using polar coordinates, evaluate the improper integral ∫∫r2e−4(x2 y2) dx dy.

The unit rate of the 76th player is [tex]1\frac{1}{3}[/tex] miles per hour.

The unit rate of the 91st player is [tex]1\frac{1}{9}[/tex] miles per hour.

The unit rate of the 44th player is [tex]1\frac{1}{2}[/tex] miles per hour.

What is an improper fraction?

An improper fraction is one in which the denominator is greater than or equal to the numerator. 5/2 and 8/5, for example, are incorrect fractions. Every fraction is made up of two parts: the numerator and the denominator. Proper fractions and improper fractions are the two main types of fractions in mathematics based on the numerator and denominator values.

For 76 number of players:

In 1/4 hour he can run 1/3 mile

In 1 hour he can run (1/3)/(1/4)mile

                                 =4/3 miles

Convert it into a mixed number:

                                = [tex]1\frac{1}{3}[/tex] miles per hour  

For 91 number of players:

In 3/4 hour he can run 5/6 mile

In 1 hour he can run (5/6)/(3/4)mile

                                 =10/9 miles

Convert it into a mixed number:

                                = [tex]1\frac{1}{9}[/tex] miles per hour

For 44 number of players:

In 1/2 hour he can run 3/4 mile

In 1 hour he can run (3/4)/(1/2)mile

                                 =6/4 miles

                                 =3/2 miles

Convert it into a mixed number:

                                = [tex]1\frac{1}{2}[/tex] miles per hour  

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In the  of 76th player's unit rate is 1 1/3 miles per hour , 91st player's unit rate is 1 1/9miles per hour and the 44th player's unit rate is 1 1/2miles per hour.

When expressed as a fraction, a unit rate has a denominator of one unit. To write a rate as a unit rate, divide the rate's numerator and denominator by the rate's denominator.

For a total of 76 players:

He can run 1/3 mile in 1/4 hour.

He can run (1/3)/(1/4) mile in 1 hour.

= 4/3 miles

Change it to a mixed number:

= 1 1/3 miles per second.

For a total of 91 players:

He can run 5/6 mile in 3/4 hour.

He can run (5/6)/(3/4) mile in an hour.

= 10/9 miles

Change it to a mixed number:

= 1 1/9 miles per hour.

For a total of 44 players:

He can run 3/4 mile in half an hour.

He can run (3/4)/(1/2) mile in 1 hour.

=6/4 miles

=3/2 miles

Change it to a mixed number:

= 1 1/2 miles per hour.

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When the length of JK is 9.5 feet and the angle L is 61 degrees  trigonometric ratio of the tangent, solving yields: KL=9.5ft/1.804 KL=5.27 ft.

The relationship between triangle side lengths and angles is investigated in the branch of mathematics known as trigonometry. The application of geometry in astronomical study gave rise to the area's first appearance during the Hellenistic era, roughly in the third century BC. Exact methods mathematics focuses on certain trigonometric functions and how they might be applied to calculations. In trigonometry, there are six widely used trigonometric functions. Their respective names and acronyms are sine, cosine, tangent, cotangent, secant, and cosecant (csc). Trigonometry is the study of the properties of triangles, especially of right triangles. The features of all geometric shapes are studied in geometry, though.

given

△JKL

JK=9.5ft

∠L=61∘

Find:KL

We may determine the outcome using the tangent's trigonometric ratio.

Tan = JK/KL = 61

When we separate KL, we get KL=9.5ft/tan61.

When the length of JK is 9.5 feet and the angle L is 61 degrees  trigonometric ratio of the tangent, solving yields: KL=9.5ft/1.804 KL=5.27 ft.

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The correct question is :-

Given triangle JKL, find the length of KL. The length of JK is 9.5 ft and the angle L is 61 degrees.

We can use some rules for exponents to simplify the expression, we will get:

7⁵/7¹  = 7⁴

Here we need to use two properties about exponents, these are:

The exponent of 1 bassically does nothing:

x¹ =x

The rule for divisions is:

xᵃ/xᵇ = x⁽ᵃ ⁻ ᵇ ⁾

Now we have the expression:

7⁵/7

We can rewrite that as:

7⁵/7¹

Now we can use the second property to get:

7⁵/7¹ = 7⁵ ⁻ ¹ = 7⁴

That is the simplified expression.

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Answer:

b = 5

Step-by-step explanation:

  10(b+2) + 3 = 73

10b + 20 + 3 = 73

              10b = 50

               ∴ b = 5

The value of x in the given equation is 17.5

A mathematical statement that has a "equal to" symbol between two expressions with equal values is called an equation. as in 3x + 5 Equals 15, for instance. Equations come in a variety of forms, including linear, quadratic, cubic, and others. In this article, let's learn more about math equations.

