Please help look at the picture

Answer:

W.E.B. Du Bois ( 1868-1963) was a civil rights activist who led the Niagara Movement and later helped

The value of n when t = 4 can be found using the given data points and an appropriate mathematical model. Since the problem does not specify the nature of the relationship between n and t, we will assume a linear relationship and use the slope-intercept form of a straight-line equation to find the value of n when t = 4.

First, we need to find the slope of the line. Using the two data points provided, we can calculate:

slope = (change in n) / (change in t) = (400 - 150) / (1 - 0) = 250

Next, we can use the point-slope form of a line equation to find the equation of the line:

n - 150 = 250(t - 0)
n = 250t + 150

Finally, we can substitute t = 4 into the equation to find the value of n:

n = 250(4) + 150 = 1150

Therefore, the value of n when t = 4 is 1150.

In summary, to find the value of n when t = 4, we assumed a linear relationship between n and t and used the two given data points to calculate the slope of the line. We then used the point-slope form of a line equation to find the equation of the line, and substituted t = 4 into the equation to find the value of n.

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The average deviation of predicted DVD sales from the actual is 12.2279 million dollars. F-critical value is 4.0785>4.0785 we can reject the null hypothesis. The 95% confidence interval is (17.1536, 25.1554). The 95% prediction interval for the given value of x is (-3.8623, 46.1713).

Estimate the level of DVD sales for movies, by using the amount of annual revenue  generated by the box office gross

We randomly selected a sample of 43 movies for the same year.

Excel  α = 0.05,  r^2 = 0.5123

=51.23%

51.23% of the DVD sales variation is explained by annual revenue.

SY.X = 12.2279.

Therefore, the average deviation of predicted DVD sales from the actual is 12.2279 million dollars.

b. The hypothesis being tested is:

Null Hypothesis, H0: β1 = 0

Alternative Hypothesis, H1: β1 ≠ 0

The test statistic, F = (6439.6133/1)/((12570.025 - 6439.6133)/(42 - 1)) = 43.07

The F-critical value is 4.0785.

Since 43.07 > 4.0785, we can reject the null hypothesis.

Therefore, we can conclude that there is a linear relationship between the revenues of DVD sales and the box-office gross.

c. y = bo + b1*x

y = 4.8445 + 0.1631*x

Put x = 100

y = 4.8445 + 0.1631*100 = 21.1545

The 95% confidence interval for the given value of x is:

= y ± t*s*\(\sqrt{0.026249}\)

= 21.1545 ± 2.020*12.2279*\(\sqrt{0.026249}\)

= (17.1536, 25.1554)

d.  The 95% prediction interval for the given value of x is:

= y ± t×s×\(\sqrt{}\)1 + hin [The t-value is calculated using =TINV(0.05,42-1) in Excel]

= 21.1545 ± 2.020*12.2279*\(\sqrt{1 + 0.026249}\)

= (-3.8623, 46.1713)

Therefore, the value is (-3.8623, 46.1713).

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Answer:

y = 3/4x-2

Step-by-step explanation:

Answer:

Y=3/4x-2

Step-by-step explanation:

Answer:

The annual interest rate is 12.05%

Step-by-step explanation:

Answer:

4 bags of takis

Step-by-step explanation:

take the $22 and subtract the $3.50 for the oreos, this leaves you with $18.50.

now, take the $18.50 and divide that by $4 (the amount takis cost) and you will find out how many bas he will he able to buy.

18.50/4 = 4.6 he will be able to buy only 4 bags and will have $2.50 left over

The largest open interval on which f is the antiderivative for f is called the indefinite integral of f, and it is denoted by ∫f(x)dx. This interval can be determined by finding all the antiderivatives of f and then taking the union of their domains. Note that the antiderivative of f is not unique, as it can differ by a constant, so the indefinite integral of f is only determined up to an arbitrary constant.
To find the largest open interval on which a function f is the antiderivative for f', we'll first need to know the function f' (the derivative of f). However, you didn't provide the function f' in your question.

To give you a general idea of how to approach this problem, follow these steps:

1. Given the function f'(x), find the critical points by setting f'(x) equal to 0 and solving for x.
2. Determine the intervals based on the critical points.
3. Check the behavior of f'(x) in each interval to see where it's continuous and increasing.
4. The largest open interval on which f is the antiderivative for f' will be the interval in which f'(x) is continuous and increasing.

If you provide the function f'(x), I can help you find the largest open interval for the antiderivative.

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Answer:

 -1

Step-by-step explanation:

Answer:

107

73

107

73

107

Answer:

Hey bro ur answer is 5-10g +20h

Step-by-step explanation:

5(1-2g+4h)=5 x 1- (5 x 2g) + ( 5 x 4h) = 5-10g +20h

The probability is 0.091125.

To calculate the probability of not flipping a head until the fourth flip, we need to consider the probability of flipping tails in each of the first three flips.

Given that the coin comes up tails 55% of the time, the probability of flipping tails on any given flip is 0.55. The probability of not flipping a head on a single flip is therefore 1 - 0.55 = 0.45.

Since we want to find the probability of not flipping a head until the fourth flip, we need to calculate the probability of flipping tails on each of the first three flips and then multiplying them together.

P(not flipping a head on the first flip) = 0.45

P(not flipping a head on the second flip) = 0.45

P(not flipping a head on the third flip) = 0.45

To find the probability of all three events occurring, we multiply the individual probabilities together:

P(not flipping a head until the fourth flip) = 0.45 * 0.45 * 0.45 = 0.091125

Therefore, the probability of not flipping a head until the fourth flip is approximately 0.091125, or 9.11%.

Correct Question :

A coin is unbalanced such that it comes up tails 55% of the time. What is the probability that you don't flip a head until the fourth flip?

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The numbers are 19 and 71 respectively

Let's call the smaller number "y".

The larger number would be 3 times y plus 14,

Which we can write as 3y + 14.

From the problem, we know that the sum of the two numbers is 90, so we can write an equation:

y + (3y + 14) = 90

Remove the brackets

y + 3y + 14 = 90

So, we have

4y + 14 = 90

4y = 76

Divide both sides by 4

y = 19

So the smaller number is 19 and the larger number is 3 times that plus 14, which is 3 * 19 + 14 = 71.

So the two numbers are 19 and 71.

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Answer:

The orientation of the figure has been changed by 90°, but the points are not all rotated around the same center. Translation is involved.

Step-by-step explanation:

Translation before rotation:

.. translate down 5 units

.. rotate counterclockwise 90° about the origin

Translation after rotation:

.. rotate counterclockwise 90° about the origin

.. translate right 5 units

This can also be accomplished by a double reflection.

.. reflect across the line y=x

.. reflect across the line x=2.5

Or,

.. reflect across the line y=2.5

.. reflect across the line y=x

A series is a summation of numbers in an infinite sequence that may either converge or diverge. When the absolute value of a series diverges, it does not indicate that it could be conditionally convergent.

What is a divergent series?

A divergent series is a sequence of partial sums that do not converge to a finite number. A series is divergent if its limit does not exist or if it goes to infinity.

There are two types of series divergences:

Absolute divergence:

A series is said to have absolute convergence when it converges absolutely.

If the sum of the absolute values of its terms is finite, a series is said to be absolutely convergent.

It is denoted by the series ∑ |a_n|.

Conditional divergence:

A series is said to have conditional convergence when it converges conditionally.

When a series converges, but the sum of the absolute values of its terms is infinite, it is called conditionally convergent.

It is denoted by the series ∑ a_n.

The answer to the given question is no;

if the absolute value of a series diverges, it does not indicate that it could be conditionally convergent.

When the absolute value of a series diverges, it indicates that it is non-convergent.

Therefore, it can be concluded that if a series has diverged, it is either absolutely or conditionally divergent.

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The probability of winning at least one award is 1 - 0.2373 = 0.7627 or 76.27%.

If the probability of winning an MTV music award after being nominated is 25%, the probability of not winning is 75%. Thus, the probability of not winning any of the five awards is (0.75)^5 = 0.2373.

As for how many awards Ariana Grande should expect to win, we can use the expected value formula: E(x) = n * p, where n is the number of trials (in this case, 5) and p is the probability of success (0.25). Therefore, E(x) = 5 * 0.25 = 1.25. So, Ariana Grande can expect to win about 1 award.

Finally, to calculate the standard deviation associated with this probability, we can use the formula: σ = sqrt(n * p * (1-p)). Plugging in the values, we get σ = sqrt(5 * 0.25 * 0.75) = 0.866. Therefore, the standard deviation associated with this probability is approximately 0.866.

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Answer:

The selling price of the bag is $22.5

Step-by-step explanation:

Buying Price = $25,

Selling Price = ?

Since they sold it at a loss of 10%,

So, they sold it for a price 10% less than the buying price,

or at 90% or 0.9 of the buying price,

so,

Selling Price = (0.9)(25) = $22.5

Answer:

6g -3g +6g -3g = 5+6-11-3+5-11

6g=-18

6g= -18 /÷6

g= -3

Step-by-step explanation:

if you could solve 3a and 3b, you can also solve 3c. it is the same principle.

x-intercepts means y = 0.

remember, a square root has always 2 results : a positive and a negative one.

