please help with easy math triangle question

Since t-value  is less than the critical value, at α = 0.05, therefore we can find that the mean sound level is reduced after installing the new vinyl flooring.

The Mayo Clinic conducted a study on the impact of sound levels on patient healing and discovered a significant correlation between hospital ambient sound levels and slower postsurgical healing. In light of this, Ardmore Hospital installed new vinyl flooring with the goal of reducing mean sound levels in the corridors.

To determine whether this installation had the intended effect, a hypothesis test was performed with a null hypothesis that the mean sound level after installation was the same as or higher than the mean sound level with the old flooring, and an alternative hypothesis that the mean sound level after installation was lower.

A one-tailed t-test was used with a significance level of α = 0.05, and the test statistic was calculated using the sample mean, standard deviation, and size for both old and new flooring data. The calculated t-value was compared to the critical value obtained from a t-table or calculator, and since the calculated t-value was less than the critical value, the null hypothesis was rejected.

Therefore, it can be concluded that there is evidence to suggest that the mean sound level after installing the new vinyl flooring is lower than the mean sound level with the old flooring, and at α = 0.05, it can be said that the mean sound level is reduced after installing the new vinyl flooring.

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The dimensions of the poster are 2 inches by 15 inches.

Algebra is a branch of mathematics that deals with symbols and the rules for manipulating these symbols. It is used to solve problems and represent mathematical relationships and formulas. In algebra, letters and other symbols are used to represent numbers and quantities, allowing us to express mathematical relationships and patterns in a more general and abstract way.  Common topics in algebra include equations, inequalities, functions, and graphing.

An equation is a mathematical statement that shows that two expressions are equal. Equations typically include variables, which are placeholders for unknown or changing values, and mathematical operations, such as addition, subtraction, multiplication, and division, that manipulate these values.

In the given question,

Let's use algebra to solve for the dimensions of the poster.

Let w be the width of the poster in inches. Then, according to the problem statement, the length of the poster is 9 more inches than three times its width, or 3w + 9. The area of the poster is given as 30 square inches, so we can set up the equation:

A = lw = (3w + 9)w = 30

Expanding the right-hand side and simplifying, we get:

3w^2 + 9w - 30 = 0

Dividing both sides by 3, we obtain:

w^2 + 3w - 10 = 0

This is a quadratic equation that we can solve using factoring or the quadratic formula. Factoring, we can write:

(w + 5)(w - 2) = 0

This gives us two solutions: w = -5 and w = 2. Since the width of the poster must be a positive number, we can discard the negative solution and conclude that the width of the poster is 2 inches.

To find the length, we can substitute w = 2 into the expression we found earlier for the length:

l = 3w + 9 = 3(2) + 9 = 15

Therefore, the dimensions of the poster are 2 inches by 15 inches.

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You would have to pay 67% of the original price to buy the coat and  Juan paid 1. 08% of the purchase price as the total bill.

percentage, a relative value indicating hundredth parts of any quantity.

If the coat is on sale for 33% off the original price, then the price you would have to pay is equal to 100% - 33% = 67% of the original price.

So, you would have to pay 67% of the original price to buy the coat.

If Juan paid 8% sales tax on his purchase, then the total bill would be the original price plus 8% of the original price.

Let's say the purchase price of the video game is x.

Then, the sales tax would be 8% of x, which is 0.08x.

So, the total bill that Juan paid is x + 0.08x = 1.08x.

Therefore, Juan paid 1. 08% of the purchase price as the total bill.

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By converting the Cartesian coordinates (1,−5) to polar coordinates with r>0 and 0≤θ<2π r = √26 and θ = 4.909784033953984

To convert the Cartesian coordinates (1,−5) to polar coordinates with r>0 and 0≤θ<2π, we need to use the following formulas:
r = √(x² + y²)
θ = tan⁻¹(y/x)
Plugging in the given values of x = 1 and y = -5, we get:
r = √(1² + (-5)²)
r = √(1 + 25)
r = √26
θ = tan⁻¹(-5/1)
θ = tan⁻¹(-5)
θ = -1.373400766945016
Since we want 0≤θ<2π, we need to add 2π to θ to get the correct value:
θ = -1.373400766945016 + 2π
θ = 4.909784033953984
So the polar coordinates are:
r = √26
θ = 4.909784033953984

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Answer:

y=3x+8

2y=6x+16

2(3x+8)=6x+16

6x+16=6x+16

Infinite Many Solutions

The smallest positive integer that is a multiple of 2, 6, and 9 is 18.

