(L8) Apply the 30º-60º-90º Triangle Theorem to find the length of the hypotenuse of a triangle if the length of the shorter leg is 4 inches.

The option b "The area under the curve is 1." and the option d "It is symmetrical" are true about the probability function for a t distribution.

When the sample size is small and the population standard deviation is unknown, the t-distribution is used in statistics.

Option b confirms that the total area under the t-distribution curve is 1, indicating that the sum of probabilities for all possible outcomes is also equal to 1.

Option d confirms the symmetry of the t-distribution, implying that the curve is balanced on both sides of the mean. The mean, median, and mode of a symmetrical distribution are all equal.

To summarize, the t-distribution is a useful tool in statistics when working with small sample sizes because it accounts for the uncertainty in the population standard deviation.

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Answer:

scale factor = 3

Step-by-step explanation:

since the origin is the centre of dilatation then the scale factor is the ratio of corresponding coordinates, image to original.

given D (12, - 4 ) and D' (36, - 12 ) , then

scale factor = \(\frac{36}{12}\) = \(\frac{-12}{-4}\) = 3

Answer:

S

Step-by-step explanation:

The given statements describe various challenges and themes related to governance, democracy, and social justice.

They encompass debates over governmental authority, the alignment of democratic ideals with social realities, resistance to democratic initiatives, and activism addressing issues of identity and social justice. The authority of different branches of government is often a subject of debate in democratic societies. This includes discussions and disputes over the separation of powers, checks and balances, and the appropriate distribution of authority among the executive, legislative, and judicial branches.

Matching democratic ideals to social realities involves grappling with the implementation and realization of democratic principles in a diverse and complex society. It entails addressing issues such as inequality, discrimination, and social disparities that may hinder the full realization of democratic values and goals.

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The solution to the given problem is given by

(a) x = 202.2921 USD

(b) y = 95.8132 USD

To solve for the values of x and y in the given arbitrage strategy, let's analyze each step:

1. Borrow x USD at 1.91% today, with a total loan repayment obligation after one year of (1+1.91%)x USD.

2. Convert y USD into CAD at the spot rate of 1.49. This gives us an amount of y * 1.49 CAD.

3. Lock in the 3.79% rate on the deposit amount of 1.49y CAD. After one year, the deposit will grow to \((1+3.79\%) * (1.49y) CAD.\)

4. Simultaneously, enter into a forward contract that converts the full maturity amount of the deposit into USD at the one-year forward rate of USD = 1.41 CAD.

The strategy generates 100 USD today and nothing otherwise. We can set up an equation based on the arbitrage condition:

\((1+1.91\%)x - (1+3.79\%) * (1.49y) * (1/1.41) = 100\ USD\)

Simplifying the equation, we have:

\((1.0191)x - 1.0379 * (1.49y) * (1/1.41) = 100\)

Now we can solve for x and y by rearranging the equation:

\(x = (100 + 1.0379 * (1.49y) * (1/1.41)) / 1.0191\)

Simplifying further:

\(x = 99.0326 + 1.0379 * (1.0574y)\)

From the equation, we can see that x is dependent on y. Therefore, we cannot determine the exact value of x without knowing the value of y.

To find the value of y, we need to set up another equation. The total amount in CAD after one year is given by:

\((1+3.79\%) * (1.49y) CAD\)

Setting this equal to 100 USD (the initial investment):

\((1+3.79\%) * (1.49y) * (1/1.41) = 100\)

Simplifying:

\((1.0379) * (1.49y) * (1/1.41) = 100\)

Solving for y:

\(y = 100 * (1.41/1.49) / (1.0379 * 1.49)\\\\y = 100 * 1.41 / (1.0379 * 1.49)\)

\(y = 95.8132\ USD\)

Therefore, the values are:

(a) \(x = 99.0326 + 1.0379 * (1.0574 * 95.8132) ≈ 99.0326 + 103.2595 ≈ 202.2921\ USD\)

(b) \(y = 95.8132\ USD\)

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Answer:

Step-by-step explanation:

The equation of a line is in the form  y=mx+b, where m is slope and b is y-intercept.

