Help! Need this fast!

a) The coordinates of the point  P is ( π, -1), b. The coordinates of the point  Q is (3π/2, 0).

In mathematics, a curve is a continuous and smooth line that can be represented by a mathematical function. A curve function is simply a mathematical equation or formula that defines a curve.

For example, the function y = x² defines a parabolic curve that opens upwards, while the function y = sin(x) defines a periodic curve that oscillates between -1 and 1.

Curves can be represented in various ways, such as graphs, equations, and parametric equations. The graph of a curve is a visual representation of the curve on a coordinate plane, where the x-axis represents the horizontal axis and the y-axis represents the vertical axis. The equation of a curve can be used to find the y-coordinate of any point on the curve given its x-coordinate. Parametric equations, on the other hand, define the curve in terms of a set of parameter values, which can be used to determine the x- and y-coordinates of any point on the curve.

Given:

Graph of y= cosx°

To find: Coordinates of point P and Q

Solution:

y= cosx

= coordinates of P( π, -1)

= coordinates of Q(3π/2, 0)

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To find the volume of the solid obtained by rotating region A, which is bounded by the curves y = x^2, y = b, and the y-axis, about the x-axis, we can use the Shell Method. With the given values of b = 1 and a = 2, the integral for the volume is V = ∫(2πx)(b - x^2) dx, where x ranges from 0 to a.

The Shell Method is a technique used to calculate the volume of a solid of revolution by integrating the surface area of cylindrical shells. In this case, we want to find the volume of the solid obtained by rotating region A about the x-axis.
Region A is bounded by the curves y = x^2, y = b (where b = 1), and the y-axis. The bounds for x are from 0 to a, where a = 2.
To apply the Shell Method, we consider an infinitesimally thin cylindrical shell with height (b - x^2) and radius x. The volume of each shell is given by the surface area of the shell multiplied by its thickness and height. The surface area of the shell is given by 2πx.
By integrating the volume of each shell with respect to x over the interval [0, 2], we obtain the integral ∫(2πx)(b - x^2) dx.
Evaluating this integral will give us the exact volume of the solid obtained by rotating region A about the x-axis.

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The highest score for the given distribution is 25.

This is because the distribution is divided into ranges, with the first range being 20-25, the second range being 15-19, the third range being 10-14, and the fourth range being 5-9.

The highest score in each range is the number on the right side of the dash.

Therefore, the highest score in the first range is 25, the highest score in the second range is 19, the highest score in the third range is 14, and the highest score in the fourth range is 9.

Since 25 is the highest score among all of the ranges, it is the highest score for the entire distribution.

The correct answer is c) 25.

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The difference in b-tree and b +tree, b -tree is a self balancing tree data structure that maintains sorted data and b +tree is a modified version of b -tree.

b -tree is used to sort the data with various pieces facilities such as insertion ,deletion and search etc  whereas b +tree is a modified version of b -tree providing all the functions smoothly and quickly .

In b -tree, both internal nodes and leaf nodes are used to store records and keys whereas in b +tree keys are stored in internal nodes whereas records are storing leaf nodes

In b +tree, no duplication is allowed but in b +tree duplication may occur

A b +tree usually preferred as an access structure to a data file as as the height of the tree remains balanced and less as compared to b -tree . We can assess the data stored in b +tree sequentially as well as directly . keys are used for indexing . Faster search queries as the data is stored only on a leaf nodes.

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Answer:

The answer was C. 16ft on Edge 2022.

Step-by-step explanation:

Just think of Y as the height of the graph and X as the width.

With this in mind, it asks what's the length of the base of the graph.

In this case, the answer would be 16 since it goes from 0 or the origin to 16 on the X-axis.

Hence, the answer is C. 16ft.

Answer:

160.

Step-by-step explanation:

The area of the base is 64 since each side is 8, 8x8 is equal to 64. Then you have the lateral faces with a length of 8, and a height of 6, which is 48, but since they are triangles, you divide by 2, finally add 24+24+24+24+64 and your final answer is 160.

Answer:

His speed is 66.25 miles/hour

Step-by-step explanation:

The rule of the constant speed is:

Speed = Distance ÷ Time

∵ Karim starts his journey at 11:00 a.m. and finishes at 3:00 p.m.

→ Count the hours from 11: 00 a.m. to 3:00 p.m.

∴ He takes 4 hours ⇒ (3 + 12 - 11)

∴ T = 4 hours

∵ The mileage reader is 66,750 miles at 11:00 a.m.

∵ The mileage reader is 67,015 miles at 3:00 p.m.