3c

0 = -(x - 3)² + 25

(x - 3)² = 25

x - 3 = ±5

x1 = +5 + 3 = 8

x2 = -5 + 3 = -2

3a

0 = (x + 1)² - 4

4 = (x + 1)²

±2 = x + 1

x1 = +2 - 1 = 1

x2 = -2 - 1 = -3

3b

0 = (x + 2)² - 9

9 = (x + 2)²

±3 = x + 2

x1 = +3 - 2 = 1

x2 = -3 - 2 = -5

Answer:

x = 5; m<1 = 69

Step-by-step explanation:

We know that the two angles with degrees 20x+11 and 25x-14 are vertical angles and are thus congruent or equal.  Therefore, we can set the two angles equal to each other to find x:

\(20x+11=25x-14\\20x+25=25x\\25=5x\\5=x\)

If we plug in x into any of the two angles, we find the measure of both angles is 111.

The most probable relationship between angle 1 and the other two angles is supplementary, which means that the measure of angle 1 and any of the two angles beside it is 180.

To find m<1, represented as x, we can use the equation:

\(180=20(5)+11+x\\180=111+x\\69=x\)

Answer:

the slope is -1/3

Step-by-step explanation:

the average rate of change of the function g(x) over the interval [-5, 0] is 1.

To find the average rate of change of the function g(x) over the interval [-5, 0], we need to calculate the change in the function value and divide it by the change in the input value:

average rate of change = (change in g(x))/(change in x)

We can calculate the change in the function value as follows:

g(0) - g(-5) = [-0^2 - 6(0) + 11] - [(-(-5))^2 - 6(-(-5)) + 11]

= [11] - [6 - 11 + 11]

= [11] - [6]

= 5

We can calculate the change in the input value as follows:

0 - (-5) = 5

Therefore, the average rate of change of the function g(x) over the interval [-5, 0] is:

average rate of change = (change in g(x))/(change in x) = 5/5 = 1

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The intermediate value theorem, there exists some c in the interval (0, 1) such that f(c) = 0.

This means that the equation x³ + e^x - 2 = 0

has at least one solution in the interval (0, 1).

To show that the equation x³ + e^x - 2 = 0 has at least one solution, we can use the intermediate value theorem.

The intermediate value theorem states that if f is a continuous function on the interval [a, b], and if M is any number between f(a) and f(b), then there exists a number c in the interval (a, b) such that f(c) = M.

In our case, let's define

f(x) = x³ + e^x - 2.

Then we want to find a number M such that f(a) < M < f(b) for some values of a and b such that a < b.

If we can find such an M, then there must exist some c in the interval (a, b) such that

f(c) = M and

therefore f(c) = 0 (since we are looking for a solution to the equation

f(x) = 0).

Let's take a = 0 and b = 1.

Then f(a) = 1 + e^0 - 2 = 0 and

f(b) = 1 + e^1 - 2 > 0 (you can verify this by calculating f(1)).

Therefore, by the intermediate value theorem, there exists some c in the interval (0, 1) such that f(c) = 0.

This means that the equation x³ + e^x - 2 = 0

has at least one solution in the interval (0, 1).

We can repeat this process for different intervals to find more solutions to the equation if necessary.

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In the given scenario, the data described are of nominal type. Nominal data are variables that have distinct categories with no inherent order or rank among them.

They are categorical and do not have any numerical value, unlike ordinal data. In this case, the competitions at a company picnic are three-legged race, wiffle ball, egg toss, sack race, and pie eating contest. These competitions can be classified into distinct categories, and there is no inherent order or rank among them.

Therefore, the data described are of nominal type. The data described in the context of competitions at a company picnic are nominal. Nominal data refers to categories or labels that do not have any inherent order or ranking. In this case, the competitions listed (three-legged race, wiffle ball, egg toss, sack race, and pie eating contest) are simply different categories without any implied ranking or order.

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Answer:

1.5

Step-by-step explanation:

divide y by x

4.5/3=1.5

6/4=1.5

7.5/5=1.5

Answer:2,2

Step-by-step explanation:

Answer:

no because

Fractions and decimals are not integers. All whole numbers are integers (and all natural numbers are integers), but not all integers are whole numbers or natural numbers. For example, -5 is an integer but not a whole number or a natural number.

-6/3 is not an integer.

A number system is defined as a system of writing to express numbers.

We need to check whether -6/3 is a integer or not .

An integer is a whole number (not a fractional number) that can be positive, negative, or zero.

The given number is a fraction which is not comes under the integers.

All whole numbers are integers but  but not all integers are whole numbers or natural numbers.

If the fraction is simplified we get -2 which will be an integer but the fraction form is not considered as integer.

Hence, -6/3 is not an integer.

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Answer:

Step-by-step explanation:

a^2 + 12^2 = 13^2

a^2 + 144 = 169

a^2 = 25

a = 5