Can you please help me on those 2

Answer:

Slope = -2.5

Step-by-step explanation:

use the formula:

y2-y1/x2-x1

Answer:

below

Step-by-step explanation:

A triangle can only be a triangle if the two shortest sides add up to be greater than the longest side.

For example on the first one, the segments 1 2 and 3 will not make a triangle as 1 + 2 = 3 and if the two smallest sides of a triangle are equal to the longest side it will not be a triangle at all.

So to make this easy, out of the three numbers given: add the two smallest numbers. This number has to be greater than the third number given, and it cannot be equal.

For question three: 3+9 = 12

And 12 is greater than 11, therefore this can make a triangle.

Using hypothesis test we obtain that that the soft drink market share of Coca-Cola at the school is different from 47%.

To determine whether the soft drink market share of Coca-Cola at the school is different from 47%, we can conduct a hypothesis test using the data provided.

Let's set up the null and alternative hypotheses:

Null Hypothesis (H0): The soft drink market share of Coca-Cola at the school is 47%.

Alternative Hypothesis (H1): The soft drink market share of Coca-Cola at the school is different from 47%.

To perform the hypothesis test, we can use the chi-square goodness-of-fit test, which compares the observed frequencies with the expected frequencies under the assumption of the null hypothesis.

First, let's calculate the expected frequencies under the assumption that Coca-Cola's market share is 47%:

Expected frequency of Coca-Cola = (47% of 216) = 0.47 * 216 = 101.52

Expected frequency of other soft drinks = 216 - 101.52 = 114.48

Now, we can set up a chi-square test statistic:

χ^2 = Σ [(Observed frequency - Expected frequency)^2 / Expected frequency]

χ^2 = [(81 - 101.52)^2 / 101.52] + [(216 - 114.48)^2 / 114.48]

χ^2 = 7.96

Next, we need to determine the critical value for the chi-square test at a specified level of significance (e.g., α = 0.05).

The degrees of freedom for this test would be (number of categories - 1) = 1.

Looking up the critical value in a chi-square distribution table or using a statistical software, the critical value for α = 0.05 and 1 degree of freedom is approximately 3.841.

Since our test statistic (χ^2 = 7.96) is greater than the critical value (3.841), we can reject the null hypothesis.

Therefore, based on the given data, we have evidence to suggest that the soft drink market share of Coca-Cola at the school is different from 47%.

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\(L(x,y)=f(a,b)+f_x'(a,b)(x-a)+f_y'(a,b)(y-b)\\\\f(x,y)=x+yx\\(a,b)=(1,6)\\\\f(1,6)=1+6\cdot1=7\\f'_x(x,y)=1+y\\f'_x(1,6)=1+6=7\\f'_y(x,y)=x\\f'_y(1,6)=1\\\\L(1,6)=7+7\cdot(x-1)+1\cdot(y-6)\\L(1,6)=7+7x-7+y-6\\L(1,6)=7x+y-6\)

Answer:

It is lie

Step-by-step explanation:

Fdfdddddhfhdhdhdhdhhdhdhdhd

Answer:

Between 3 and 4.

Step-by-step explanation:

Due to the square root of 10 being around 3.16, the value is between 3 and 4.

However, we can also find this by saying the closest two integers to the square root of 10 are 3 and 4 due to 3^3 = 9 and 4^2 = 16 and 10 being between those two values.

Hope this helped!

Answer:

There will be 180 mp3s defective

Step-by-step explanation:

Since out of 50, there are 4 defective, so you have to do 2,250 divided by 50, which is 45. Then multiply 45 by 4 to get 180

Answer:

3

Step-by-step explanation:

The interquartile range is where the 2nd and 5th dots are, on the opposite ends of the square, from 15-18.

Answer:

3

Step-by-step explanation:

The interquartile range (IQR) is the difference between the upper quartile (Q₃) and the lower quartile (Q₁).

In a box plot:

From inspection of the given box plot:

Therefore:

IQR = Q₃ - Q₁

      = 18 - 15

      = 3

So the interquartile range of the given box plot is 3.

Based on the regression equation, we can predict the value of the dependent variable given a value of the independent variable.

The equation includes variables that represent the relationship between the dependent and independent variables, allowing us to estimate the dependent variable's value when provided with the independent variable's value. An equation is a mathematical expression that uses symbols and operations to represent a relationship between two or more variables.

Variables are factors that can change and affect the outcome of the equation. In a regression equation, one variable is considered the dependent variable, meaning that its value depends on the value of another variable, called the independent variable.

Regression analysis is a statistical method used to model the relationship between the dependent variable and one or more independent variables. The regression equation is the mathematical formula that represents this relationship. By inputting a specific value for the independent variable into the equation, we can predict the corresponding value of the dependent variable.

It is important to note that the regression equation only predicts the value of the dependent variable based on the values of the independent variable.

It does not necessarily imply causation between the two variables, nor does it measure the association between two variables directly. However, it can be a useful tool for analyzing data and making predictions based on that data.

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To determine the values of θ on the polar curve r = θ where the tangent lines are horizontal or vertical, we need to consider the slope of the tangent lines.

The slope of a tangent line to a polar curve is given by the derivative of r with respect to θ, which can be calculated using the chain rule:

dr/dθ = d(θ)/dθ

In this case, dr/dθ = 1 because the derivative of θ with respect to θ is 1.

Now, let's analyze the slope for horizontal and vertical tangent lines:

Horizontal tangent line: The slope of a horizontal line is 0. Therefore, we need to find the values of θ where dr/dθ = 0.

Since dr/dθ = 1 for the given polar curve r = θ, there are no values of θ for which the tangent lines are horizontal.

Vertical tangent line: The slope of a vertical line is undefined (or infinite). Therefore, we need to find the values of θ where the derivative dr/dθ is undefined.

Since dr/dθ = 1 for the given polar curve r = θ, there are no values of θ for which the tangent lines are vertical.

In summary, there are no values of θ on the polar curve r = θ where the tangent lines are horizontal or vertical.

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The equation of an exponential function is y = a(b^x)

An exponential function is a mathematical function that has a constant base raised to a variable exponent.  Exponential functions are used to model processes that exhibit exponential growth or decay, such as population growth, radioactive decay, or the spread of infectious diseases.

The general form of an exponential function is:

f(x) = ab^x

where a is the initial value, b is the base, and x is the variable exponent. If the base is greater than 1, the function will exhibit exponential growth, while if the base is between 0 and 1, the function will exhibit exponential decay.

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Answer:

-infinity < x < +infinity

Step-by-step explanation:

the domain of a cube root function is the set of all real numbers. unlike a square root function which is limited to non-negative numbers, a cube root can use all real numbers because it is possible for three negatives to equal a negative.

Answer:

A

Step-by-step explanation:

Edge 2021

4 ways to draw edges between 4 vertices and 14 ways to draw edges between 5 vertices so that the result is a connected graph.

To determine the number of ways to draw edges between 4 vertices so that the result is a connected graph, we need to consider the different cases:

Case 1: A tree with 3 edges.
There are 3 ways to do this, as there are 3 possible trees for a 4-vertex graph: a chain of 4 vertices, a star with a central vertex connected to the other 3 vertices, and a 3-vertex chain with the 4th vertex connected to the 2nd vertex in the chain.

Case 2: A graph with 4 edges.
There is only 1 way to do this, by creating a cycle of 4 vertices and adding an extra edge between any two vertices.

In total, there are 3 + 1 = 4 ways to draw edges between 4 vertices so that the result is a connected graph.

To determine the number of ways to draw edges between 5 vertices so that the result is a connected graph, we need to consider the different cases:

Case 1: A tree with 4 edges.
There are 5 ways to do this, as there are 5 different tree structures for a 5-vertex graph.

Case 2: A graph with 5 edges.
There are 5 ways to do this, by adding an extra edge to each of the 5 tree structures mentioned in case 1.

Case 3: A graph with 6 edges.
There are 3 ways to do this, by adding two extra edges to 3 of the 5 tree structures in case 1.

Case 4: A graph with 7 edges.

There is only 1 way to do this, by connecting all 5 vertices to form a complete graph.

In total, there are 5 + 5 + 3 + 1 = 14 ways to draw edges between 5 vertices so that the result is a connected graph.

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Answer:

x=24/13

Step-by-step explanation:

Answer:

1.8

Step-by-step explanation:

times both sides by 8

x = 24/13

24/13 = 1.8

Answer:

1:2

becuase it can be honestly

Answer:

20

Step-by-step explanation:

P, perimeter of triangle = a + b + c

We're given P = 140 and it is an isosceles triangle.

We can change P to be 2a + b since 2 sides are equal in an isosceles

So, 140 = 2a + b

One side is 3x longer than the other. The equal sides in the triangle can not be 3x longer than each other since it is equal.

And the isosceles sides are longer than the 1 base side.

So if a = our isosceles sides, and b is our base side, than a is 3x our base side which can be written as a = 3b

Now, 140 = 2(3b) + b, and we can now solve

140 = 6b + b => 140 = 7b

20 = b

Our base length is 20.

Answer:

Step-by-step explanation:

Find the slope of the original line and use the point-slope formula

y−y1=m(x−x1)  to find the line parallel to 4x−5y=5

y=\(\frac{4}{5}\)x+6

The equation of the line that passes through the point (-5, 2) and is parallel to the line 4x - 5y = 5 is y = (4/5)x + 6.

We can use the point-slope form to find the equation of a line that is parallel to the line 4x - 5y = 5 and passes through the point (-5, 2),

First, we have to find the slope of the given line by using the slope-intercept form

The equation for the slope-intercept form is y = mx + b where m is slope

Convert the given linear equation into slope-intercept form

4x - 5y = 5

-5y = -4x + 5

y = (4/5)x - 1

By comparing the y = mx + b and the above equation we can evaluate that slope m=4/5.

Now substitute the values in the point-slope form we have coordinates (-5, 2) and slope 4/5.

y - y1 = m(x - x1)

y - 2 = (4/5)(x - (-5))

Simplifying further:

y - 2 = (4/5)(x + 5)

y - 2 = (4/5)x + 4

y = (4/5)x + 6

Therefore, the equation of the line that passes through the point (-5, 2) and is parallel to the line 4x - 5y = 5 is y = (4/5)x + 6.

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Answer:

Theoretical probability is what is expected and experimental probability is the answer.

Step-by-step explanation:

Theoretical probability is what you expected the answer to be. In reality the experimental probability is the actual answer.

Answer:

(300 + 30x)0.145 = y

Step-by-step explanation:

Answer:

-0.145x + 300w + 30y = p

Step-by-step explanation:

Salary: 300 Weekly

+ 30$ every sale

-14.5%

x = her taxes

y = comission

w = number of weeks

P = how much she gets paid.

Ace

Answer:

(0,2)

Step-by-step explanation:

M= the y intersect

Y= 2 units up

(X,Y)

The probability that all four piles have exactly one Ace is 1 / (13 * 17 * 50 * 49), which is approximately 0.00014424.

To find the probability that all four piles have exactly one Ace, we can consider the number of ways to distribute the Aces and the total number of possible distributions.

There are 4 Aces in the deck, and each pile should receive exactly one Ace. The first Ace can be placed in any of the 52 cards, the second Ace in any of the remaining 51 cards, the third Ace in any of the remaining 50 cards, and the fourth Ace in any of the remaining 49 cards.

So, the total number of possible distributions is 52 * 51 * 50 * 49.

To calculate the probability, we need to divide the number of favorable outcomes (where all piles have exactly one Ace) by the total number of possible distributions.

Since each Ace can be distributed to any of the 4 piles, the number of favorable outcomes is 4 * 3 * 2 * 1.

Therefore, the probability is (4 * 3 * 2 * 1) / (52 * 51 * 50 * 49), which simplifies to 1 / (13 * 17 * 50 * 49).

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The probability that a visitor did not make a purchase and did not visit MSN (visited Yahoo) is 43.75%. The probability the visitor visited Yahoo if the visitor did not make a purchase is 0.4. The probability that a visitor makes a purchase or visits MSN is 48%.

Given Information: Number of visitors = 120

Probability of making a purchase = 0.25

Probability of visiting Yahoo = 0.4

Probability of visiting MSN = 0.3

Formula: Probability of an event = Number of ways that event can occur / Total number of possible outcomes

Answer 1: To find the probability that a visitor did not make a purchase and did not visit MSN (visited Yahoo),

First, we need to find the probability of not making a purchase and not visiting MSN.

P(not purchase and not MSN) = 1 - P(purchase or MSN) [Using De Morgan's law]

P(purchase or MSN) = P(purchase) + P(MSN) - P(purchase and MSN) [Using the Addition Rule]

P(purchase or MSN) = 0.25 + 0.3 - (0.25 * 0.3) = 0.475

P(not purchase and not MSN) = 1 - 0.475 = 0.525

Now, we can use the formula to find the probability.

Probability of a visitor did not make a purchase and did not visit MSN (visited Yahoo) = 0.525/120 = 0.004375 ≈ 0.4375 ≈ 43.75%

Answer 2: If the visitor did not make a purchase, the probability the visitor visited Yahoo,

P(Yahoo | Not purchase) = P(Yahoo and Not purchase) / P(Not purchase) = (0.4*0.75)/0.75 = 0.4

Now, we can use the formula to find the probability.

P(Yahoo | Not purchase) = 0.4

Answer 3: To find the probability that a visitor makes a purchase or visits MSN,

P(purchase or MSN) = P(purchase) + P(MSN) - P(purchase and MSN) [Using the Addition Rule]

P(purchase or MSN) = 0.25 + 0.3 - (0.25 * 0.3) = 0.475

Now, we can use the formula to find the probability.

P(purchase or MSN) = 0.475 ≈ 0.48 ≈ 48%

Therefore, The probability that a visitor did not make a purchase and did not visit MSN (visited Yahoo) is 43.75%. The probability the visitor visited Yahoo if the visitor did not make a purchase is 0.4. The probability that a visitor makes a purchase or visits MSN is 48%.

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Answer:

5 feet.

Step-by-step explanation:

if we see that 3 feet is the model and 15 feet is the actual, we find the ratio is 3:15 or 1:5. since the width is 1 foot, then we see the actual is 5 feet long.

Answer:

Step-by-step explanation:

a2 = -2

a + d  =  -2

a + 6d = 7

-5d  =  -9

d  =  9/5

a = -19/5

an  =  a + ( n-1 ) d

an =  -19/5 + ( n-1 ) 9/5

==========================================================

Explanation:

HL stands for Hypotenuse Leg. This rule works only for right triangles.

So we must have two hypotenuses that are congruent, and we must have two legs that are congruent

The diagram shows that AB = DE are the congruent hypotenuses. So we have "H" taken care of. We just need the "L" portion.

We can see that only choice D works, which is AC = EC. If we knew that AC and EC were the congruent legs, then we have enough info to use HL.

Answer:

X=2

Step-by-step explanation:

Because it that is the answer

52 tiles are there in the 25th figure in this pattern.

A pattern is described as a series of recurring symbols, figures, or numbers. Any form of event or object can be related to a pattern.

A pattern has a rule that specifies which items fall within the pattern's umbrella and which do not.

A pattern in mathematics is a recurring arrangement of numbers, forms, colors, and other elements.

Any kind of event or object can be connected to the Pattern.

A pattern is referred to as a rule or a way in which a group of numbers is related to one another.

Sometimes a pattern is also referred to as a sequence.

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Answer:

c

Step-by-step explanation:

The measures of angles of the kite are ∠JHL = 91°

Given data ,

Let the kite be represented as KLHJ

where the measure of angle ∠HLK = 128°

And , the measure of ∠JKL = 50°

Now , kites must have two sets of equivalent adjacent sides & one set of congruent opposite angles

So , the angles are

128° + 50° + 2x = 360°

On simplifying , we get

2x = 360° - 178°

2x = 182°

Divide by 2 on both sides , we get

x = 91°

Hence , the angle of kite is 91°

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Answer:

6

Step-by-step explanation:

Following PEMDAS ( parentheses, exponents, multiplication, division, addition, subtraction)

| 7 - 9 | + ( 7 - 9 ) ^ 2

| 7 - 9 | + -2 ^ 2

| 7 - 9 | + ( -2 x -2 )

| 7 - 9 | + 4

| -2 | + 4

2 + 4

6