→ The distance that Karim is driving = the difference between them

∴ The distance that karim is driving = 67,015 - 66,750

∴ D = 265 miles

→ Substitute the values of D and T in the rule above

∵ S = 265 ÷ 4

∴ S = 66.25 miles/hour

∴ His speed is 66.25 miles/hour

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:

the tringale has 3 lines of symmetry

The distance from an angle of depression to the boat at 21° to angle of depression of 50° is 112 feet

Information from the question

A boat is heading towards a lighthouse, where Yaritza is watching from a vertical distance of 139 feet

Yaritza measures an angle of depression to the boat at point AA to be 21°

Yaritza takes another measurement and finds the angle of depression to the boat (now at point BB) to be 50°

the distance from point AA to point BB = ?

The direction of movements describes a right triangle of

opposite =  ?

adjacent = 139 feet

The distance is calculated using tan, TOA let the angle be x

tan x = Opposite / Adjacent

for x = 21 point AA is solved

tan 21 = ? / 139

? = 139 * tan 21

? = 53.357

for x = 50 point BB is solved

? = 139 * tan 50

? = 165.654

the distance from point AA to point BB

= 165.654 - 53.357

= 112.297

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Answer:

7:5

Step-by-step explanation:

49/7 = 7 and 35/7 = 5

to get a ratio, divide both side by the same number that is a facttor for both.

Answer:

The answer you are looking for is as x increases, y decreases then increases

Step-by-step explanation:

The default constructor initializes the width, height, and length of a rectangle to 0 in a single line.

To implement a default constructor that initializes the width, height, and length of a rectangle to 0, you can define the constructor in the class as follows:

class Rectangle {

private:

 int width;

 int height;

 int length;

public:

 Rectangle() {

   width = 0;

   height = 0;

   length = 0;

 }

};

In the above code, the class Rectangle is defined with three private member variables: width, height, and length. The default constructor Rectangle() is declared and defined within the class. Inside the default constructor, the width, height, and length are set to 0 using assignment statements.

By defining this default constructor, whenever you create an instance of the Rectangle class without providing any arguments, the width, height, and length will automatically be initialized to 0.

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Answer:

A= 2

B=28

C=0

Step-by-step explanation:

ax2 + bx + c=0

u can add lines to split the figure into a triangle and two rectangles.

Area of the figure

= (12x15)/2 + 6x4 + 2x5

=124 yd^2

Answer:

Step-by-step explanation:

Answer:

  1 > x ≥ -23

Step-by-step explanation:

  \(3>\dfrac{11+x}{4}\ge -3\\\\12>11+x\ge-12\qquad\text{multiply by 4}\\\\\boxed{1>x\ge-23}\qquad\text{subtract 11}\)

Answer:

total=4.5+9=13.5

Step-by-step explanation:

0.5×3=1.5. 3×3=9

1.5×3=4.5 A=4.5. A=9. 4.5+9=13.5

f(x) = 2 ( x² + 8x ) - 7

     = 2 [(x + 4)² - 4²] - 7

     = 2 (x + 4)² - 32 - 7

     = 2 (x + 4)² - 39

(x+4)² = x² + 2*x*4 + 4² = x² + 8x + 4²

it's why

x² + 8x = (x + 4)² - 4²

Answer:

y=2(x+4)^2−39

Step-by-step explanation:

Based on my calculation that´s the answer :-)

For the bell-shaped graph of the normal distribution of weights of Hershey kisses, the area under the curve is 1, the value of the median and mode both is 4.5338 G and the value of variance is 0.0108.

In the given question,

The weight of the chocolate and Hershey Kisses are normally distributed with a mean of 4.5338 G and a standard deviation of 0.1039 G.

We have to find the answer of many question we solve the question one by one.

From the question;

Mean(μ) = 4.5338 G

Standard Deviation(σ) = 0.1039 G

(a) We have to find for the bell-shaped graph of the normal distribution of weights of Hershey kisses what is the area under the curve.

As we know that when the mean is 0 and a standard deviation is 1 then it is known as normal distribution.

So area under the bell shaped curve will be

\(\int\limits^{\infty}_{-\infty} {f(x)} \, dx\)= 1

This shows that that the total area of under the curve.

(b) We have to find the median.

In the normal distribution mean, median both are same. So the value of median equal to the value of mean.

As we know that the value of mean is 4.5338 G.

So the value of median is also 4.5338 G.

(c) We have to find the mode.

In the normal distribution mean, mode both are same. So the value of mode equal to the value of mean.

As we know that the value of mean is 4.5338 G.

So the value of mode is also 4.5338 G.

(d) we have to find the value of variance.

The value of variance is equal to the square of standard deviation.