To find the smallest positive integer that is a multiple of 2, 6, and 9, we need to find the smallest common multiple of these three numbers. We can do this by finding the prime factorization of each number and taking the highest power of each prime factor.

The prime factorization of 2 is 2, the prime factorization of 6 is 2 x 3, and the prime factorization of 9 is [tex]3 * 3[/tex]. To find the smallest common multiple, we take the highest power of each prime factor, which gives us [tex]2 * 3 * 3 = 18[/tex]. Therefore, 18 is the smallest positive integer that is a multiple of 2, 6, and 9.

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Answer:

Perimeter, in feet, of quadrilateral A'BAC = 2(a + b) feet

Last Option

Step-by-step explanation:

Reflecting a figure does not change its dimensions, only its orientation

Therefore when ΔABC is reflected across the line BC, the reflected image is another triangle ABC with the same dimensions and BC as the common side, B and C points are unchanged and A is reflected to A'

Therefore the quadrilateral ABCA' will have sides a and b

Perimeter of a quadrilateral = 2 x (sum of sides)

= 2(a + b)

This is the last answer choice

See figure  for an understanding

We can see here that the an expression for the perimeter, in feet,

of quadrilateral A'BAC will be: E. 2(a + b).

Perimeter is the total length of the boundary of a two-dimensional geometric shape, such as a polygon or a circle. It is the distance around the shape and is measured in units such as centimeters, meters, feet, or yards.

We see here that the above option is correct. It should be noted that as the image is reflected across side BC, the dimensions didn't change. Thus, the reflected image alongside the triangle gives a quadrilateral.

The perimeter of a quadrilateral = sum of all the sides of a quadrilateral.

Thus, for  quadrilateral A'BAC, the perimeter = a + a + b + b = 2a + 2b = 2(a + b).

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The value of the expression is f(g(x)) = f(x^2) = 2(x²) + 1 = 2x² + 1.

A function is composed in mathematics when two functions, f and g, are used to create a new function, h, such that h(x) = g(f(x)). The function of g is being applied to the function of x, in this case. Hence, a function is essentially applied to the output of another function.

Given that,

f(x)=2x+1 and g(x)=x²

To get the composite function we substitute the value of g(x) in the x-value of the function of f(x).

f(g(x)) = f(x^2) = 2(x²) + 1 = 2x² + 1

Hence, the value of the expression is f(g(x)) = f(x^2) = 2(x²) + 1 = 2x² + 1.

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Answer:

if we follow the rule using y=mx+c, we would use rise and run so the distance is 3 up and 4 run.

7 total distance i guess.....i hope this helps.

As seen in the attached picture, the account by Grant and the painting are consistent with each other since they both depict a serious and formal situation.

Ulysses S. Grant was an American general and statesman who served as the 18th President of the United States. He was born in 1822 in Ohio and graduated from the United States Military Academy at West Point in 1843. He served in the Mexican-American War and later became a leading Union general in the American Civil War.

As we compare his account of Lee's rendition and the painting provided, we can conclude that they are indeed consistent. Both show how serious and formal the meeting was. Grant even describes the way Lee was dressed, which is confirmed by the painting.

The picture and the account appear in the attachment below.

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Answer: 0.00003396739

Step-by-step explanation:

hope this helps

what 5x10 = 50

60x 10 =600

30x1 =30

1x1=1

2x2=4

Answer:

Step-by-step explanation: shyweydehdeecebccecjeejddijde shut the f

Answer:

$2.23

Step-by-step explanation:

To find the cost of the bottle of water, we need to subtract the amount of change that Angie received from the twenty-dollar bill that she used to pay. The cashier gave her back $10 in one ten-dollar bill, $7 in seven one-dollar bills, $0.75 in three quarters, and $0.02 in two pennies.