The slope is already given.

y = 6x + b

Plug in the values of the coordinate point into the equation to find b.

-3 = 6(-1) + b

-3 = -6 + b

3 = b

The equation of the line is

y = 6x + 3

Answer:

y=6x-3

Step-by-step explanation:

The probability that the student earned a "C" grade who was a Fresh man is 0.32/a. The probability that the student was a Fresh man who earned a "C" grade in STA 2023 is 1.28.

The probability that the student earned a "C" grade who was a Fresh man and the probability that the student was a Fresh man who earned a "C" grade in STA 2023 are to be determined based on the given information.

Let us consider the events: C : Student was a Fresh man F : Student earned a "C" grade P(F) = 0.25 (Probability that a student earned a "C" grade)P(FIC) = 0.32 (Probability that a student who was a Freshman earned a "C" grade)P(C) = a (Probability that a student earned a "C" grade)

We need to determine the following probabilities .P(F|C)P(C|F)We know the following from the conditional probability formula. P(FIC) = P(F and C) = P(F|C) P(C)Substitute the given probabilities. P(F|C)P(C) = P(F and C) = P(FIC) = 0.32P(C) = aP(F|C) = 0.32/a ------ (1)P(FIC) = P(F and C) = P(C|F) P(F)Substitute the given probabilities. P(C|F)P(F) = P(F and C) = P(FIC) = 0.32P(C|F) = 0.32/0.25 = 1.28Using Bayes' theorem, P(F|C) = [P(C|F)P(F)]/P(C)

Substitute the values of P(F|C), P(C|F), P(F), and P(C) in the above equation. P(F|C) = [1.28 × 0.25]/a = 0.32/aThe probability that the student earned a "C" grade who was a Fresh man is 0.32/a.

 the probability that the student was a Fresh man who earned a "C" grade in STA 2023 is 1.28.

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Answer:

tommy is 6ft and makes a 4ft tall shadow

which means that the building would make a shorter shadow then its height.

48/4=12

12*6=72

72ft

Answer:

The measure of arc DC is 50°. Circle O is shown. Line segments A C and E B are diameters. Line segment O D is a radii. Point D is between points E and C. Angle B O D is 90 degrees. What is the measure of Arc E B C? 40° 90° 140° 220°

Step-by-step explanation:

The greatest of the 4 consecutive integers with a sum of -278 is -68

Let n, n + 1, n + 2 and n + 3 be four consecutive integers.

The sum of four consecutive integers is -278.

⇒ n + (n + 1) + (n + 2) + (n + 3) = -278

⇒ n + n + n + n + 1 + 2 + 3 = -278

⇒ 4n + 6 = -278

⇒ 4n = -278 - 6

⇒ 4n = -284

⇒ n = -284/4

⇒ n = -71

So, the consecutive integers would would be:

n = -71

n + 1 = -70

n + 2 = -69

n + 3 = -68

here, the greatest of the 4 integers is -68

Therefore, the greatest of the 4 consecutive integers with a sum of -278 is -68

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Answer:

Mean(m) = 462,536

sd = 29,268.29

Step-by-step explanation:

Given the following:

P(sales > 470,000) = 40% = 0.4

P(sales > 500,000) = 10% = 0.1

Using the z - table, we can locate the corresponding P values

Z = 1 - p = 1 - 0.4 = 0.6; 1 - 0.1 = 0.9

Locating the closest value to 0.6 on the z table ;

(0.25 + 0.26) / 2 = 0.255

Locating the closest value to 0.9 on the z table ;

Z = 1.28

Recall;

z =( x - m) / sd

Where m = mean ; sd = standard deviation

First condition:

0.255 = (470,000 - m) / sd

0.255 × sd = (470,000 - m) - - - - - (1)

1.28 = (500,000 - m) / sd

1.28 × sd = (500,000 - m) - - - - (2)

We can solve for one of the unknowns y subtracting equation (1) FROM 2

1.28sd - 0.255sd = (500,000 - m) - (470000 - m)

1.025sd =500,000 - m - 470000 + m

1.025sd = 30,000

sd = 29,268.29

Substituting the value od SD into (1) or (2)

1.28 × 29,268.29 = 500000 - m

37463.41 = 50000 - m

m = 50000 - 37463.41

Mean(m) = 462,536

Answer:

parallel

Step-by-step explanation:

Parallel lines have equal slopes.

Calculate the slopes m using the slope formula

m = \(\frac{y_{2}-y_{1} }{x_{2}-x_{1} }\)

with (x₁, y₁ ) = (- 1, 2) and (x₂, y₂ ) = (2, 3)

m = \(\frac{3-2}{2+1}\) = \(\frac{1}{3}\)

Repeat with (x₁, y₁ ) = (0, 0) and (x₂, y₂ ) = (3, 1)

m = \(\frac{1-0}{3-0}\) = \(\frac{1}{3}\)

Since slopes are equal then parallel

The probability that the equipment will operate for at least 200 hours without failure is \((1-e^{-2} )^2[2e^-2+1]\).

Given:

mean = 1/100

Let X = the number of components that fail before 200 hours . The X has a binomial distribution n = 3 and p = 1 – e^-2.

probability p = 3/2\(p^{2} (1-p)\) + 3/3 \(p^{3}\).

= 3(\(1-e^-2)^2\)\(e^-2\) + (\(1-e^-2)^3\)

= \((1-e^-^2)^2[3e^-^2 - e^-^2+1]\)

= \((1-e^{-2} )^2[2e^-2+1]\)

Therefore the probability that the equipment will operate for at least 200 hours without failure is \((1-e^{-2} )^2[2e^-2+1]\).

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The standards that use 2.4 GHz are:

A wifi standard defines two characteristics of the wi-fi network, which are speed and frequency.

Such that there are two common frequencies, 2.4 GHz (usually with larger speed) and 5 GHz (usually with lower speed)

The standards that use 2.4 GHz are:

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The solution to the system of linear equations are (-5, 1)

The graph of a system of linear equations is a visual representation of the solution set of the system, where the solution set is the set of all points that satisfy all the equations in the system. A linear equation is a first degree equation in two or more variables, and a system of linear equations is a collection of two or more linear equations.

In two-dimensional space, a linear equation is represented as a straight line. The graph of a system of linear equations in two variables is obtained by plotting the lines representing each equation in the system on the same set of axes. The point or points of intersection of the lines are the solution set of the system and represent the values of the variables that satisfy all the equations in the system.

In the given problem, we have two equations which are;

y = 2/5x + 3 ...eq(i)

y = -x - 4 ...eq(ii)

Plotting this on a graphing calculator, we would get the solutions at point

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Answer:

Step-by-step explanation:

AD // BC  and AB is transversal

x = 36   {alternate interior angles are equal}

ΔABC is a isosceles triangle.

i + i + 36 = 180   {angle sum property of triangle}

2i + 36 = 180

2i = 180 - 36

2i = 144

i = 144/2

i = 72

Answer:

-4

Step-by-step explanation:

Here, we want to get the greatest integer less than -3

The integer less than -3 that is the greatest is -4

It is the internet directly after it to the left of the number line

Answer:

x = √213

I would appreciate this being marked as brainliest...

Step-by-step explanation:

This is a Pythagoras question because we are given two right-angled triangles and no internal angles other than the right angles.

That 7 is annoying because it won't form a Pythagorean triplet with 10. It means that the answer will probably be in radical form.

We can use radicals to represent the common side.

Introduce Pythagoras. The equation below forms a circle on a graph by the way where r is the radius of the circle.

a² + b² = c²;

Substitute the first triangle.

10² + 7² = c²;

100 + 49 = c²;

149 = c²;

c = √149;

Substitute the second triangle.