There are three major forms of linear equations: point-slope form, standard form, and slope-intercept form.

In the given equation:-

2x+20-55=0

x=35/2

x=17.5

Hence the value of x is 17.5

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Answer: Angle C for AAS, Side AC for SAS

Step-by-step explanation:

Your instructions were confusing since in the text it asks for SAS and in the image it asks for AAS so I just gave both.

Euclid is the father of geometry

Euclid and René Descartes was often called the father of modern mathematics because he created analytic geometry and the Cartesian coordinate system.

What is modern mathematics?

Different methodologies have been used in contemporary mathematics. It focuses mostly on entities, whereby interconnections follow themes and patterns.

René Descartes was a person who was very famous for his philosophy of science and mathematics. He was considered a person who evaluate and made various new development in the field of math as well as time in separate fields like geometry and algebra with new properties that is developed by him.

He had the main idea of having finite and infinite particles or numbers in geometry. And also used various scientific methods to prove that.

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Andrea's distance from the base of the cliff is given as follows:

233 feet.

The three trigonometric ratios are defined as follows:

For this problem, we have a right triangle in which:

Hence the distance is obtained as follows:

tan(42º) = 209.75/d

d = 209.75/tan(42º)

d = 233 feet.

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This square pyramid has a volume of 48 cm³.

The term "square pyramid" refers to a three-dimensional geometric form with a square base and four faces or sides that are triangular and meet at a single point (called the vertex). Its five faces give it the name "pentahedron."

The five faces of a square pyramid, four of which are triangles, are square in shape. An upright pyramid's base is also square-shaped.

Although the square pyramid and square prism both have a square base, the four lateral faces of the former are triangular and the latter are rectangular.

V=13s2h, where s is the length of the square base's sides, is a formula that may be used to calculate the volume of a pyramid whose base is square.

           v = 1/3 * b² *h

           v = 1/3 * 6² *4

           v = 1/3 *36 *4

           V = 48cm³

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In optics, an image is defined as the group of focus points of light rays coming from an object. A real image is a collection of focus points actually made by converging rays, while a virtual image is a collection of focus points made by extensions of diverging rays.

The real image is produced by the intersection of light rays. It can be obtained on a screen. Hence, projectors form real images.

The virtual image is formed when the light rays appear to be originating from a point but do not actually meet. It can be seen by human eyes.

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On solving the provided question we can say that value equation is y = mx => -7 = m * 4 => m = -7/4 and x² + y² = 13 => x² + (-7)² = 13 => x

An equation is a mathematical formula that connects two assertions using the equal sign (=) to denote equivalence.

Squaring both sides and simplifying we get:

3m² + 56m + 36 = 0

The coordinates of the points A and B are (-12,103) and (-3,-89) respectively.

y = mx => -7 = m * 4 => m = -7/4

x² + y² = 13 => x² + (-7)² = 13 => x

So the equation of the tangent line is y = m(x - 0) + 0, where m = -(x+4)/(y-7)

Now we can substitute the coordinates of the center of the circle into the equation of the tangent line to get y = -(x+4)/(y-7) * x

Squaring both sides and simplifying we get:

3m² + 56m + 36 = 0

b) To find the coordinates of the points A and B, we can use the equation of the tangent line and the equation of the circle.

We know that the equation of the tangent line is y = -(x+4)/(y-7) * x and the equation of the circle is (x+4)² + (y-7)² = 13.

We can substitute y = -(x+4)/(y-7) * x into the equation of the circle and solve for x.

This equation simplifies to 3x² + 56x + 36 = 0, which factors to (x+12)(x+3) = 0

y = -(-12+4)/(y-7) * -12 = 8/(y-7) * 12 = 96/(y-7)

y = 96 + 7 = 103 and y = -96 + 7 = -89

The coordinates of the points A and B are (-12,103) and (-3,-89) respectively.

We know that the equation of the tangent line is y = mx and the equation of the circle is x² + y² = 13.

We can substitute the point (4, -7) for x and y in the equation of the tangent line and the equation of the circle and solve for m and x,y respectively.

y = mx => -7 = m * 4 => m = -7/4

x² + y² = 13 => x² + (-7)² = 13 => x

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The equation relating the two variables is r + 2b = 20.

The equation with r as the dependent variable is r = 20 - 2b.

The equation with b as the dependent variable is b = (20 - r)/2.