Therefore, the total change that Angie received was: $10 + $7 + $0.75 + $0.02 = $17.77

To find the cost of the bottle of water, we need to subtract this amount from the twenty-dollar bill: $20.00 - $17.77 = $2.23

Therefore, the bottle of water cost $2.23.

The solution of the given system of equations is x = -1 and y = 4.

The given system of equations is 4x + 8y = 40 and 6x + 3y = 6.

To solve this system of equations, we need to use elimination method. We can subtract 6x from both sides of the second equation and subtract 4x from both sides of the first equation. We get:

8y = 40 - 4x and 3y = 6 - 6x

We can now divide both sides of the second equation by 3 to obtain y = 2 - 2x.

We can substitute the value of y from the second equation into the first equation to get 4x + 8(2 - 2x) = 40, which simplifies to -8x = 8. We can solve this equation for x by dividing both sides by -8, resulting in x = -1.

Substituting the value of x into either equation, we can obtain y = 4. So, the solution of the given system of equations is x = -1 and y = 4.

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The other three angle measures in the quadrilateral, in addition to <1 = 45 degrees, are: <2 = <3 = 135 degrees, and <4 = 45 degrees.

What is the quadrilateral?

A quadrilateral is a polygon with four sides and four angles. In other words, it is a closed figure that has four straight sides and four vertices (corners).

If <1 has a measure of 45 degrees, then the sum of the angle measures in the quadrilateral must be 360 degrees. Let's call the other three angles in the quadrilateral <2, <3, and <4.

Then we can use the fact that the opposite angles in a quadrilateral add up to 180 degrees to write two equations:

<1 + <3 = 180 (opposite angles)

<2 + <4 = 180 (opposite angles)

We also know that <1 = 45, so we can substitute that in the first equation:

45 + <3 = 180

Solving for <3, we get:

<3 = 135

Now we can substitute the values of <1 and <3 into the sum of angle measures equation:

45 + <2 + 135 + <4 = 360

Simplifying, we get:

<2 + <4 = 180

This is the same equation as the opposite angles equation, so we know that <2 and <4 are also opposite angles. Therefore, we can conclude that:

<2 = <3 = 135 degrees

<4 = 45 degrees

Hence, the other three angle measures in the quadrilateral, in addition to <1 = 45 degrees, are: <2 = <3 = 135 degrees, and <4 = 45 degrees.

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The probability that the point will be in the square is given by P = 63.70 %

The probability that an event will occur is measured by the ratio of favorable examples to the total number of situations possible

Probability = number of desirable outcomes / total number of possible outcomes

The value of probability lies between 0 and 1

Given data ,

Let the probability that the point will be in the square be P

Now , the radius of the circle r = 1 inch

So , the area of the circle = πr²

The area of circle = 3.14 inches²

Now , the diagonal of the square = 2 inches

So , the area of the square = 2 inches²

And , probability that the point will be in the square P = ( area of the square / area of circle ) x 100

On simplifying , we get

The probability that the point will be in the square P = 2 / 3.14

The probability that the point will be in the square P = 0.6370

The probability that the point will be in the square P = 63.70 %

Hence , the probability is 63.70 %

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Step-by-step explanation:

1. R

2. W

3. O

4. RW

5. OW

6 RO

7. RWO

2.

1.UG

2. G

3. MG

4. MU

5. M

6. U

The given quantity 240 g can be divided as 100 g, 60 g, and 80 g such that the quantities are in the ratio 5: 3: 4.

A ratio is a comparison between two or more quantities that are measured in the same units.

It is often expressed as a fraction or a colon and is used to describe the relative size or amount of one quantity compared to another.

Here we have 240g

We need to divide 240 g into a 5: 3: 4 ratio

Let 5x, 3x, and 4x be the divided parts

=> 5x + 3x + 4x = 240 g

=> 12x = 240 g

=> x = 20 g  

Now calculate the divided parts as follows

5x = 5(20 g) = 100 g

3x = 3(20 g) = 60 g

4x = 4(20 g) = 80 g

Therefore,

The given quantity 240 g can be divided as 100 g, 60 g, and 80 g such that the quantities are in the ratio 5: 3: 4.  

