Nicole, jared, adam, and mary are in a tennis tournament. they all have an equal chance of winning
a) show the possible orders for the first two places in the tournament
b) what is the probability that the two girls will beat the two boys?

The phase portrait of the differential equation 2y^n - y' = 0 will consist of a single equilibrium point at (0, 0) and arrows diverging away from the equilibrium in both positive and negative y directions.

To sketch the phase portrait of the differential equation 2y^n - y' = 0, we need to analyze the equilibriam and the orientations or directions of the arrows.

First, let's find the equilibria by setting y' to zero and solving for y. In this case, we have:

2y^n - y' = 0

2y^n - 0 = 0

2y^n = 0

From this equation, we can see that the only equilibrium occurs when y = 0. Thus, the phase portrait will have a single equilibrium point at (0, 0).

Next, we need to determine the orientations or directions of the arrows around the equilibrium point. To do this, we can choose some test points to the left and right of the equilibrium and evaluate the sign of y' to determine whether the arrows are pointing towards or away from the equilibrium.

Let's consider a test point y = -1, which is to the left of the equilibrium at y = 0. Substituting this value into the differential equation, we have:

2(-1)^n - y' = 0

2(-1)^n = y'

For even values of n, we get:

2 - y' = 0

y' = 2

Since y' is positive (2 > 0), the arrows at y = -1 will be pointing away from the equilibrium.

Now let's consider a test point y = 1, which is to the right of the equilibrium at y = 0. Substituting this value into the differential equation, we have:

2(1)^n - y' = 0

2 - y' = 0

y' = 2

Again, we find that y' is positive (2 > 0), indicating that the arrows at y = 1 will be pointing away from the equilibrium.

Based on this analysis, we can sketch the phase portrait of the differential equation. Since the orientations of the arrows are pointing away from the equilibrium at y = 0 for both positive and negative y values, the phase portrait will show arrows diverging away from the equilibrium in both directions.

The phase portrait will have a single equilibrium point at (0, 0), with arrows diverging away from it in both the positive and negative y directions. It is important to note that the specific shape and scale of the phase portrait will depend on the value of n, which is not specified in the given equation.

In summary, the phase portrait of the differential equation 2y^n - y' = 0 will consist of a single equilibrium point at (0, 0) and arrows diverging away from the equilibrium in both positive and negative y directions.

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Answer:

60% increase

Step-by-step explanation:

Take the new minus the original

48-30 = 18

Divide by the original

18/30

.6

Change to percent form

60% increase

The code efficiently identifies prime numbers using the ancient Greek algorithm. It initializes an array, marks the multiples of each prime number as non-prime, and then prints the prime numbers.

This algorithm demonstrates a straightforward and efficient method for finding prime numbers within a given range.The ancient Greek algorithm for finding prime numbers less than or equal to a given number is implemented in the provided Python code. The algorithm follows a simple approach of marking numbers as prime or non-prime.

It starts by assuming all numbers as prime and then proceeds to mark the multiples of each prime number as non-prime. The code initializes an array where each element represents a number and marks them all as prime initially. Then, it iterates over each number from 2 to the given number, checking if it is marked as prime. If it is, the algorithm crosses out all its multiples as non-prime. Finally, it prints the numbers that remain marked as prime.

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Answer:

B= 67

Step-by-step explanation:

Being vertically opposite angle

Answer:

40

Step-by-step explanation:

basexheight= area

8x10= 80

80/2=40

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Distributive property states that A × (B + C) = AB + AC. are always equal.

According to the statement

we have to explain the distributive property over multiplication.

Distributive property is the multiplication property.

According to this property, it generalizes the Distributive Law and it tells us that the an expression which is given in form of A (B + C) can be solved as A × (B + C) = AB + AC.

It means that From distributive property

A × (B + C) = AB + AC.

These are always equal with each other.

Now we will explain with an example,

Let A = 2, B = 3 and C = 4

Then

2 × (3 + 4) = 2(3) + 2(4).

2 × (7) = 2(3) + 2(4).

14 = 6 + 8.

14 = 14.

It proves that the A × (B + C) = AB + AC.

So, Distributive property states that A × (B + C) = AB + AC. are always equal.

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Answer: It is correct.

The first step here is to distribute the numbers

4 times 2x is 8x

4 times -5 is -20

Therefore, you're left with 8x-20

I hope this helps!

The given pattern is an illustration of a linear equation. The students' equations are:

Given that:

\(n \to\) number of tiles

\(s\to\) step number

See attachment for the pattern, that is being analyzed by the students.

Dan

For each step, the number of tower is the same as the step number.

This means that:

\(n \to s\)

2 arms contain one less block means: 2 x (s - 1) blocks for both arms.

So, Dan's equation is::

\(n = s + 2 \times (s - 1)\)

\(n = s + 2(s - 1)\)

Sally

First, we calculate the slope (m) of the table

\(m = \frac{n_2 - n_1}{s_2 - s_1}\)

So, we have:

\(m = \frac{4-1}{2-1}\)

\(m = \frac{3}{1}\)

\(m =3\)

The equation is then calculated using:

\(n = m(s - s_1) + n_1\)

This gives:

\(n = 3(s - 1) + 1\)

Open bracket

\(n = 3s - 3 +1\)

\(n = 3s - 2\)

Hence;

Dan's equation is: \(n = s + 2(s - 1)\)

Sally's equation is: \(n = 3s - 2\)

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The axis of symmetry is equal to 7.

In Mathematics, the axis of symmetry of a quadratic function can be calculated by using this mathematical equation:

Axis of symmetry, Xmax = -b/2a

Where:

a and b represents the coefficients of the first and second term in the quadratic function.

Next, we would write the quadratic function in standard form with a leading coefficient of 1 by using the given roots or x-intercept as follows;

f(x) = (x - 3)(x - 11)

f(x) = x² - 11x - 3x - 33

f(x) = x² - 14x - 33

Axis of symmetry, Xmax = -b/2a

Axis of symmetry, Xmax = -(-14)/2(1)

Axis of symmetry, Xmax = 14/2

Axis of symmetry, Xmax = 7.

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The height of domino number 10 is 56.9 inches.

A function in mathematics set up a relationship between the dependent variable and independent variable. on changing the value of the independent variable the value of the dependent variable also changes.

The exponential function:-An exponential function is given by:

y = abˣ

where a is the initial value of y at x = 0, y, x are variables and b is the multiplication factor

Let y represent the height of the number x domino

Since the height of the smallest domino no 0 is 3 inches, hence a = 5. b = 100% + 19% = 1.19

y = 10(1.19)ˣ

For x = 10:

y = 10(1.19)¹⁰= 56.9 inches

Therefore the height of domino number 10 is 56.9 inches.

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To answer this question, we need to calculate the area of the given wall first to know the area to be painted, and we have the following information:

• We have that the dimensions of the wall are 13ft by 9ft.

• A can of paint will cover 50ft² (50 square feet).

Then we have:

1. Find the area of the wall:

2. Therefore, we have that a can of paint can cover only 50ft², then it can paint only:

3. Therefore, we can say that the paint can cover about 43% of the wall.

Then we have:

No, one can of paint will not be enough since it can cover, approximately, 43% of the area of the given wall.

Answer:

Heyhey!!! How ya doing?

Step-by-step explanation:

I can feel it on my skin

It's coming down on me

teardrops on my face

Water like misery

Let it wash away my sins

It's coming down on me

Answer:

(-2,-4)

Step-by-step explanation:

The vertex of a parabola is it's lowest (or highest, but lowest in this context) point. Your lowest point is (-2,-4), so that is your answer.

Answer:  \(y=-\dfrac67x-\dfrac{34}{7}\)

Step-by-step explanation:

Slope-intercept form: y=mx+c   (i) , of linear equations,  m= slope and c= y-intercept of the line.

6x+7y=13in slope intercept form would be :

\(7y=13-6x\\\\\Rightarrow\ y=\dfrac{-6}{7}x+\dfrac{13}{7}\)

Comparing to (i) , \(m = \dfrac{-6}{7}\)

Slope of parallel lines are equal.

So, slope of required line = \(m = \dfrac{-6}{7}\)

Equation of line with slope m and passes through point : \((y-b)=m(x-a)\)

So, equation of required line:

\((y-(-4))=\dfrac{-6}{7}(x-(-1))\\\\\Rightarrow\ (y+4)=\dfrac{-6}{7}(x+1)\\\\\Rightarrow\ y+4=\dfrac{-6}{7}x-\dfrac{6}{7}\\\\\Rightarrow\ y=-\dfrac67x-\dfrac{6}{7}-4\\\\\Rightarrow\ y=-\dfrac67x-\dfrac{34}{7}\)

Answer:

27°

Step-by-step explanation:

The sum of the 3 angles in a triangle = 180°

let the third angle be x , then

x + 90° + 63° = 180°

x + 153° = 180° ( subtract 153° from both sides )

x = 27°

Answer:

27 degrees

Step-by-step explanation:

A right angled triangle has 1 angle as 90 degree. And as you know the other angle is 63 degree, and the angle sum property of a triangle is 180 degrees. So-

Let's take 'x' as the other angle.

90 + 63 + x = 180

153 + x = 180

x = 180 - 153 = 27

x = 27 degrees

So, the other angle is 27 degrees.

All the angles of the right-angled triangle are- 90, 63, 27.

The length of the altitude of the equilateral triangle ABC is \(\frac{13\sqrt{3} }{2}\).

Equilateral Triangle is defined as the triangle with all the sides equal and all the angles = 60 deg.

Altitude of a Triangle can be defined as the perpendicular drawn from the vertex of a triangle to the opposite side.

According to the question

In the figure given below

In ΔADC

Since ΔADC is a right angle triangle we can apply Pythagoras Theorem.

Let the sides of the equilateral triangle be "a". and "h" be the altitude.

Since the altitude is of equilateral triangle it divides the base i.e. DC=a/2

\((AC)^{2} =(AD)^{2}+(DC)^{2}\)

\(a^{2} =h^{2}+(\frac{a}{2})^{2}\\ \\ h^{2}=\frac{4a^{2}-a^{2}}{4} \\ \\ h=\sqrt{3} *\frac{1}{2} *a\)

Substituting the value of a=13 we get

Altitude \(h=\frac{13\sqrt{3} }{2}\)

Therefore , The length of the altitude of the equilateral ΔABC is \(\frac{13\sqrt{3} }{2}\).

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Answer:

Area of the rectangle = 95 cm²

Step-by-step explanation:

Perimeter of the rectangle = Sum of the measures of the sides of the rectangle

From the figure attached,

Perimeter of the rectangle = 2[(3x -1) + (2x + 3)]

                                       39 = 2(5x + 2)

                                       39 = 10x + 4

                                      10x = 39 - 4

                                      10x = 35

                                          x = 3.5

Therefore, measure of the given sides will be,

Length = (3x - 1) cm

3x - 1 = (3×3.5) - 1

        = 10.5 - 1

        = 9.5 cm

Width = (2x + 3) cm

2x + 3 = (2×3.5) + 3

          = 7 + 3

          = 10 cm

Area of the rectangle = Length × width

                                   = 9.5 × 10

                                   = 95 cm²

Therefore, area of the rectangle is 95 cm².

a. The estimated slope coefficient of 0.338 indicates that, on average, for every one unit increase in house size (measured in square feet), the price of the house is expected to increase by $338.

b. To find the predicted price for a 2000 square foot house, we substitute the size value into the equation: PRICE = 30.0 + 0.338 * SIZE. Therefore, the predicted price for a 2000 square foot house would be $30,000 + 0.338 * 2000 = $30,676.

c. If we had measured price in dollars instead of thousands of dollars, the estimated coefficient on size would decrease. For example, if the coefficient on size was 0.338 when price was measured in thousands of dollars, it might be 0.000338 when price is measured in dollars. This is because the change in the unit of measurement affects the magnitude of the coefficient.

d. The error term (ε1) in the theoretical model PRICE = β0 + β1 * SIZE + ε1 captures all other factors besides size that affect the price of a house. This can include variables such as location, number of bedrooms, neighborhood, and other amenities.

e. The estimated slope coefficient of 3.62 in the equation SIZE = -190 + 3.62 * PRICE indicates that, on average, for every one unit increase in price (measured in thousands of dollars), the size of the house is expected to increase by 3.62 square feet.

f. No, the above equation does not show that high housing prices cause houses to be large. The equation suggests a positive relationship between price and size, but it does not imply causation. Other factors, such as the availability of larger houses in the market or the preferences of buyers, could also contribute to the observed relationship.

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Answer:

\(12x^3+2x\)

Step-by-step explanation:

The perimeter of a polygon is equal to the sum of its sides.

The sides in the triangle shown have lengths \(2x^3+6x\), \(4x^3-5x\), and \(6x^3+x\) in no specific order.

Since its perimeter is given by the sum of its sides, the perimeter is equal to:

\(2x^3+6x+4x^3-5x+6x^3+x\)

Combine like terms:

\(\boxed{12x^3+2x}\)

By using combination, there are 24 possible ways to place 4 rooks on a 4 x 4 chessboard such that no two rooks can capture each other.

To place 4 rooks on a 4 x 4 chessboard such that no two rooks can capture each other, we can use the process of combination to place one rook in each row and column, so that no two rooks are in the same row or column.

We can start by placing the rook in the first row and first column. There are four options for where to place the rook in the second row, three options for where to place the rook in the third row, and two options for where to place the rook in the fourth row.

Therefore, there are 4 x 3 x 2 x 1 = 24 ways to place 4 rooks on a 4 x 4 chessboard such that no one rook can capture another rook.

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Answer:

12

Step-by-step explanation:

P = (x% * y)

P = (5% * 240)

p = 5/100 = 0.05

P = (0.05 * 240)

P = 12

Answer:

12%

Step-by-step explanation:

5 percent *240

= (5/100)*240

= (5*240)/100

= 1200/100 = 12

Answer:

16

Step-by-step explanation:

16 x 5 = 80

Answer:

0.75 Cups

Step-by-step explanation:

I've found this method useful whenever I need to divide a mixed number. Instead of dividing 1.5 in half, we can just divide 1 and 0.5 in half and then add up our answers.

\(1.5 \div 2 = (1 \div 2) + (0.5 \div 2) \\ 1.5 \div 2 = 0.5 + 0.25 \\ 1.5 \div 2 = 0.75\)

Answer:

13y

​2

​​ −14y+3

Step-by-step explanation:

Remove parentheses.

6{y}^{2}-9y+4+7{y}^{2}-5y-16y

​2

​​ −9y+4+7y

​2

​​ −5y−1

2 Collect like terms.

(6{y}^{2}+7{y}^{2})+(-9y-5y)+(4-1)(6y

​2

​​ +7y

​2

​​ )+(−9y−5y)+(4−1)

3 Simplify.

13{y}^{2}-14y+313y

​2

​​ −14y+3

using the fifth partial sum of the exponential series, the approximation for e^(-2.5) is approximately 1.649 (rounded to three decimal places).

To approximate the value of e^(-2.5) using the fifth partial sum of the exponential series, we can use the formula:

e^x = 1 + x + (x^2 / 2!) + (x^3 / 3!) + (x^4 / 4!) + ... + (x^n / n!)

In this case, we have x = -2.5. Let's calculate the fifth partial sum:

e^(-2.5) ≈ 1 + (-2.5) + (-2.5^2 / 2!) + (-2.5^3 / 3!) + (-2.5^4 / 4!)

Using a calculator or performing the calculations step by step:

e^(-2.5) ≈ 1 + (-2.5) + (6.25 / 2) + (-15.625 / 6) + (39.0625 / 24)

e^(-2.5) ≈ 1 - 2.5 + 3.125 - 2.60417 + 1.6276

e^(-2.5) ≈ 1.64893

Therefore, using the fifth partial sum of the exponential series, the approximation for e^(-2.5) is approximately 1.649 (rounded to three decimal places).

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The person should pay $7,671.27 to pay off the remaining amount of the loan.

To calculate the remaining amount of the loan after the person has made three payments, we first need to find the equal payment amount.

The loan amount is $15,000, and it is to be paid off in equal payments over a 10-year period. Since the interest rate is 10% compounded annually, we can use the formula for the present value of an ordinary annuity to find the equal payment amount.

The formula for the present value of an ordinary annuity is:

PV = P * [(1 - (1 + r)^(-n)) / r]

Where PV is the present value (loan amount), P is the equal payment amount, r is the interest rate per period, and n is the number of periods.

Let's plug in the given values:

PV = $15,000

r = 10% = 0.1

n = 10 years

We want to find the equal payment amount (P).

$15,000 = P * [(1 - (1 + 0.1)^(-10)) / 0.1]

Simplifying the equation:

$15,000 = P * [(1 - 1.1^(-10)) / 0.1]

$15,000 = P * [(1 - 0.386) / 0.1]

$15,000 = P * [0.614 / 0.1]

$15,000 = P * 6.14

Dividing both sides of the equation by 6.14:

P = $15,000 / 6.14

P ≈ $2,442.91

So, the equal payment amount is approximately $2,442.91.

Since the person has made three payments, we can subtract three times the equal payment amount from the original loan amount to find the remaining balance:

Remaining balance = $15,000 - (3 * $2,442.91)

Remaining balance = $15,000 - $7,328.73

Remaining balance ≈ $7,671.27

Therefore, the person should pay approximately $7,671.27 to pay off the remaining amount of the loan after making the third payment.

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The probability at least 7 of the puppies will be male is approximately 0.0805 or 8.05%.

To determine the probability that at least 7 of the puppies will be male, we will have to use the binomial probability formula.

P(X ≥ k) = 1 - P(X < k)

where X is the number of male puppies, P is the probability of a puppy being male and k is the minimum number of male puppies required.

We can solve this problem by finding the probability that 0, 1, 2, 3, 4, 5, or 6 of the puppies are male, and then subtracting that probability from 1. We use the binomial distribution formula to find each of these individual probabilities.

P(X=k) = nCk * pk * (1-p)n-k

where n is the total number of puppies, p is the probability of a puppy being male (0.5), k is the number of male puppies, and nCk is the number of ways to choose k puppies out of n puppies. We'll use a calculator to compute each probability:

P(X < 7) = P(X=0) + P(X=1) + P(X=2) + P(X=3) + P(X=4) + P(X=5) + P(X=6)

P(X = 0) = 11C0 * 0.5⁰ * (1-0.5)¹¹ = 0.00048828125

P(X = 1) = 11C1 * 0.5¹ * (1-0.5)¹⁰ = 0.00537109375

P(X = 2) = 11C2 * 0.5² * (1-0.5)⁹ = 0.03295898438

P(X = 3) = 11C3 * 0.5³ * (1-0.5)⁸ = 0.1171875

P(X = 4) = 11C4 * 0.5⁴ * (1-0.5)⁷ = 0.24609375

P(X = 5) = 11C5 * 0.5⁵ * (1-0.5)⁶ = 0.35595703125

P(X = 6) = 11C6 * 0.5⁶ * (1-0.5)⁵ = 0.32421875

P(X < 7) = 0.00048828125 + 0.00537109375 + 0.03295898438 + 0.1171875 + 0.24609375 + 0.35595703125 + 0.32421875 = 1 - P(X < 7) = 1 - 1.08184814453 = -0.08184814453 ≈ 0.0805

Therefore, the probability that at least 7 of the puppies will be male is approximately 0.0805 or 8.05%.

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The equation of the tangent line to the graph of y = arcsec(18x) at the point (2, 18) is y = (√3 / 6)x + (18 - √3 / 3).

To find the equation of the tangent line to the graph of the function y = arcsec(18x) at the point (2, 18), we need to determine the slope of the tangent line at that point.

The derivative of the arcsec(x) function is given by:

d/dx [arcsec(x)] = 1 / (|x| * sqrt(x^2 - 1))

Using this derivative, we can find the slope of the tangent line at x = 2:

m = 1 / (|2| * sqrt(2^2 - 1))

= 1 / (2 * sqrt(3))

= 1 / (2 * √3)

= √3 / 6

Now that we have the slope (m) and the point (2, 18), we can use the point-slope form of a linear equation to find the equation of the tangent line:

y - y₁ = m(x - x₁)

where (x₁, y₁) is the given point (2, 18) and m is the slope (√3 / 6).

Plugging in the values:

y - 18 = (√3 / 6)(x - 2)

Simplifying further:

y - 18 = (√3 / 6)x - (√3 / 6)(2)

y - 18 = (√3 / 6)x - √3 / 3

Finally, rearranging the equation to the standard form:

y = (√3 / 6)x + (18 - √3 / 3)

So, the equation of the tangent line to the graph of y = arcsec(18x) at the point (2, 18) is y = (√3 / 6)x + (18 - √3 / 3).

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A normally distributed reading test used across the country has a population mean of 100 and a population standard deviation of 30. 0.76753 is the proportion of reading test scores between z.

If we saw on Z-score table the value of z= -1.1 on 0.00 significant level is, = 0.13567

and for z-score table the value of z = 1.3 on 0.00 significant level is, = 0.90320

To find out the proportion we have,

=Upper bound - lower bound

=0.90320 - 0.13567

= 0.76753.

Standard deviation (or σ) is a measure of how far the data are from the mean. A low standard deviation means that the data are clustered around the mean, and a high standard deviation means that the data are more scattered.

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