An equation is a mathematical statement that is made up of two expressions connected by an equal sign.

Example:

2xx + 3 = 9 is an equation.

We have,

Number of rings = r

Number of bracelets = b

Cost of one ring = $1

Cost of one bracelets = $2

Total cost = $20

Now,

r + 2b = 20

The equation with r as the dependent variable.

r = 20 - 2b

The equation with b as the dependent variable.

2b = 20 - r

b = (20 - r)/2

Thus,

The equation with r as the dependent variable is r = 20 - 2b.

The equation with b as the dependent variable is b = (20 - r)/2.

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Answer:

69

Step-by-step explanation:

33 + (23)2 =

= 33 + 46

= 69

This is the correct answer to the problem you posted. If you meant something else, you should have written it differently.

Use / for fractions and ^ for exponents.

The distance up the building that the ladder would reach, given the ladder height and the base of the building, is 13.4 ft.

To find out how far up the building the ladder reaches, we can use the Pythagorean theorem. The theorem states that in a right triangle, the sum of the squares of the lengths of the two shorter sides is equal to the square of the length of the longest side (the hypotenuse).

Assuming the height that the ladder reaches is x, the formula would be:

x ² + 4 ² = 14 ²

x ² = 14 ²  - 4 ²

x ² = 196 - 16

x = √ 180

x = 13. 4 ft

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Answer:

1) The standard form of a circle's equation is (x - h)² + (y - k)² = r². (h,k) is the center and r is the radius.

2) The vertex is the midpoint of the directrix and the focus. It involves the parabola changing directions, and at any point the directrix and the focus will be equidistant from the parabola. The focus is a single point inside the curve of the parabola, and the directrix is a line outside the parabola.

3) The standard form of an equation of an ellipse is:

(x − h)2a 2 +( y − k) 2 b 2 = 1 ( x − h ) 2 a 2 + ( y − k ) 2 b 2 = 1. (h,k) is the center, a is the distance from the center to the horizontal vertices and b is the distance from the center to the vertical vertices.

4) The foci are (−c,0) and (c,0). The ellipse is the set of all points (x,y) which are the sum of the distances from (x,y) to the foci is constant.  (a,0) is a vertex of the ellipse. Finally, the endpoints of the minor axis is a co-vertex of the ellipse.

5) A hyperbola has two standard equations. These equations of a hyperbola are based on its transverse axis and conjugate axis. The standard equation of the hyperbola is [(x² / a²) – (y² / b²)] = 1, where the X-axis is the transverse axis and the Y-axis is the conjugate axis.

6) The foci are located on the line that where the transverse axis is. The conjugate axis is perpendicular to the transverse axis and has the co-vertices as its endpoints. The center of a hyperbola is the midpoint of both the transverse and conjugate axes, where they intersect.

Let me know if I didn't answer all of your questions, I hope this helps! :)

Step-by-step explanation:

The test that we have here is the one tailed test.

From the direction of change of the parameter, we would be able to tell if the test is a one tailed test or not. That is, if the parameter is increasing or decreasing.

This test is looking to determine if the bags are underfilled (decreased)  or if they are overfilled (increased).

The test's alternative hypothesis is written in a way that it predicts the direction of the difference between two groups. The test is one-tailed if the alternative hypothesis predicts a direction of change

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Answer:

Outputs are-

f(-2) = 7

f(-1) = 5

f(0) = 3

f(3) = -3

Step-by-step explanation:

Given, f(x) = -2x+3

To find, 1) f(-2)

2) f(-1)

3) f(0)

4) f(3)

Solution,

1) Substituting x for -2,

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

2) Substituting x for -1,

f(-1) = -2 x -1 + 3 = 5

3) Substituting x for 0,

f(0) = -2 x 0 + 3 = 3

4) Substituting x for 3,

f(3) = -2 x 3 + 3 = -3

1) X-Rays are dangerous because: "They have short wavelengths that can penetrate materials, and their high energy can damage matter."  (Option B)

2) From the table given, the wave that has the lowest energy is Wave 4.

The relationship between frequency and wavelength is inverse. The wavelength of the wave with the highest frequency is the shortest. One-half the wavelength equals twice the frequency. As a result, the wavelength ratio is inverse to the frequency ratio.

To summarize, waves transport energy. The quantity of energy carried by them is proportional to their frequency and amplitude. The greater the frequency, the greater the energy, and the greater the amplitude, the greater the energy.

Also, the lower the frequency, the lower the energy, and the lower the amplitude, the lower the energy. Thus, the wave with the lowest energy is Wave 4.