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30 pounds = 480 ounces

1 pound (lb) is equal to 16 Ounces (oz).

1 lb = 16 oz

The mass m in ounces (oz) is equal to the mass m in pounds (lb) times 16:

[tex]m_{(oz)} = m_{(lb)} * 16[/tex]

Convert 30 lb to ounces:

[tex]m_{(oz)} = 30 lb * 16 = 480[/tex] [tex]oz[/tex]

Therefore, 30 pounds converted to ounces is 480 ounces.

Answer: 30 pounds = 480

Step-by-step explanation:

The area of the rectangle is 9 square units

First, we need to know the properties of a rectangle. They are;

From the diagram shown, we have that;

Length of the transformed shape(parallelogram to rectangle) = 3 units

Width = 3 units

The formula for the area of a rectangle is expressed as;

Area = lw

Substitute the values

Area = 3(3)

Area = 9 square units

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Answer:13.O 14.M 15. N

Step-by-step explanation:

these are the graphs that represent the situations best

The x-values that are excluded from the solution set of the rational equation are those that would make the denominator of any of the fractions equal to zero. These are the values x = -2 and x = 2, since they would make the denominators (x+2) and (x-2) equal to zero.

To solve the equation for x, we can first find a common denominator for all the fractions and then combine them into one fraction:

(2)/(x+2)=(3)/(x-2)-(7)/((x+2)(x-2))

Multiply both sides of the equation by the common denominator (x+2)(x-2) to eliminate the fractions

:2(x+2)(x-2) = 3(x+2)(x-2) - 7

Distribute the terms:

2x^2 - 8 = 3x^2 - 12x + 12 - 7

Combine like terms and rearrange the equation:

x^2 - 12x + 13 = 0

Use the quadratic formula to find the values of x:

x = (-b ± √(b^2 - 4ac))/(2a) = (-(-12) ± √((-12)^2 - 4(1)(13)))/(2(1)) = (12 ± √(144 - 52))/(2) = (12 ± √92)/(2) = (12 ± 2√23)/(2) = 6 ± √23

Therefore, the solutions for x are 6 + √23 and 6 - √23.

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The expression 0.26 when written as a fraction in its lowest term is 13/50

Based on the question, we have a set of values that can be used in our calculations.

Fraction = 0.26

As a general rule, a fraction can be expressed as a/b

Where

Using the above values as a guide, we have the following expression

Fraction = 0.26

Multiply the fraction by 1

Fraction = 0.26 * 1

Express 1 as 100/100

So, we have

Fraction = 0.26 * 100/100

Evaluate the product of 0.26 and 100

This gives

Fraction = 26/100

Reduce the quotient of 26 and 100 to the lowest terms by dividing by 2

Fraction = 13/50

Hence, the fraction of 0.26 is 13/50

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The length of the side x in the triangle is approximately 7.5.

A right-angled triangle is a geometric shape that consists of three sides and three angles. One of the angles in a right-angled triangle measures 90 degrees, which is called a right angle. The side opposite to the right angle is called the hypotenuse, and the other two sides are called the legs or catheti.

The Pythagorean theorem is a fundamental property of right-angled triangles that states that the sum of the squares of the two shorter sides (legs) is equal to the square of the hypotenuse. This can be written as:

a² + b² = c²

where a and b are the lengths of the legs, and c is the length of the hypotenuse.

Right-angled triangles also have many real-world applications, such as in construction, engineering, architecture, and navigation. They are used to calculate distances, heights, angles, and other measurements in many different contexts.

Using trigonometry, we can solve for x:

sin(32°) = x/14

x = 14 * sin(32°)

x ≈ 7.5 (rounded to the nearest tenth)

Therefore, the length of the side x in the triangle is approximately 7.5.

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The length of arcs MH and TY in terms of π are 18π cm and 22π cm respectively.

Arc length = (central angle / 360) x (2 x π x radius)

Arc length of sector of circle = (θ/360º) × 2πr

For the sector MRH:

θ = 180° - 72° = 108°

r = 30 cm

Arc length MH = (108°/360º) × 2π × 30 cm

Arc length MH = 9 × 2π cm

Arc length MH = 18π cm.

