(6, -6) and (8, 8) Y = ?

If the population standard deviation of a sample increases without other changes, the confidence interval is most likely to widen.

This is because the standard deviation is a measure of the spread of the data, so if it increases, the data points are more spread out from the mean. As a result, the range of values that could reasonably contain the true population parameter (i.e., the confidence interval) needs to be wider to account for the increased variability in the sample.
If the population standard deviation of a sample increases without other changes, the confidence interval is most likely to become wider.
When standard deviation increases, it indicates more variability in the data. As a result, the confidence interval, which is a range of values that estimates the true population parameter with a certain level of confidence, needs to be wider to account for the increased variability. This ensures that the true population parameter is still captured within the interval with the same level of confidence.

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The value of m will be; m  = (-∞ , - 15/4) ∪ ( 1 , ∞ ).

A system of equations is two or more equations that can be solved to get a unique solution. the power of the equation must be in one degree.

Given: line y = mx  + 3 intersects the line 3x + 4y + 12 = 0 at two distinct points.

To find the set of values of m.

The system of equations are;

y = mx  + 3

3x + 4y + 12 = 0

The intersection point are (1, −15/4)

So, the value of m will be

m  = (-∞ , - 15/4) ∪ ( 1 , ∞ )

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Answer:

Y-Intercept would be 2, Slope would be 1

Step-by-step explanation:

Answer:

AB and CD.

Step-by-step explanation:

To check if two sides of a quadrilateral are congruent, we need to find the length of each side. We can use the distance formula to calculate the length of each side:

AB = √[(1 - 4)^2 + (4 - 1)^2] = √(9 + 9) = 3√2

BC = √[(5 - 1)^2 + (1 - 4)^2] = √(16 + 9) = √25 = 5

CD = √[(1 - 1)^2 + (-2 - 1)^2] = √9 = 3

AD = √[(-3 - 1)^2 + (1 - (-2))^2] = √(16 + 9) = √25 = 5

Therefore, AB and CD have the same length and are congruent, while BC and AD have the same length and are congruent.

So the correct answer is AB and CD.

The feasible set for this system of constraints is not convex, and the points (5, 5) and (3, 7) violate the convexity definition.

To determine whether the feasible set for each system of constraints is convex, we need to analyze the constraints individually and examine their intersection.

a) (x1)² + (x2)² > 9

This constraint represents points outside the circle with a radius of √9 = 3. The feasible set includes all points outside this circle.

b) x1 + x2 ≤ 10

This constraint represents points that lie on or below the line x1 + x2 = 10. The feasible set includes all points on or below this line.

c) x1, x2 > 0

This constraint represents points in the positive quadrant, where both x1 and x2 are greater than zero.

Now, let's analyze the intersection of these constraints:

Considering the first two constraints (a and b), we can see that the feasible set consists of all points outside the circle (constraint a) and below or on the line x1 + x2 = 10 (constraint b).

To determine whether the feasible set is convex, we need to check if any two points within the set create a line segment that lies entirely within the set.

If we consider the points (5, 5) and (3, 7), both points satisfy the individual constraints (a) and (b). However, the line segment connecting these two points, which is the line segment between (5, 5) and (3, 7), exits the feasible set since it passes through the circle (constraint a) and above the line x1 + x2 = 10 (constraint b).

Therefore, the feasible set for this system of constraints is not convex, and the points (5, 5) and (3, 7) violate the convexity definition.

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Answer:

90 degrees.

Step-by-step explanation:

They right ray point is on the 90 degree number and left ray is on zero so we find the difference.

90-0=90

so it measures 90 degrees.

Answer:

<ba=180 <bc=90

Step-by-step explanation:

Answer:

The slop is - 1/2

Step-by-step explanation:

The slop is what x is multiplied by,

Bonus: What you add is the y interspet , in this case 1/4

Every rectangle with four congruent sides is a square -> True

Every rhombus is a quadrilateral -> True

Every square is a parallelogram -> True

Every quadrilateral is a square -> False.

A square is a regular quadrilateral, which means that it has four equal sides and four equal angles. It can also be defined as a rectangle with two equal-length adjacent sides.

here, we have,

we know that,

Every rectangle with four congruent sides is a square -> True

Every rhombus is a quadrilateral -> True

Every square is a parallelogram -> True

Every quadrilateral is a square -> False.

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The correct answer is d. 10 years.

