What is Field variant vs invariant?

Answer:

70 is the right answer....

Answer:

70 ways

Step-by-step explanation:

8 C 4 =   8 ! / ( 4! * 4!) = 70 ways

Answer: A

Step-by-step explanation:

Hope this helps

Answer:

A.

Step-by-step explanation:

Because we know the line has a slope of positive 3, this means we can cross out Graphs C and D because they have negative slopes. We also know that the line has a y-intercept of 2. This means that Graph B cannot be the right answer because it has a y-intercept of 3. This leaves us with Graph A which is the answer.

Answer:

Step-by-step explanation:

0.25×7+0.05×7+0.10d=2.70

7(0.25+0.05)+0.10d=2.70

7(0.30)+0.10d=2.70

2.10+0.10d=2.70

0.10d=2.70-2.10

0.10d=0.60

d=0.60/0.10=6

Hence D

The forecast for May using a five-month moving average is 39 (Option E).

Moving average is used for smoothing out time series data to find any trends or cycles within the data. A five-month moving average is the average of the past five months. To calculate the moving average, add up the sales for the previous five months and divide it by five.

According to the question, the sales for the previous five months are: Nov. 39 Dec. 27 Jan. 40 Feb. 42 Mar. 41 April 47

We have to add the sales of these five months, which gives:

27 + 40 + 42 + 41 + 47 = 197

To find the moving average for May, we divide this sum by 5:

197 / 5 = 39.4

Since we have to round the answer to the nearest whole number, we round 39.4 to 39, which is option E.

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9514 1404 393

Answer:

  0.09

Step-by-step explanation:

The probability of the complement of A is the difference between 1 and P(A):

  \(P(A^c)=1-P(A)=1-0.91\\\\\boxed{P(A^c)=0.09}\)

Answer:

0.09

Step-by-step explanation:

The answer will be ,

= 1 - 0.91

= 0.09

Answer:

2x^(3) - 4x^(2) - 4x - 4.

Step-by-step explanation:

2x^(3)-3x^(2)-3x^(2)+2x^(2)-4x-9

Bring like terms together:

= 2x^(3) - 3x^(2) - 3x^(2) + 2x^(2) - 4x + 5 - 9

Now simplify:

= 2x^(3) - 4x^(2) - 4x - 4.

Answer:

\(2x^3-4x^2-4x-4\)

Step-by-step explanation:

Subtract the numbers

\(2x^3-3x^2+5-3x^2+2x^2-4x-9\)

\(2^3-3^2-4-3^2+2^2-4\)

Combine like terms

\(2x^3-3x^2-4-3x^2+2x^2-4x\)

\(2^3-4^2-4-4\)

Rearrange terms

\(2x^3-4x^2-4-4x\)

\(2^3-4^2-4-4\)

Solution:

\(2x^3-4x^2-4x-4\)

No, there is significant difference in the use of e readers by different age groups.

Given sample 1 ( 29 years old) \(n_{1}\)=628, \(p_{1}\)=7%, sample 2( 30 years old)\(n_{2}\)=2309, \(p_{2}\)=0.11.

We have to first form hypothesis one null hypothesis and other alternate hypothesis.

\(H_{0}:\)π1-π2=0

\(H_{1}:\)π1-π2≠0

α=0.05

Difference between proportions \(p_{1}-p_{2} =-0.04\)

\(p_{d}=0.07-0.11=-0.04\)

The pooled proportion needed to calculate standard error is:

\(p=(X_{1} -X_{2} )/(n_{1} +n_{2} )\)

=(44+254)/(628+2309)

=0.10146

The estimated standard error of difference between means is computed using the formula:

\(S_{p_{1} -p_{2} }=\sqrt{p(1-p)/m_{1}+p(1-p)/n_{2} }\)

=\(\sqrt{0.101*0.899/628+0.101*0.899/2309}\)

=\(\sqrt{0.000143+0.00003}\)

=\(\sqrt{0.000173}\)

=0.01315

Z= Pd-(π1-π2)/\(S_{p_{1} -p_{2} }\)

=-0.04-0/0.013

=-3.0769

This test is a two tailed test so the p value for this test is calculated as (using z table)

p value:2 P(Z<-3.0769)

=2*0.002092

=0.004189

P value< significance level of 5%.

Hence there is enough evidence to show the claim that there is a significant difference in the use of e readers by different age groups.

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Question is incomplete as it also includes:

Significance level of 5%.

So, the formula that we're going to use is:

Compound interest

A = P(1 + r/n)ⁿˣ

Where

A = amount

P = principal = $100

r = rate = 8% = 8 / 100 = 0.08

x = time

In this case, n=4 since it is being compounded quarterly, so:

The answer is $126.82.