For the sector MRH:

θ = 72°

r = (25 + 30) cm = 55 cm

Arc length TY = (72°/360º) × 2π × 55 cm

Arc length TY = 1 × 2π × 11 cm

Arc length TY = 22π cm

Therefore, the length of arcs MH and TY in terms of π are 18π cm and 22π cm respectively.

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angles of 0°, 30°, 45°, 60°, and 90° are 100 feet, 86.6 feet, 71.4 feet, 50 feet, and 0 feet, respectively.

To answer this question, we need to use a protractor, a straightedge, and the given graph to estimate the height of the blade tip when the blade is at angles of 0°, 30°, 45°, 60°, and 90°. The arc on the graph represents a portion of the blade tip's path. Assume the blade rotates counterclockwise and the blade is at an angle of 0° when the blade tip is directly to the right of the top of the vertical shaft. This position has been labeled as 0° on the graph.

Using the protractor, we can measure the angles on the graph, which is marked in 15° increments. For each angle, we can measure the horizontal position of the blade tip from the graph. The heights of the blade tips for 0°, 30°, 45°, 60°, and 90° can be estimated using the Pythagorean theorem.

At 0°, the height of the blade tip is 100 feet (which is equal to the length of the blade). At 30°, the height of the blade tip is 86.6 feet. At 45°, the height of the blade tip is 71.4 feet. At 60°, the height of the blade tip is 50 feet. At 90°, the height of the blade tip is 0 feet.

Therefore, the estimated heights of the blade tip when the blade is at angles of 0°, 30°, 45°, 60°, and 90° are 100 feet, 86.6 feet, 71.4 feet, 50 feet, and 0 feet, respectively.

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Answer:

b

Step-by-step explanation:

its really easy when u read it multiple of times

1. The difference between the average change in stock prices in the Nasdaq-100 (or returns) is calculated by subtracting the average of the stock prices at the beginning of the period from the average of the stock prices at the end of the period. To find the average change in stock prices, we can use the formula:

Average change in stock prices = (Average of stock prices at the end of the period - Average of stock prices at the beginning of the period) / (Number of periods)

2. To find the quantile for a given level q, we can use the quantile() function in R. The quantile() function takes two arguments: the data frame and the level q. The function returns the value such that q% of the data points are smaller than this value and (1-q)% of the data points are larger. For example, to find the 85%-quantile for the returns of the SPY ETF, we can use the following code: quantile(SPY_returns, q = 0.85)

The result of this function will be the 85%-quantile for the SPY ETF returns, rounded to 4 decimals. Therefore, the difference between the average change in stock prices in the Nasdaq-100 (or returns) is -0.003, and the 85%-quantile for the SPY ETF returns is 0.0084.

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(3+3i)/(-1-3i) = -3 + 9i

To divide the complex numbers (3+3i)/(-1-3i), follow these steps:

Step 1: Multiply both the numerator and the denominator by the conjugate of the denominator. The conjugate of -1-3i is -1+3i. (3+3i) / (-1-3i) * (-1+3i) / (-1+3i)

Step 2: Apply the distributive property (FOIL) in both the numerator and the denominator.

Numerator: (3 * -1) + (3 * 3i) + (3i * -1) + (3i * 3i) = -3 + 9i - 3i - 9i^2 Denominator: (-1 * -1) + (-1 * 3i) + (-3i * -1) + (-3i * 3i) = 1 - 3i + 3i + 9i^2

Step 3: Remember that i^2 = -1 and simplify both the numerator and the denominator.

Numerator: -3 + 9i - 3i + 9(-1) = -3 + 9i - 3i - 9 = -12 + 6i

Denominator: 1 - 3i + 3i - 9(-1) = 1 + 9 = 10

Step 4: Divide the real and imaginary parts by the simplified denominator.

Real part: -12/10 = -6/5

Imaginary part: 6i/10 = 3i/5

So, the division of the complex numbers (3+3i)/(-1-3i) results in the complex number -6/5 + 3i/5.

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Answer:

6.3829787234%

Step-by-step explanation: