30 POINTS WILL GIVE BRAINLIEST

If the sum of the areas of the two unshaded sectors above is 24π, what is the radius of the circle?

Select one:
A. 3
B. 6
C. 12
D. 24

The solution set can be written in parametric vector form as: \(X = x3 [-1 0 1]^T + x2 [-2 1 0]^T\)

We can rewrite the system of equations in matrix form as AX = 0, where \(A =[2 2 4]\\[-4 -4 -8]\\[0 -3 -9]\)

\(X = [x1 x2 x3]^T\)

To solve for the solution set, we can row reduce the augmented matrix \([A|0].\\[2 2 4|0]\\[-4 -4 -8|0]\\[0 -3 -9|0]\)

\([2 2 4|0]\\[0 0 0|0]\\[0 -3 -9|0]\)

\([2 2 4|0]\\[0 0 0|0]\\[0 1 3|0]\)

\([2 2 4|0]\\[0 0 0|0]\\[0 1 3|0]\)

\([1 1 2|0]\\[0 0 0|0]\\[0 1 3|0]\)

Therefore, the system has two free variables, x2 and x3, while x1 is a pivot variable. where x2 and x3 are arbitrary constants.

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The water level after the rainfall is 1.75 below average.

From the information, the water level in Colorado river is 2.55 m below average. a large rainfall caused and the water level to rise 0.8 m.

The water level after the rainfall will be:

= -2.55 + 0.8

= -1.75

Therefore, the water level after the rainfall is 1.75 below average.

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Answer:

15 goes under y and 6 and 8 go under x

Step-by-step explanation:

Answer:

20 ÷ (4x +2y) is your answer

Answer:

What is the greatest number of binders Eula can buy? Answer=5

What is the greatest number of notebooks Eula can buy? Answer=10

If Eula buys 7 notebooks, what is the greatest number of binders she can buy? Answer=1

Step-by-step explanation:

EDGE. 2022

Answer:

slope is 3

y-intercept =-24

Step-by-step explanation:

solve for y

y+3=3(x-7)

y+3=3x-21

y=3x-21-3

y=3x-24

Answer:

Below

Step-by-step explanation:

Vertex is at  (h,k) = (-3,3)

Vertex form of the parabola is then

  y = a ( x - -3)^2 + 3        <======need to find 'a'

the 'P' value is   the distance form the vertex to the focus   (which is the same as the distance from the vertex to the directrix )

 for this parabola    P = 1    

       you should know that   P = 1/(4a)   so   1 = 1 / (4a)  shows a = 1/4

then your parabola becomes   y = 1/4 (x+3)^2 + 3    BUT 'a'  needs to be modified to a negative because it is a upside down (dome-shaped) parabola so

                      y = -1/4 (x+3)^2 + 3  

or          y = -1/4 x^2  - 6/4x + 3/4

Answer:

-1.555

Step-by-step explanation:

52/(-45)= -1.555555

Answer:

well i just worked it out and got -1.155556...

Step-by-step explanation: Sorry if this wasn't very helpful, i really did try though have an amazing day :D

Answer:

The answer to the chart is y=x-1

If all the data points fall on the least-squares regression line in simple linear regression this is indication of overfitting. The correct answer is E. None of the above statements are true.

In simple linear regression, if all the data points fall exactly on the least-squares regression line, it means that the regression model perfectly explains the relationship between the independent variable and the dependent variable. However, this scenario is highly unlikely in practice and is often an indication of overfitting.

Here's a breakdown of each statement:

A. F-statistic = 0: The F-statistic is used to test the overall significance of the regression model. If all data points fall on the regression line, it suggests a perfect fit, and the F-statistic would be large rather than zero.

B. MS(Regression Model) = 100%: MS stands for mean square, and this statement implies that all the variation in the dependent variable can be attributed to the regression model. However, in reality, there is typically some degree of error or residual variation that cannot be explained by the model.

C. SS(Total) = 0: SS stands for sum of squares, and SS(Total) represents the total sum of squares of the dependent variable. If all data points fall on the regression line, it would imply that there is no variation in the dependent variable, which is highly unlikely.

D. SS(Regression Model) = SS(Total): SS(Regression Model) represents the sum of squares explained by the regression model. If all data points fall on the regression line, it implies that the regression model perfectly explains all the variation in the dependent variable. However, in practice, there is typically some residual variation that cannot be explained by the model.

Therefore, none of the statements mentioned are true when all the data points fall on the least-squares regression line.