Answer:

x=-2

Step-by-step explanation:

Answer:

D) 29

Step-by-step explanation:

Step 1 solve for x

Complementary angles add up to 90 degrees.

This means that ∠A + ∠B = 90

If ∠A = 2x + 7 and ∠B = 6x - 5

Then 2x + 7 + 6x - 5 = 90

We now solve for x

2x + 7 + 6x - 5 = 90

==> combine like terms

8x + 2 = 90

==> subtract 2 from both sides

8x = 88

==> divide both sides by 8

x = 11

Step 2 , plug in x to find ∠A

Now to find ∠A we plug in the value of x into 2x + 7

∠A = 2x + 7

==> plug in x = 11

∠A = 2(11) + 7

==> multiply 2 and 11

∠A = 22 + 7

==> add 22 and 7

∠A = 29

Statistical hypothesis testing employs the null and alternate hypotheses.

The alternative hypothesis of a test expresses the prediction of an effect or relationship based on your study, while the null hypothesis of the test does not yet predict an effect or an association between the variables.

A statement that there is no relationship between two variables is called a null hypothesis. Another hypothesis is that the two variables are statistically correlated.

Alternative unilateral (directional) or the bilateral (non-directional) hypotheses are also possible. Simple, complex, true, and false are the four main categories of null hypotheses. If the p-value is greater than the statistical significance level, null hypothesis is preferred.

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The Value of A=2x³ - 7x + 1 and B =-8x² + 9x - 2 then value of the expression 2(A- B) is equal to 4x³ +16x² -32x +6.

As given in the question,

Value of A=2x³ -7x+1

Value of  B =-8x² + 9x - 2

Value of the expression is given by

2(A - B)

=2{(2x³ - 7x + 1) - (-8x² + 9x - 2)}

Open the parenthesis we get

 2(2x³ - 7x + 1 +8x² - 9x + 2)

=2(2x³ + 8x² - 16x +3)

=4x³ +16x² -32x +6

Therefore, the value of A= 2x³ - 7x + 1 and B=-8x² + 9x -2 then the value of the expression 2(A - B) is equal to 4x³ + 16x² -32x + 6.

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Answer:

x=4

Step-by-step explanation:

5 + 9 = 6x - 10

14 = 6x - 10

6x = 24

x = 4

Answer:

\(6x - 10 = 5 + 9 \\ 6x - 10 = 14 \\ 6x = 14 + 10 \\ x= \frac{24}{6} \\ x = 4\)

Option 2 is correct that is 1.79

When presented in ascending order, the value that 75% of data points fall within is known as the higher quartile, or third quartile (Q3).

The quartiles formula is as follows:

Upper Quartile (Q3) = 3/4(N+1)

Lower Quartile (Q1) = (N+1) * 1/3

Middle Quartile (Q2) = (N+1) * 2/3

Interquartile Range = Q3 -Q1,

1.74, 0.24, 1.56, 2.79, 0.89, 1.16, 0.20, and 1.84 are available.

Sort the data as follows: 0.20, 0.24, 0.89, 1.16, 1.56, 1.74, 1.84, 2.79 in ascending order of magnitude.

The data set has 8 values.

hence, n = 8; third quartile: 3/4 (n+1)th term

Q3 =3/4 of a term (9) term

Q3 =27/4 th term

Q3 = 1.74 + 1.84 / 2 (average of the sixth and seventh terms)

equals 1.76

Thus Q3 is 1.76 that is option 2

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The equilibrium point is (60, 2400), the consumer surplus at the equilibrium point is $48,000, and the producer surplus at the equilibrium point is $36,000.

(a) The equilibrium point occurs when the quantity demanded by consumers equals the quantity supplied by producers. To find this point, we need to set the demand function equal to the supply function and solve for x.

Demand function: D(x) = 3000 - 10x

Supply function: S(x) = 900 + 25x

Setting D(x) equal to S(x):

3000 - 10x = 900 + 25x

Simplifying the equation:

35x = 2100

x = 60

Therefore, the equilibrium point occurs at x = 60.

(b) Consumer surplus at the equilibrium point can be found by calculating the area between the demand curve and the equilibrium price. Consumer surplus represents the difference between the price consumers are willing to pay and the actual market price.

At the equilibrium point, x = 60. Plugging this value into the demand function:

D(60) = 3000 - 10(60)

D(60) = 3000 - 600

D(60) = 2400

The equilibrium price is $2400 per unit. To find the consumer surplus, we need to calculate the area of the triangle formed between the demand curve and the equilibrium price.

Consumer surplus = (1/2) * (2400 - 900) * 60

Consumer surplus = $48,000

(c) Producer surplus at the equilibrium point represents the difference between the actual market price and the minimum price at which producers are willing to sell their goods.

To find the producer surplus, we need to calculate the area between the supply curve and the equilibrium price.

At the equilibrium point, x = 60. Plugging this value into the supply function:

S(60) = 900 + 25(60)

S(60) = 900 + 1500

S(60) = 2400

The equilibrium price is $2400 per unit. To find the producer surplus, we need to calculate the area of the triangle formed between the supply curve and the equilibrium price.

Producer surplus = (1/2) * (2400 - 900) * 60

Producer surplus = $36,000

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Answer:

Step-by-step explanation:

To determine how many roots the function f(x) = x² - 4x - 5 has in common with another function, we need the equation of the other function. Without that information, we cannot determine the number of common roots. Please provide the equation of the other function, and I will be able to assist you further.

Hope this answer your question

Please rate the answer and

mark me ask Brainliest it helps a lot

Answer:

x = 2

y = 5

Step-by-step explanation:

We can say:

7 corresponds to y

(3 + 7.5) corresponds to 7.5

Plus, we can write a ratio

\( \frac{7}{y} = \frac{3 + 7.5}{7.5} \)

\( \frac{7}{y} = \frac{10.5}{7.5} \)

Cross multiplying, we can solve for "y",

\( \frac{7}{y} = \frac{10.5}{7.5} \)

\( \frac{7}{y} = 7 \times 7.5\)

y = 5

Again, using similarly, we can say:

(x + 5) corresponds to 5

(3 + 7.5 = 10.5) corresponds to 7.5

We can write a ratio:

\( \frac{x + 5}{5} = \frac{10.5}{7.5} \)

Cross multiplying and with the help of a but algebra, we can solve for "x", shown below:

7.5( x + 5) = 5 x 10.5

7.5x + 37.5 = 52.5

7.5x = 15

x = 2

The test statistic for testing equality of proportions is a z-score. It is calculated by dividing the difference in sample proportions by the standard error. The resulting z-score is then compared to critical values from the standard normal distribution to determine the statistical significance of the difference in proportions.

The correct options for the test statistic for testing the equality of proportions in a multiple-select question are:

Assumes when samples are large that p1 - p2 is normally distributed.

Uses a pooled proportion to calculate the standard error.

Is a z-score.

When the samples are large, the difference between two proportions (p1 - p2) can be approximated to follow a normal distribution. This assumption is based on the Central Limit Theorem.

To calculate the standard error in this scenario, a pooled proportion is used. The pooled proportion combines the proportions from both samples to estimate the common population proportion.

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Response rates in online surveys can be problematic due to the inadequate number of individuals in organized panels of respondents. An organized panel of respondents is a group of individuals who are willing to participate in online surveys, but there are limited numbers of such individuals.

The low response rates may lead to bias results, lower precision, and increased variability, resulting in inaccurate findings. Researchers might also find it challenging to calculate the response rates when the data collection vendor is recruiting participants outside the official online data collection vendor.Response rates are usually determined by the number of surveys completed in relation to the total number of potential respondents in a sample. The greater the number of individuals who complete the survey, the greater the response rate. There might be a problem calculating response rates if data collection vendors identify and target participation from specific groups of individuals.

The use of radio buttons, pull-down menus for responses, and the use of visuals have no effect on calculating response rates. However, graphics and animation might affect survey response rates if they cause technical problems or distraction to the respondent while participating in the survey.

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Answer:

y=0.25x^2−2x

Step-by-step explanation:

You have to use the disruptive property.

Answer:

IQR: is the length of the middle 50% of that interval of space

Step-by-step explanation:

In order to find IQR, subtract the third interquartile range - the first interquartile range

Answer:

B

Step-by-step explanation:

Edge 2021.

Answer:

range is the biggest number minus the smallest number

Step-by-step explanation:

so 5160-220=4940

Answer:

5.2603896e-14

Step-by-step explanation:

I think I'm sorry If I'm wrong

Therefore, Drug C has a stronger impact on cell survival compared to Drug A, making it the drug with the greatest effect.

To draw a representation of the survival curve and identify the drug that has the greatest effect on cell survival, we can use a graph where the x-axis represents the drug concentration in μg/ml, and the y-axis represents the percentage of cell survival.

Since Drug B has no IC90 value, it means that it does not reach a concentration that causes a 90% reduction in cell survival. Therefore, we can assume that Drug B has no significant effect on cell survival and can omit it from the survival curve.

For Drug A and Drug C, we have IC90 values of 5 and 3 μg/ml, respectively. This means that when the drug concentration reaches these values, there is a 90% reduction in cell survival.

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