To find out how many years it will take for Jiefei to double her initial investment, we can use the compound interest formula:
A = P(1 + r/n)^(nt)
Where:
A = final amount
P = initial investment
r = interest rate (in decimal form)
n = number of times interest is compounded per year
t = number of years
In this case, Jiefei's initial investment will double, so the final amount (A) will be 2 times her initial investment (P). The interest rate (r) is given as 7.125%, which is equivalent to 0.07125. Since the interest is compounded annually, n = 1.
So the equation becomes:
2P = P(1 + 0.07125/1)^(1*t)
Simplifying the equation:
2 = (1 + 0.07125)^t
Taking the natural logarithm of both sides:
ln(2) = ln(1 + 0.07125)^t
Using the logarithmic property:
ln(2) = t * ln(1 + 0.07125)
Solving for t:
t = ln(2) / ln(1 + 0.07125)
Using a calculator:
t ≈ 9.95 years
Rounding up to the nearest whole number, it will take approximately 10 years for Jiefei to double her initial investment.

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Based on the given informations, the change in y as t changes from 1 to 6 is approximately 3.870. Therefore the correct option is (A).

To find the change in y as t changes from 1 to 6, we need to integrate the given function with respect to t over the interval [1, 6] and then find the difference between the values of the integral at the two endpoints.

∫₁⁶ 6e\(.^{(-0.08(t-5)^2)}\)  dt

We can use the substitution u = t - 5 to simplify the integral:

∫₋₄¹ 6e\(.^{(-0.08u^2)}\)  du

Unfortunately, there is no closed-form solution for this integral. We can use numerical integration methods, such as Simpson's rule or the trapezoidal rule, to approximate the integral. Using Simpson's rule with a step size of 1, we get:

∫₋₄¹ 6e\(.^{(-0.08u^2)}\) du ≈ 3.870

Therefore, the change in y as t changes from 1 to 6 is approximately 3.870, which corresponds to option (A).

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Using ratio and proportion, of the 243 students in the school altogether, 144 students are expected to participate in school clubs, sports, or activities.

Ratio is the relationship between two quantities, normally expressed as the quotient of one divided by the other. On the other hand, proportion is the equality of two ratios, such that a : b = c : d.

If 32 students participate in school clubs, sports, or activities out of the 54 students, then the ratio between the number of students who participate in school clubs, sports, or activities and the total number of students is:

32 : 54

Using proportion, solve for the number of students who are expected to participate in school clubs, sports, or activities out of 243 students.

32 : 54 = n = 243

where n = number of students who are expected to participate in school clubs, sports, or activities out of 243 students

32 : 54 = n = 243

32(243) = 54n

n = 144

Hence, 144 students are expected to participate in school clubs, sports, or activities out of 243 students.

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There are a total of 3 x 10 x 10 = 300 possible combinations of suits, ties, and shirts that a person can select from. However, when selecting a traveling wardrobe, there are only 10 possible suit combinations, 10x10 = 100 possible tie combinations, and 10x10x10 = 1000 possible shirt combinations. This makes a total of 10 x 100 x 1000 = 100,000 possible selections of two suits, four ties and six shirts.

The sheer number of possible combinations indicates how important it is to choose wisely. The two suits should be complementary and appropriate to the occasion; the four ties can be chosen to match the suits, and the six shirts should be selected to mix and match with the ties and suits. Care should be taken to avoid repeating clothing items, and the person should also consider the climate and purpose of the trip in order to select the most suitable wardrobe.

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Given,

The expression is,

As the line of the equation is shaded has

The shaded part is above the line,

So,

Hence, the inequality is -5x+2y>-4.

Answer:

The correct answer is C hope this helps :)

Step-by-step explanation:

Answer:

x1 = 2, x2 =-8

y1=-2, y2 =-2

y2-y1 = |-2+2| =0

x2-x1= |-8-2|= 10

So distance is 10 units

Step-by-step explanation:

Answer:

y=20x is correct

Step-by-step explanation:

i took the quiz

Answer:

y = 20x

i got the question right on the quiz

Given

Solution

When T=140

Apply exponent rule

The final answer

t =1 7.7552years

The variance of X is 0.09.

Formula used: Variance is the square of the standard deviation. T

he formula to calculate variance of a discrete random variable X is given by:

Var(X) = E[X²] - [E(X)]²Calculation:

P(B) = 0.2P(A)

= 0.5P(AB) =

0.1

By definition,

P(A U B) = P(A) + P(B) - P(AB)

⇒ P(A U B) = 0.5 + 0.2 - 0.1

⇒ P(A U B) = 0.6

Now,E[X] = E[1B + ?]

⇒ E[X] = E[1B] + E[?]