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Answer:

6x + 20 + 4x + 80 - 2x=180

6x + 4x - 2x= 180 - 80 - 20

8x = 80

x = 10

The value of x in the triangle is 10, the value of each angle are; 80, 40 , 60 respectively

The total angle can be added as

note that the total angle in the triangle is 180

\(6x + 20 + 4x + 80 - 2x=180\)

\(6x + 4x - 2x= 180 - 80 - 20\)

\(8x = 80x = 10\)

Then we can know the angles as ;

\(6x + 20=(6*10) +20 =80\\4x = 4*10 = 40\\80 - 2x = 80 - (2*10) = 60\)

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Answer:

D

Step-by-step explanation:

every time the mile increases he burns more calories you can see that when you look at it closely

Answer:

  See attached

Step-by-step explanation:

You want the numbers for quotient, dividend, and remainder in the area model of 49÷3.

The number in each rectangle is its area, which is the product of the divisor on the left and the quotient at the top. These can be considered the length and width of the rectangle. The rectangle area is their product.

The remainder is put in the box at upper right. It is a value that is smaller than the divisor on the left.

The line at the bottom summarizes the division. The quotient is the sum of the quotient values at the top of the model, and the remainder is what's left over: the number that is too small to divide further.

Answer:

The area is 452cm

Step-by-step explanation:

For the big square we have to multiply 15*18 and that is the area so-

15*18=270

Next we multiply 13 and 14

13*14=182

And now we add 270 and 182 to get the total area

270+182=452

750 mL is equivalent to 25.36 oz.

When measuring liquids, the metric system and the US customary system are commonly used. In the metric system, the standard unit of measurement for liquids is milliliters (mL) and in the US customary system, it's ounces (oz).

To convert between these units, you can use a conversion factor.

One way to convert mL to oz is to use the conversion factor of 1 oz = 29.5735 mL. To find the number of ounces in 750 mL, you can use this conversion factor to set up an equation:

750 mL = x oz

Where x is the number of ounces you want to find. To solve for x, you can divide both sides of the equation by the conversion factor:

x = 750 mL / 29.5735 mL/oz

x = 25.36 oz

It's important to note that this is an approximation and for more accurate measurements, you should use an online calculator or consult a chart.

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Answer:

27 degrees

Step-by-step explanation:

Sum of angles in a triangle is 180 degrees.

x + 40 + 113 = 180

x + 153 = 180

x = 180 - 153

x = 27 degrees

Volume of the Sphere = \(288\pi unit^3\)

Surface area of the sphere = \(144\pi unit^2\)

A sphere is mathematically defined as the set of points that are all at the same distance from a given point but in three-dimensional space.

The distance from the center to the outermost surface is called the radius of the sphere and the line that connects two points on the sphere and is twice the length of the radius is called diameter.

Diameter = 2 x radius

Let r be the radius of the sphere.

Here, r = 6 units

Surface area of the sphere  = \(4\pi r^2\)

Surface area of the sphere = \(4\pi (6)^2\)

Surface area of the sphere = \(144\pi unit^2\)

Volume of the Sphere  = \(\frac{4}{3}\pi r^3\)

Volume of the Sphere = \(\frac{4}{3}\pi (6)^3\)

Volume of the Sphere = \(288\pi unit^3\)

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The complete question is:

What is the surface area of a sphere whose radius is 6 units and what is the volume of the sphere?

Answer:

J=17 N=20 R=15

Step-by-step explanation:

J=Jane

R=Ruby

N=Nora

J=2R-13

N=5+R

J+N+R=52

(2R-13)+(5+R)+R=52

Slove for R and plug into each equation

Answer:

Ruby is 15, Jane is 17 and Nora is 20.

Step-by-step explanation:

Let x represent the age of Ruby.

Jane: 2x - 13

Ruby: x

Nora: x + 5

52 = (x) + (2x - 13) + (x + 5)

52 = x + 2x - 13 + x + 5

52 + 13 - 5 = x + 2x + x

60 = 4x

x = 15

Jane:

2(15) -13

= 17

Nora:

(15) + 5

= 20

Answer:

ur screwed but the answer is 110.88

Step-by-step explanation:

:)

The answer which we get after calculating from the data given is that  Larry has 15 dollars more than Lenny.

Let the amount which Lenny is having be x

then the amount which Larry is having will be (2/5)x

and on combining them it makes $35 .

Which means,  x + 2x/5 = 35

On simplifying this equation we will get ,

(7/5)x= 35   ,

multiplying both the sides by 5/7

x= (5/7)*35 = $25

Therefore , Lenny is having 4 25.

So Larry must be having ,  $(35 - 25) = $10

So , we can conclude that Lenny has more dollars. The difference is of 15 dollars.

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If repeats are forbidden, the provided letters u, v, w, x, y, and z can be used to create 8 lists of length 3, each of which has a w or u in the second entry.

We can apply the inclusion-exclusion concept to resolve this issue.