So Variance = \((0.1039)^2\)

Variance = 0.0108

Hence, the value of variance is 0.0108.

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Answer:

50

Step-by-step explanation:

Correct question

-16/5, 8, -20. What is the next term of the geometric sequence.

The nth term of a geometric sequence is expressed as:

Tn = ar^n-1

From the sequence:

a is the first term = -16/5

n is the number of term = 4(since next term is 4th term

r is the common ratio = (8)÷(-16/5) = 8×-5/16

r = -5/2

Substitute the given values into the formula

T4 = -16/5(-5/2)^4-1

T4 = -16/5(-5/2)³

T4 = -16/5×-125/8

T4 = -16/8×-125/5

T4 = -2×-25

T4 = 50

Hence the next term is 50

Answer:

Step-by-step explanation:

it is important to verify these results by solving the equations or using numerical methods if necessary, as singularities can be challenging to determine analytically in some cases.

To classify the singularities of each function, we need to determine the nature of the singularities (if any) and classify them accordingly. Let's analyze each function:

i. f(z) = 2

In this case, f(z) is a constant function, so it has no singularities. It is analytic and well-defined throughout the complex plane.

ii. f(z) = -z - sin(z)

The singularity of this function occurs when the denominator becomes zero. In this case, we have a simple pole when z + sin(z) = 0. It is challenging to find the exact values of z that satisfy this equation analytically. However, we can use numerical methods or graphical analysis to locate the singularities. The singularities are isolated points in the complex plane where the function becomes infinite.

iii. f(z) = e²²

This function is a constant, and constants are always well-defined and do not have singularities. There are no singularities in this function.

iv. f(z) = -1(z - 1)³ sin(z) / z

The singularity of this function occurs when the denominator, z, becomes zero. Thus, we have a simple pole at z = 0. Additionally, we have another pole at z = 1 because the term (z - 1)³ in the numerator cancels the corresponding factor in the denominator. The function becomes infinite at these points, which are singularities.

To summarize:

i. f(z) = 2: No singularities.

ii. f(z) = -z - sin(z): Singularities at isolated points where z + sin(z) = 0.

iii. f(z) = e²²: No singularities.

iv. f(z) = -1(z - 1)³ sin(z) / z: Singularities at z = 0 and z = 1 (simple poles).

Remember, it is important to verify these results by solving the equations or using numerical methods if necessary, as singularities can be challenging to determine analytically in some cases.

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Answer:

(fg)(2)= -14

Step-by-step explanation:

(fg)(2) = (2²-11)(4-2)

          = -7(2)

          = -14

Answer:

x = 29 degrees

Step-by-step explanation:

Since this is a right triangle, we can use trig functions

sin theta = opposite/ hypotenuse

sin x = 13/27

Taking the inverse sin of each side

sin^ -1 (sin x) = sin^-1 (13/27)

x =28.78220468

Rounding to the nearest degree

x = 29 degrees

Answer: 29º approximately

Step-by-step explanation:

Using SOH CAH TOA, determine the trig function that relates opposite side and hypothenuse. Yes, sine.

\(sin=\frac{opposite}{hypothenuse}\)

\(sin=\frac{13}{27}\)

\(sin^-^1=28.8\)

After calculating the partial derivatives and the cross product, we can find the double integral of the magnitude over the region (0 ≤ r ≤ √3, 0 ≤ θ ≤ 2π). This double integral gives the surface area of the part of the plane inside the cylinder.

To find the area of the surface of the part of the plane x + 2y + 3z = 1 that lies inside the cylinder x^2 + y^2 = 3, we can use a parametric representation for the plane and cylinder intersection.

Let x = r * cos(θ) and y = r * sin(θ), where r^2 = 3 (from the cylinder equation). Now, we can find z in terms of r and θ using the plane equation:

z = (1 - x - 2y) / 3
z = (1 - r * cos(θ) - 2r * sin(θ)) / 3

Now, we have the parametric representation of the intersection: (r * cos(θ), r * sin(θ), (1 - r * cos(θ) - 2r * sin(θ)) / 3). To find the surface area, we need to calculate the partial derivatives with respect to r and θ and then find the magnitude of the cross product.

After calculating the partial derivatives and the cross product, we can find the double integral of the magnitude over the region (0 ≤ r ≤ √3, 0 ≤ θ ≤ 2π). This double integral gives the surface area of the part of the plane inside the cylinder.

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the correct answer is 4.05

Answer:

we need a diagram.

Step-by-step explanation:

Answer: b

Step-by-step explanation:

4-3

——-

13.40- 10.05

= 1/3.35

=b

lol use a calculator???????