(√149)² + 8² = x²;

149 + 64 = x²;

213 = x²;

x = √213;

The solution to the system of equations y = x − 5 and y = 5x − 17 is x = 3 and y = -2

The system of equations is given as

y = x − 5

y = 5x − 17

Substitute y = x − 5 in the equation y = 5x − 17

So, we have

x - 5 = 5x − 17

Evaluate the like terms

4x = 12

Divide both sides by 4

x = 3

Substitute x = 3 in y = x − 5

y = 3 − 5

So, we have

y = -2

Hence, the solution is x = 3 and y = -2

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If Roland has Z-score for his test 0.6, the standard deviation for this set of test scores is 7.5

To find the standard deviation for this set of test scores, we can use the z-score formula:

Z-score = (X - μ) / σ

Where:
- Z-score is 0.6 (given)
- X is Roland's score of 70
- μ is the mean score of 65.5
- σ is the standard deviation we need to find

Now we can plug in the values and solve for σ:

0.6 = (70 - 65.5) / σ

Next, we can rearrange the equation to solve for σ:

σ = (70 - 65.5) / 0.6

Finally, calculate the standard deviation:

σ = 4.5 / 0.6

σ ≈ 7.5

The standard deviation for this set of test scores is approximately 7.5.

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Take the square root of each side.

\(\sf \sqrt{x^{2} } =\sqrt{25} \\\\\\ x=\± 5\)

Answer:

B. Kevin

Step-by-step explanation:

First off, great job on answering the rest! Kevin worked the fastest because he has the lowest time spent per flyer. This means that for every flyer he spent time working on, he would complete it faster than Bill or Dante. This can also be estimated from the table given because although kevin only made 6, he spent only 24 minutes while Bill spent 56 minutes and only made 8. The smaller minutes spent in comparison to the amount of flyers made shows that Kevin is the fastest.

Answer:

D

Step-by-step explanation:

It is meaningful to compute the probability that a continuous random variable is greater than or equal to a number, less than or equal to a number, or between two numbers.

In probability theory, a continuous random variable is a variable that can take on any value within a certain range or interval.

As a result, the probability that a continuous random variable takes on a specific value is zero, since there are infinitely many possible values the variable can take on.

Therefore, it is not meaningful to compute the probability that a continuous random variable is exactly equal to a number.

However, it is meaningful to compute the probability that a continuous random variable is greater than or equal to a number, less than or equal to a number, or between two numbers.

These probabilities can be calculated using the cumulative distribution function (CDF) of the random variable. The CDF gives the probability that a random variable takes on a value less than or equal to a certain value, which can be used to compute probabilities for ranges of values.

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The third term of the geometric series is 7*(1/2)^2 = 3.5 and the second term is 7*(1/2)^1 = 3.5. When the third term is divided by the second term, the result is 1.

A geometric series is a sequence of numbers where each term is obtained by multiplying the previous term by a constant. In this particular series, the first term is 7 and the sum is 4. This means that the constant is 1/2. To find the third term, we multiply the second term by the constant, which gives us 7*(1/2)^2 = 3.5. To find the result when the third term is divided by the second term, we divide 3.5 by 3.5, which gives us 1. This is true for any infinite geometric series with the same first term and sum, because the ratio between every two consecutive terms is always the same.

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Answer:90 degrees

Step-by-step explanation:

Angle b is a right angle

Answer:

30 cm

Step-by-step explanation:

Make sure all units are the same!

P = Perimeter

A = Area

Formula used for similar figures:

\(\frac{A_{1}}{A_{2}} = (\frac{l_{1}}{l_{2}})^{2}\) —- eq(i)

\(\frac{P_{1}}{P_{2}} = \frac{l_{1}}{l_{2}}\) ———— eq(ii)

Applying eq(ii):

∴\(\frac{25}{P_{2}} = \frac{10}{12}\)

Cross-multiplication is applied:

\((25)(12) = 10P_{2}\)

\(300 = 10P_{2}\)

\(P_{2}\) has to be isolated and made the subject of the equation:

\(P_{2} = \frac{300}{10}\)

∴Perimeter of second figure = 30 cm

You go to Cent xD ain't no one going to answer that