First, let's determine how many total lists of length three can be created using the provided letters without any limitations. There are six options for the first submission, five for the second (since it must be either w or u), and four for the third (since no characters can be repeated). Thus, there are a total of the following lists:

6 × 5 × 4 = 120

Next, let's count the number of lists of length 3 that do not have a w or u in the second entry. We have 6 choices for the first entry, 4 choices for the second entry (since we can't choose w or u), and 4 choices for the third entry (since we can't repeat any letters). Thus, the total number of such lists is:

6 × 4 × 4 = 96

Similarly, we can tally the number of lists of length 3 lacking a w or u in the first entry as well as the number of lists of length 3 lacking a w or u in either the first or second entry. Which are:

4 × 5 × 4 = 80 (no w or u in first entry)

4 × 4 × 4 = 64 (no w or u in first or second entry)

Finally, we can use the principle of inclusion-exclusion to count the number of lists that have a w or u in the second entry. This is:

120 - 96 - 80 + 64 = 8

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Attitude, beliefs, and knowledge shape a teacher's delivery: attitude affects engagement, beliefs influence instructional decisions, and knowledge enables effective communication and learning facilitation.

Attitude, beliefs, and knowledge play crucial roles in shaping how a teacher delivers a lesson. Here's a detailed explanation of their impacts:

Attitude:

Attitude refers to a teacher's mindset, emotions, and approach towards teaching. A positive attitude fosters enthusiasm, motivation, and a genuine passion for the subject matter. This translates into an engaging and dynamic teaching style, creating an environment conducive to learning. Conversely, a negative attitude can lead to disinterest, lack of enthusiasm, and a disengaged teaching approach, which can hinder students' engagement and comprehension.

Beliefs:

A teacher's beliefs influence their instructional decisions and pedagogical strategies. Beliefs about students' capabilities, learning styles, and the purpose of education can shape the teacher's approach to delivering a lesson. For example, if a teacher believes that all students have the potential to succeed, they may employ differentiated instruction techniques to cater to diverse learning needs. Conversely, if a teacher holds limiting beliefs about students' abilities, they may adopt a one-size-fits-all approach, which may hinder student progress.

Knowledge:

A teacher's knowledge encompasses both subject matter expertise and pedagogical content knowledge. Profound knowledge of the subject allows a teacher to effectively structure and present the lesson, answer student queries, and provide relevant examples. Pedagogical content knowledge helps in selecting appropriate instructional strategies, adapting to student needs, and assessing learning effectively. Without a strong knowledge base, a teacher may struggle to deliver accurate information, engage students, or address misconceptions.

Collectively, attitude, beliefs, and knowledge significantly impact a teacher's delivery of a lesson. A positive attitude enhances student motivation and engagement. Strong beliefs in students' potential and individualized instruction foster a supportive learning environment. Adequate subject knowledge and pedagogical skills enable effective communication and facilitate meaningful learning experiences. By combining these elements, teachers can create an impactful and effective learning environment that nurtures student growth and achievement.

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Answer:

103.5 m²

Step-by-step explanation:

To find the area of a right trapezoid, you can decompose it into a rectangle and a triangle. The sum of the area of  the rectangle and the triangle gives the area of the trapezoid.

For the right trapezoid attached below, the area can be gotten by:

Area of rectangle = length × breadth = 9 × 8 = 72 m²

Area of triangle = 1/2(base × height) = 0.5 × 7 × 9 = 31.5 m²

Area of trapezoid = Area of rectangle + Area of triangle = 72 m² + 31.5 m² = 103.5 m²

Equation

The answer would be d = 46.41

Answer:

The answer is (-1.5,-0.5)

The formula is (x₁ + x₂)/2, (y₁ + y₂)/2, so it would be (-5+2)/2, (2+-3)/2.

(3)/2, (-1)/2 = (1.5,-0.5)

Answer:

0.2 out of 1

Step-by-step explanation:

Lets say you have $100

20% of that is 20

10% of that is 10

Answer:

I think its 5?

Step-by-step explanation:

Im not rlly 100% sure but i think all u have to do is just divide 100 by 20

9514 1404 393

Answer:

  (a) All three pyramids have the same volume

Step-by-step explanation:

The triangular base has an area of ...

  B = 1/2bh . . . . where b is the base of the triangle and h is its height.

The volume of the pyramid is ...

  V = 1/3BH . . . . where B is the area of the base, and H is the height of the pyramid.

Combining these equations gives ...

   V = 1/3(1/2bh)H = 1/6bhH

__

Pyramid 1 volume

  V1 = 1/6(12 m)(2 m)(10 m) = 40 m³

Pyramid 2 volume

  V2 = 1/6(6 m)(4 m)(10 m) = 40 m³

Pyramid 3 volume

  V3 = 1/6(12 m)(4 m)(5 m) = 40 m³

All three pyramids have the same volume.

Answer:

The answer is y=-x+4 and y=-3x+2

Step-by-step explanation:

Answer:

y = x + 4 and y = 3x + 2

Step-by-step explanation:

Both of the lines slopes are positive, and for the equation of y = 3x + 2, the slope is 3 rather than \(\frac{1}{3}\) because it goes up 3 then to the right 1 rather than up 1 and to the right 3.