4x)(x^2 - 4)\)

\(B: (x^2 + x - 2)(4x^2 - 8x)\)

Required

Determine how they can show if the products are the same or not

To do this, we simply factorize each polynomial

For, Polynomial A: We have:

\(A: (4x^2 - 4x)(x^2 - 4)\)

Factor out 4x

\(A: 4x(x - 1)(x^2 - 4)\)

Apply difference of two squares on x^2 - 4

\(A: 4x(x - 1)(x - 2)(x+2)\)

For, Polynomial B: We have:

\(B: (x^2 + x - 2)(4x^2 - 8x)\)

Expand x^2 + x - 2

\(B:(x^2 + 2x - x - 2)(4x^2- 8x)\)

Factorize:

\(B:(x(x + 2) -1(x + 2))(4x^2- 8x)\)

Factor out x + 2

\(B:(x -1) (x + 2)(4x^2- 8x)\)

Factor out 4x

\(B:(x -1) (x + 2)4x(x- 2)\)

Rearrange

\(B: 4x(x - 1)(x - 2)(x+2)\)

The simplified expressions are:

\(A: 4x(x - 1)(x - 2)(x+2)\) and  

\(B: 4x(x - 1)(x - 2)(x+2)\)

Hence, both polynomials are equal

\(A = B\)

if the bacterial is doubling, that means the growth rate is 100%, or 100% plus whatever it was before, so

\(\textit{Periodic/Cyclical Exponential Growth} \\\\ A=P(1 + r)^{\frac{t}{c}}\qquad \begin{cases} A=\textit{current amount}\\ P=\textit{initial amount}\dotfill &1500\\ r=rate\to 100\%\to \frac{100}{100}\dotfill &1\\ t=minutes\\ c=period\dotfill &30 \end{cases} \\\\\\ A=1500(1 + 1)^{\frac{t}{30}}\implies A=1500(2)^{\frac{t}{30}} \\\\\\ \stackrel{\textit{after two hours, or 120 minutes, t = 120}~\hfill }{A=1500(2)^{\frac{120}{30}}\implies A=1500(2)^4\implies A=24000}\)

\(~\dotfill\\\\ \stackrel{\textit{current amount being 12000}}{12000=1500(2)^{\frac{t}{30}}}\implies \cfrac{12000}{1500}=(2)^{\frac{t}{30}}\implies 8=(2)^{\frac{t}{30}}\implies 8=\sqrt[30]{2^t} \\\\\\ 8^{30}=2^t\implies (2^3)^{30}=2^t\implies 2^{90}=2^t\implies 90=t\)

Let's factor both expressions and see which ones are repeated:

• For gh⁵

We can rewrite this expression as g×h×h×h×h×h

• For 10g⁵h⁴

We can rewrite this expression as 10×g⁴×g×h×h×h×h

As you can see, both expressions have the factor g×h×h×h×h, we can rewrite it as gh⁴.

Then, the greatest common factor of the monomials is gh⁴.

The average breaths taken per minute by the fish is 22.53. This is obtained using the previous knowledge of average.

What do you mean by average?

An average is a single number that is used to represent an entire group of things. Averages are calculated by dividing the sum of all values by the total number of values.

Calculation of average number of breaths taken by a fish per minute

Given:

Breaths in 1 minute are 65

Breaths in 2 minutes are 73

Breaths in 3 minutes are 67

Breaths in 4 minutes are 71

Breaths in 5 minutes are 62

Total breaths = 65 + 73 + 67 + 71 + 62

= 338

Total time taken = 1 + 2 + 3 + 4 +5

= 15 minutes

The average number of breaths = total breaths / total time taken

= 338 / 15

= 22.53 breaths per minute

Hence, the average breaths taken per minute by the fish is 22.53.

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Answer: it is 32.6

Step-by-step explanation:

The orginal number that Gavin was thinking of is 32.60.

Let the orginal number be represented with y

Gavin adds 9 to the original number: 9 + y

The answer is doubled: 2(9 + y)

The answer is 83.2: 2(9+y) = 83.2

In order to determine the value of y, take the following steps:

Divide both sides of the equation by 2

9 + y = 41.60

Subtract 9 from both sides of the equation

y = 41.60 - 9

y = 32.60

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Answer: 48 miles

Because north is straight from the starting point and you traveled 48 miles north so 48

Answer:

50 miles

Step-by-step explanation:

If you draw the shape

you'll roughly get the above mentioned one..

so it's a right angle triangle now

using Pythagoras relationship

48^2+14^2=x^2

2304+196=x^2

2500=x^2

x= 50

straight line distance aka displacement is 50 miles

Answer:

5 5/12

Step-by-step explanation: