I need the real answer of my question. Is Sasha right or is Danielle right?

Answer:

slope = -3

Step-by-step explanation:

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Answer:

Given:

radius of bigger half circle[R]=(7+7+14)/2=14cm

radius of smaller half circle [r]=14/2=7cm

Area of shaded region =1/2[πR² -πr²]

=1/2×22/7×[14²-7²]=231cm²

Area of shaded region=231cm²

Answer:

8

Step-by-step explanation:

If you plug in the answers it will give you 9x6= 54 which is wrong and 9x7=63 and 9x9=81 but 9x8=72.

Answer:

C   length = 8

Step-by-step explanation:

Area of Rectangle = lw

A = lw    Substitute l = (2x + 4) ; w = 9

72 = (2x + 4)9

72 = 18x + 36

36 =        -36

36 = 18x

36/18 = x

 2 = x

 Substitute into l = 2x + 4 ; l = 2(2) + 4; l = 4 + 4 ; l = 8

Answer:

1400 is the perimeter

Step-by-step explanation:

238x2=476

435x2=870

27x2=54

476+870+54=1400

Answer:

x=125    y=130

Step-by-step explanation:

I believe if you add 50+75 you get x

50+75=125

And if you subtract 180 from 50 you get y

180-50= 130

The reason being is because the two numbers inside the triangle add up to the number outside of the triangle "x". Then you would subtract 180 from 50 because that is a supplementary angle meaning it adds up to 180 to get the number on the outside of the triangle "y".

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The percent markup of a department, if they sell 300 shirts at a cost of $9 each is 50%

According to the question, we learn that a department store buys 300 shirts at a cost of $1,800 and sells them for $9 each. This means :

The selling price of 300 shirts = 300 × $9

The selling price of 300 shirts = $2700

Selling price > cost price i.e., 2700 > 1800

when selling price is greater than cost price it means department store made a profit.

Profit = selling price - cost price

Profit = 2700 - 1800 = $900

Profit percentage = profit/ cost price × 100

Profit % =\(\frac{900}{1800} \times 100\)

Profit % = 50%

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Answer:

41

Step-by-step explanation:

93-52=41

The equation of the line perpendicular to the tangent to the curve y=x^3-4x+1 at the point (2,1) is y = (-1/8)x + 9/8.

To find the equation of the line perpendicular to the tangent to the curve at (2,1), we need to first find the slope of the tangent line at that point.

The derivative of y=x^3-4x+1 is y'=3x^2-4, so the slope of the tangent line at (2,1) is y'(2) = 3(2)^2-4 = 8.

Since we want the line perpendicular to the tangent, we know that its slope will be the negative reciprocal of the tangent's slope. Therefore, the slope of the line we're looking for is -1/8.

Next, we use the point-slope form of the equation of a line to write the equation of the line with the slope we found and passing through the point (2,1):

y - 1 = (-1/8)(x - 2)

Simplifying and putting the equation in slope-intercept form:

y = (-1/8)x + 9/8

Therefore, the equation of the line perpendicular to the tangent to the curve y=x^3-4x+1 at the point (2,1) is y = (-1/8)x + 9/8.

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Answer:  Any equation that is of the form y = -3/4x + b, where b is a real number, will be parallel to y = -3/4x - 2.

Step-by-step explanation:

A parallel line has the same slope as the original line.  Therefore, if the equation of the original line is y = mx+b, m (the slope) will remain the same, while b can change.

The equation  y = -3/4x - 2 has the same slope -3/4, represents a line which is parallel to the line y=-3/4 x -2

A function that can be represented in the form of y =mx +c, is called a Linear Function. where m is the slope and c is the y-intercept.

The slope of the given line can be found as;

A parallel line has the same slope as the original line.  Thus, if the equation of the original line is y = mx+b, m (the slope) will remain the same, while b can change.

Any equation that is of the form y = -3/4x + b,

where b is a real number, will be parallel to the equation.

y = -3/4x - 2.

m = -3/4

The equation  y = -3/4x - 2 has the same slope -3/4, represents a line which is parallel to the line y=-3/4 x -2

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Answer:

x= -29

Step-by-step explanation:

You have the point (-29, 44). The x coordinate is -29, which means your equation is x=-29. You can check your answer by graphing x= -29, y=52, and (-29, 44) on desmos.