Since 1B can have two values 0 and 1.

So,E[1B] = 1*P(B) + 0*(1 - P(B))

= P(B)

= 0.2P(A/B)

= P(AB)/P(B)

⇒ P(A/B)

= 0.1/0.2

= 0.5

So, the conditional probability distribution of ? given B is:

P(?/B) = {0.5, 0.5}

⇒ E[?] = 0.5(0) + 0.5(1)

= 0.5⇒ E[X]

= 0.2 + 0.5

=0.7

Now,E[X²] = E[(1B + ?)²]

⇒ E[X²] = E[(1B)²] + 2E[1B?] + E[?]²

Now,(1B)² can take only 2 values 0 and 1.

So,E[(1B)²] = 0²P(B) + 1²(1 - P(B))= 0.8

Also,E[1B?] = E[1B]*E[?/B]⇒ E[1B?] = P(B)*E[?/B]= 0.2 * 0.5 = 0.1

Putting the values in the equation:E[X²] = 0.8 + 2(0.1) + (0.5)²= 1.21Finally,Var(X) = E[X²] - [E(X)]²= 1.21 - (0.7)²= 0.09

Therefore, the variance of X is 0.09.

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Answer: FALSE

Step-by-step explanation:

A P E X

Answer:

true

Step-by-step explanation:

The probability that we draw a total of 4 cards is approximately 0.074.

The probability that we draw a total of n cards is a function of n.

the expected number of times we draw a card until we get a heart or a face card is: E(X) = 1/p = 3.25.

To solve this problem, we can use the geometric distribution, which models the number of trials needed to get the first success in a sequence of independent trials.

Since we are drawing a heart or a face card, there are 16 cards (4 face cards and 12 hearts) out of 52 that are successful. Therefore, the probability of success is:

p = 16/52 = 4/13

What is the probability that we draw a total of 4 cards

We want to find the probability that we get the first success on the fourth trial, i.e., we draw three non-successes followed by a success. The probability of this event is:

P(X = 4) = \((1 - p)^3 * p = (9/13)^3 * (4/13) = 0.074\)

We want to find the probability that we get the first success on the nth trial, i.e., we draw n-1 non-successes followed by a success. The probability of this event is:

\(P(X = n) = (1 - p)^(^n^-^1^) * p\)

The expected value of a geometric distribution is 1/p. Therefore, the expected number of times we draw a card until we get a heart or a face card is:

E(X) = 1/p = 13/4

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The coordinates of the top right corner of the screen (1280, 720).

The coordinates usually consist of two or three values, depending on whether you're working with a two-dimensional or three-dimensional system.

To answer your question, we need to know which coordinate system we're using. In this case, we're assuming that we're dealing with a two-dimensional system, which means that we only need to specify two coordinates: the x-coordinate and the y-coordinate.

The top right corner of the screen is located at a specific position that can be determined by measuring the distance from the origin (usually the bottom left corner) to that point. If we assume that the origin is located at (0, 0), then we need to find the x and y values that correspond to the top right corner.

The x-coordinate of the top right corner depends on the width of the screen, which can vary depending on the device you're using. For example, if the width of the screen is 1280 pixels, then the x-coordinate of the top right corner would be 1280.

The y-coordinate of the top right corner also depends on the height of the screen, which again can vary depending on the device. If the height of the screen is 720 pixels, then the y-coordinate of the top right corner would be 720.

Therefore, the resulting coordinates would be (1280, 720).

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Answer:

between 10 and 12

Step-by-step explanation:

Given the measure of angles:

m∠B = 70°

m∠C = 60°

m∠A = 50°

Following this information, since the side lengths are directly proportional to the angle measure they see:

Angle B is the largest angle. Therefore, side AC is the longest side of the triangle since it is opposite of the largest angle.

Angle C is the smallest angle, so the side AB is the shortest side.

Therefore, side BC must be between 10 and 12 inches.

Answer:

  b) x = - 1

Step-by-step explanation:

You want the equation of the axis of symmetry for a parabola with x-intercepts of 5 and -7.

The given x-intercepts are symmetrical about the axis of symmetry, so its x-intercept is the midpoint of the segment between (5, 0) and (-7, 0).

That midpoint is ...

  ((5, 0) +(-7, 0))/2 = (-2, 0)/2 = (-1, 0)

The vertical line through this point has equation ...

  x = -1

Answer:3a ?

Step-by-step explanation:

Answer:

✈️?

Step-by-step explanation:

The percentage of the lawn that John still needs to mow, (x / L) multiplied by 100. The specific value of x and L will depend on the dimensions of the lawn shown in the model.

To determine the percent of the lawn that John still needs to mow, we need to find the ratio of the area of the un-mowed section to the total area of the lawn, and then multiply by 100 to express the result as a percentage.

Let's assume that the lawn is a rectangular shape, and let's label the length of the lawn as L and the width of the lawn as W. If the dark green section represents the part of the lawn that John has already mowed, then the light section represents the part of the lawn that he still needs to mow. Let's label the length of the un-mowed section as x.

The area of the un-mowed section can be found by multiplying the length x by the width W, which gives us xW. The area of the entire lawn is L times W. Therefore, the area of the mowed section is (LW - xW) since the un-mowed section is xW.

To find the percentage of the lawn that John still needs to mow, we can use the following formula:

percentage un-mowed = (area un-mowed / area of entire lawn) x 100

Substituting the expressions we found for the area of the un-mowed section and the area of the entire lawn, we get:

percentage un-mowed = (xW / (LW)) x 100

Simplifying the expression, we get:

percentage un-mowed = (x / L) x 100

Therefore, the percentage of the lawn that John still needs to mow is equal to (x / L) multiplied by 100.

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Answer:

There are 5 numbers between 2 and 12 (inclusive) by which 378 is divisible.

Step-by-step explanation:

We have to find how many numbers between 2 and 12 (inclusive) is the number 378 divisible  by.

Firstly, 378 is divisible by 2 as the last digit of the given number is even.

378 is divisible 3 because the sum of the digits (3 + 7 + 8 = 18) is divisible by 3.

378 is divisible by 6 because any number which is divisible by 2 and 3, will be divisible by 6 also.

378 is divisible by 7 as \(54 \times 7\) = 378.

378 is divisible 9 because the sum of the digits (3 + 7 + 8 = 18) is divisible by 9.

And, the number 378 is not divisible by 4, 5, 8, 10, 11, and 12.

Hence, there are 5 numbers between 2 and 12 (inclusive) by which 378 is divisible.

If the p-value is greater than 0.01, then there is insufficient evidence to reject the null hypothesis and the publisher's claim cannot be substantiated.

The null hypothesis for this scenario would be that the proportion of newsletter readers who own a Rolls Royce is equal to or greater than 58%. The alternative hypothesis would be that the proportion of newsletter readers who own a Rolls Royce is less than 58%. To determine whether there is sufficient evidence to substantiate the publisher's claim, a hypothesis test would need to be conducted using a significance level of 0.01. The test would involve collecting a random sample of newsletter readers and calculating the proportion who own a Rolls Royce. If the p-value (probability value) associated with the test is less than 0.01, then there is sufficient evidence to reject the null hypothesis and conclude that the proportion of newsletter readers who own a Rolls Royce is indeed less than 58%.

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True. The correlation coefficient (r) must also be positive, indicating a strong positive linear relationship between the two variables.

The correlation coefficient (r) measures the strength and direction of the linear relationship between two variables. It ranges from -1 to 1, where a value of -1 indicates a perfectly negative linear relationship, a value of 1 indicates a perfectly positive linear relationship, and a value of 0 indicates no linear relationship.  If the slope (b) of ŷ is positive, it means that as the independent variable increases, the dependent variable also increases.

In addition to the above explanation, it is important to note that while a positive slope (b) of ŷ indicates a positive linear relationship between two variables, it does not necessarily mean that the correlation coefficient (r) will always be positive. For example, if there is a weak positive linear relationship between two variables, the correlation coefficient (r) may still be positive but not as strong as if there was a strong positive linear relationship. Similarly, there may be situations where the correlation coefficient (r) is positive but the slope (b) of ŷ is not positive, such as in a curvilinear relationship where the relationship between the two variables is not linear.

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A system of inequalities to represent the constraints of this problem are x ≥ 0 and y ≥ 0.

A graph of the system of inequalities is shown on the coordinate plane below.

In order to write a system of linear inequalities to describe this situation, we would assign variables to the number of HD Big View television produced in one day and number of Mega Tele box television produced in one day respectively, and then translate the word problem into algebraic equation as follows:

Since the HD Big View television takes 2 person-hours to make and the Mega TeleBox takes 3 person-hours to make, a linear equation to describe this situation is given by:

2x + 3y = 192.

Additionally, TVs4U’s total manufacturing capacity is 72 televisions per day;

x + y = 72

For the constraints, we have the following system of linear inequalities:

x ≥ 0.

y ≥ 0.

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