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Answer:

[tex] \frac{23}{3} ....in \: fraction \: or \\ 7.666666...in \: decimal[/tex]

Step-by-step explanation:

Greetings!!!

look at the image attached

Hope it helps!!!

Correlation Coefficient (r) o A model is deemed to be "excellent fit" if r is near to 1 (or -1). o The model is "not a good match" if r is close to 0. o The model has a "perfect fit" if r = 1, with all data points falling on the line. o The two variables do not have a linear connection if r = 0.

The strength of the linear link between two separate variables, x and y, is shown by correlation coefficients.

A positive relationship is shown by a linear correlation coefficient greater than zero.

Indicating a negative association is a value less than zero. The two variables x and y do not have any relationship when their values are 0, to sum up.

The correlation coefficient (r2) is a statistic that expresses how closely two variables' movements are related to one another.

To determine the linear relationship between two variables, the Pearson product-moment correlation, the most popular correlation coefficient, is used.

However, this correlation value might not necessarily be a reliable indicator of reliance in a non-linear connection.

Hence, Correlation Coefficient (r) o A model is deemed to be "excellent fit" if r is near to 1 (or -1).

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The fraction which is recommended as value of iron in 1 cup of oatmeal as per the given relation is equal to 2/15.

As given in the question,

Daily recommended value of iron in the given cup of oatmeal

3 / 4 cup of oatmeal  gives  1/10 daily value of iron.

Fraction recommended as daily value of iron is given by :

⇒ 3 /4 cup of oatmeal = 1 /10 value of iron

⇒ 1 cup of oatmeal = ( 1 × 4 ) / ( 3 × 10 ) value of iron

⇒ 1 cup of oatmeal = ( 4 ) / ( 30 ) value of iron

⇒ 1 cup of oatmeal = ( 2 ) / ( 15 ) value of iron

Therefore, the fraction recommended as daily value of iron is equal to

( 2/15 ).

The above question is incomplete, the complete question is :

In 3/4 cup of oatmeal, there is 1/10 of the recommended daily value of iron. What fraction of the daily recommended value of iron is in 1 cup of oatmeal? ( multiplication and division equation)

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Answer:

7

Step-by-step explanation:

7

On solving the provided question we cans say that quadratic equation - x^2-5x-4 = 0 and x = 1 , 3

A quadratic equation is x ax2+bx+c=0, which is a quadratic polynomial in a single variable. a 0. The Fundamental Theorem of Algebra ensures that it has at least one solution since this polynomial is of second order. Solutions may be simple or complicated. An equation that is quadratic is a quadratic equation. This indicates that it has at least one word that has to be squared. The formula "ax2 + bx + c = 0" is one of the often used solutions for quadratic equations. where are numerical coefficients or constants a, b, and c. where the variable "X" is unidentified.

here, we have

quadratic equation -

x^2-5x-4 = 0

x(x-1) -3(x-3) =

(x-1)(x-3) = 0

x = 1 , 3

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The proof is given below

We can start by using the definition of the trigonometric functions cosec(A), tan(A), and cot(A):

cosec(A) = 1/sin(A)

tan(A) = sin(A)/cos(A)

cot(A) = 1/tan(A) = cos(A)/sin(A)

Now, we can substitute these definitions into the equation:

cosec(A)/(tan(A) + cot(A)) = 1/sin(A) / (sin(A)/cos(A) + cos(A)/sin(A))

Simplifying the right-hand side gives us:

1/sin(A) / (sin(A)(1/cos(A) + 1/sin(A))) =

1/sin(A) / (sin(A)/sin(A)cos(A) + sin(A)) =

1/sin(A) / (1 + sin(A))

Finally,

multiplying both sides by sin(A) (which is not 0 because A is not a multiple of pi/2)

cosec(A)/(tan(A) + cot(A)) * sin(A) = 1/sin(A) / (1 + sin(A)) * sin(A) = 1 / (1 + sin(A)) * sin^2(A) = cos(A)

Therefore, cosec(A)/(tan(A) + cot(A)) = cos(A)

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a) Tunnel A is a circle with center (-14, 0) and radius 12, meaning that both the width and the height are of 12.

b) Tunnel B is a parabola that has a width of 32 feet and a height of 16 feet.

c) The maximum height of Tunnel A is of 12 feet and of Tunnel B is of 16 feet, hence, since the height of the truck is of 13.5 feet, it can pass through Tunnel B without damage, as it's height is greater than 13.5 feet.

The equation of a circle of center  and radius r is given by:

(x-x₀) +(y-y₀) = r²

For Tunnel A, the equation is given by:

x² + y² + 28x + 52 = 0

Completing the squares:

(x + 14)² + y² = -52 + 14²

(x + 14)² + y² = 144.

Tunnel A is a circle with center (-14, 0) and radius 12, meaning that both the width and the height are of 12.

A quadratic equation is modeled by:

y = ax^2 + bx + c

For Tunnel B, the equation is given as follows:

x² - 36x + 16y + 68 = 0.

16y = -x² + 36x - 68.

Simplifying by 16:

y = -0.0625x² + 2.25x - 4.25.

Hence the coefficients are a = -0.0625, b = 2.25, c = -4.25, and the maximum height is:

y₀=(2.25)²-49-0.0625)(-1.25)/4(-0.0625) = 16

The width is the difference between the roots, which, using a calculator, are: 2 and 34, hence the width is of 32 feet.

This implies that the tunnel B is a parabola that has a width of 32 feet and a height of 16 feet.

For item c, we have that:

The maximum height of Tunnel A is of 12 feet and of Tunnel B is of 16 feet, hence, since the height of the truck is of 13.5 feet, it can pass through Tunnel B without damage, as it's height is greater than 13.5 feet.  

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Correct question:

An architect has designed two tunnels. Tunnel A is modeled by x2 + y2 + 28x + 52 = 0, and tunnel B is modeled by x2 – 36x + 16y + 68 = 0, where all measurements are in feet. The architect wants to verify whether a truck that is 8 feet wide and 13.5 feet high can pass through the tunnels.

Part A: Write the equation for Tunnel A in standard form and determine the conic section. Show your work. (4 points)

Part B: Write the equation for Tunnel B in standard form and determine the conic section. Show your work. (4 points)

Part C: Determine the maximum height of each tunnel. Is the truck able to pass through either tunnel without damage? If so, which tunnel(s) and why? Show your work. (7 points)

The total cost of the fencing as a function of the length of the x side is 11x

They are the set of numbers and symbols that are related by the different mathematical operation signs such as addition, subtraction, multiplication, division among others.

To solve this problem we must perform the following algebraic operations with the given information

Information about the problem:

Calculating the total cost:

Total cost = (southern + east + west) * side

Total cost = (5 + 3 + 3)*x

Total cost = 11x

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Answer:

Step-by-step explanation:

m/s =kph divided by  3.600000

m/s =13  divided by3.600000

m/s =3.611111

Answer: 216.67 meters/ min

Step-by-step explanation: Converting 13 km/h to meters per minute

First, we will convert 13 km to meters

So, we know 1 km = 1000 meters

Then 13 km/ h =  x

x = 1000 multiplied 13

x = 13,000 meters/ h

Now, we will convert to hours to minutes

We know 1 h = 60 min

Then 13,000 meters/ 60 min

That = 216.667 meters/ min

After approximating

Answer = 216.7 meters / min

Step-by-step explanation:

I never thought about this before, but yes, they can.

linear functions :

explicit :

y = ax + b

recursive :

xn+1 = xn + a

because

a(x + 1) + b = ax + b + a

ax + a + b = ax + a + b

exponential functions :

explicit :

y = a^x

recursive :

xn+1 = xn × a

because

a^(x + 1) = a^x × a = a^(x + 1)

remember,

a^x = a×a×a×a×a×...×a×a×a

x times a multiplied by itself.

2 dilated means that the measurement of an area has increased or expanded in size.

This can be a linear measurement such as the diameter of a circle, or the area of a square or rectangle. The formula for the area of a circle is A=πr2 where r is the radius of the circle. A 2 dilated measurement would mean that the radius has doubled, so the formula would be A=π(2r)2 A=4πr2. This would mean that the area of the circle has increased by a factor of 4. Similarly, if the length and width of a rectangle were 2 dilated, the area would be A=2L2W, which would be four times the original area.

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The Least Common Factor of 4 and 15 is 1. The factors of 4 are 1, 2 and 4, and the factors of 15 are 1, 3, 5 and 15. Hence, 1 is the Least Common Factor of 4 and 15.

A factor is a number that fully divides another number.

To put it another way, if adding two whole figures results in a product, also the figures we're adding are factors of the product because the product is separable by them.

Factor simply translates to" doer" in Latin. therefore, a" factor" in English is a" actor,"" element," or" element" in a situation or number.

Success can depend on charm, and having a terrible constitution can affect from inadequate exercise.

Variable factors are those whose employment varies in proportion to affair; further are employed when product rises and smaller when product falls.

Labor, energy, and raw accoutrements employed directly in product are exemplifications of typical variable rudiments.

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