Answer:

\(313.3333\%\)

Step-by-step explanation:

Based on given conditions, formulate:

\( \frac{310 - 75}{75} \)

Calculate the sum:

\( \frac{253}{75} \)

Simplify it:

\( \frac{47}{15} \)

Convert that to a decimal:

\(3.133333\)

Multiply that:

\(3.133333 \times \frac{100}{100} \)

Calculate that:

\( \frac{3.133333 \times 100}{100} \)

Convert that:

\(313.3333\%\)

Answer:

23.6°

Step-by-step explanation:

We solve using the Trigonometric function of Sine

sin θ = Opposite/Hypotenuse

Opposite = 2

Hypotenuse = 5

m ∠W = θ

Hence:

sin θ = 2/5

sin θ = 0.4

θ = arc sin (0.4)

= 23.578178478°

Approximately = 23.6°

To find inflection points from the second derivative, follow these steps  Calculate the second derivative of the function.  Set the second derivative equal to zero and solve for the critical points.Determine the sign changes of the second derivative around each critical point. Identify the intervals where the sign changes occur.

Analyze the behavior of the function within each interval to determine the presence of inflection points. To understand the process more thoroughly, start by calculating the second derivative of the function. This can be done by differentiating the function twice with respect to the independent variable. Next, find the critical points by setting the second derivative equal to zero and solving the resulting equation. Once you have the critical points, examine the sign changes of the second derivative around each point.

A change from positive to negative or vice versa indicates a potential inflection point. Finally, analyze the behavior of the function within each interval to confirm the presence of inflection points. Keep in mind that not all critical points will correspond to inflection points, so it is essential to consider the behavior of the function in each interval.

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Given:

The inequality is

\(x+19\leq 23\)

To find:

The value of x and then graph on the number line.

Solution:

We have,

\(x+19\leq 23\)

Subtracting 19 from both sides, we get

\(x+19-19\leq 23-19\)

\(x\leq 4\)

It means all the real values of x which are less than or equal to 4 are in the solution set. So, an arrow approaches towards left from x=4 as shown in the below figure.

This is how the linear function looks.

A quotient of a number and 6

Explanation: Quotient means that you divide something by another. Let's let n be the "number". Therefore, "a quotient of a number and 6" refers to n6 or n÷6 .

The given line y = -2x + 3 will cross the y-axis at (0, 3).

A coordinate plane is a two-dimensional plane that consists x-axis and a y-axis. These are perpendicular to each other and will be intersected at the point called the origin.  

The coordinates of the point that lies on the y-axis are (0, y), Similarly, the coordinates of the point that lies on the x-axis are (0, x).    

Here we have

The equation of the line is y = -2x + 3  

To find the required point take x = 0

=> y = -2(0) + 3

=> y = 0 + 3

=> y = 3

Therefore,

The given line y = -2x + 3 will cross the y-axis at (0, 3).

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Answer:

x - y = 4

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Given

x + y = - 5 ( subtract x from both sides )

y = - x - 5 ← in slope- intercept form

with slope m = - 1

Given a line with slope m then the slope of a line perpendicular to it is

\(m_{perpendicular}\) = - \(\frac{1}{m}\) = - \(\frac{1}{-1}\) = 1 , thus

y = x + c ← is the partial equation

To find c substitute (7, 3) into the partial equation

3 = 7 + c ⇒ c = 3 - 7 = - 4

y = x - 4 ← equation in slope- intercept form

subtract y from both sides

0 = x - y - 4 ( add 4 to both sides )

4 = x - y , that is

x - y = 4 ← equation in standard form

Two children are both 26.25 inches tall, but one has a head circumference of 17.2 inches and the other has a head circumference of 17.4 inches. The circumference is the distance around the edge of a circular object. It is the measurement of the perimeter of a circle.

The formula for calculating the circumference of a circle is:

C = 2πr

where C is the circumference, π (pi) is a mathematical constant approximately equal to 3.14159, and r is the radius of the circle (the distance from the center of the circle to any point on the edge).

This can be because every individual, including children, have unique body proportions. Factors such as genetics, nutrition, and health can influence the differences in head circumferences, even if the children have the same height. So, it is quite normal for two children with the same height to have different head circumferences.

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Answer:

Yes

Step-by-step explanation:

The reason can simply because they are similar shapes (triangle) which reports same sides same angle

The given statement "An algorithm is a calculation that determines how long it will take to solve a problem." is False.

An algorithm is not just a calculation that determines how long it will take to solve a problem. An algorithm is a step-by-step set of instructions or a process used to solve a problem or perform a specific task. It is a systematic approach that allows a computer or human to break down a problem into smaller, manageable parts and reach a solution effectively.

Algorithms are the foundation of computer programming and can be applied in various fields such as mathematics, data processing, and problem-solving. They can be simple, like finding the largest number in a list, or complex, like solving a Rubik's Cube.

Efficiency is a key factor in evaluating algorithms. The time and resources required for an algorithm to solve a problem can vary greatly depending on the method used. However, the primary purpose of an algorithm is to provide a clear and concise procedure to reach a solution, rather than just estimating the time needed to solve a problem.

In summary, an algorithm is a well-defined process designed to perform a specific task or solve a problem, rather than just calculating the time required to do so. Its effectiveness depends on its efficiency, accuracy, and the simplicity of the steps involved.

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Answer:

\(\frac{31}{33}\)

Step-by-step explanation:

You need a common denominator to add.  The smallest number that is divisible by both 11 and 3 is 33.  Rewrite both fractions with a denominator of 33

\(\frac{3}{11}\) x \(\frac{3}{3}\)         \(\frac{3}{3}\) is just another name for 1.  We are making an equivalent fraction.  Multiple 3 x3 for the top and 11 x 3 for the bottom to get:

\(\frac{9}{33}\)

Do the same for \(\frac{2}{3}\)

\(\frac{2}{3}\) x \(\frac{11}{11}\)       \(\frac{11}{11}\) is just another name for 1.  We are making an equivalent fraction.  Multiple 2 x 11 for the top and 3 x 11 for the bottom to get:

\(\frac{22}{33}\)

Now add these two fractions together:

\(\frac{9}{33}\) + \(\frac{22}{33}\) = \(\frac{31}{33}\)

The equation of the line is written in the different forms

Calculate the slope (m) using the formula:

m = (0 - 6) / (8 - 0)

m = -6 / 8

m = -3/4

Plug in the slope (m) and one of the given points (x1, y1) into the slope-intercept form to find the y-intercept (b):

y = mx + b

6 = (-3/4)(0) + b

6 = b

Substitute the y-intercept (b) into the equation:

y = (-3/4)x + 6

In point-slope form:

y - y1 = m(x - x1)

Using the point (0, 6):

y - 6 = (-3/4)(x - 0)

y - 6 = (-3/4)x

In standard form:

To convert the equation to standard form, we can manipulate the equation to have the form Ax + By = C, where A, B, and C are constants.

y - 6 = (-3/4)x

Multiply both sides by 4 to eliminate the fraction:

4(y - 6) = -3x

4y - 24 = -3x

Rearrange the equation to have x and y on the same side and a constant on the other side:

3x + 4y = 24

This is the equation in standard form.

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Answer: -8969.31346074

Explanation:  its the answer because thats what i got when i did the math

The function f(x) = x² - 3x is not one-to-one.

To determine whether the function f(x) = x² - 3x is one-to-one, we need to examine whether it takes on the same value twice.

The function f(x) = x² - 3x is a quadratic function represented by a parabola. To find the roots of the function, we set f(x) equal to zero:

x² - 3x = 0

Factoring out x:

x(x - 3) = 0

From this, we find that the function has two roots: x = 0 and x = 3. These are the values of x for which f(x) equals zero.

Since the function has two distinct values of x that yield the same output of zero, we can conclude that it is not one-to-one.

A one-to-one function should never take on the same value twice, but in this case, we have multiple x values (0 and 3) that result in the same output (zero).

Therefore, the function f(x) = x² - 3x is not one-to-one.

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The resultant of the given three vectors is 39kN<295∘. The calculation is shown in the image below.

Using the analytical method, the resultant when the following three vectors are added together:

V1 = 30kN<240∘,

V2 = 15kN<130∘, and

V3 = 20kN<0∘ is 39kN<295∘.

Analytical method involves the method of adding vectors algebraically by converting the vector to the horizontal and vertical components.

In the question given, Vector

V1 = 30kN<240∘ is given to us.

Hence, it is necessary to find out the horizontal and vertical components as shown below, 

V1 = 30(cos 240k + sin 240j) kN = -15k -25.98j kN.

Hence, the resultant of the three vectors can be computed by adding the three vectors' horizontal and vertical components using the following formula.

Rx = Σ FxRy

= Σ FyR

= sqrt(Rx^2 + Ry^2)θ

= tan^-1(Ry/Rx)

Applying this formula, the resultant of the three vectors is R = 39 kN and the angle made by the resultant with the x-axis is 295°.

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Answer:

Between 6 and 9 hours.

Reason: the slope increases during 6-9 hour period.