help me with this bc

Help Me With This Bc

Answers

Answer 1

Answer:

Slope-intercept form = y=3x-11

Step-by-step explanation:

Two points on the line:

(4, 1)

(3, -2)

Hope I helped!


Related Questions

for the function f(x)=-2x^5+3x^3, find the value of f(3) and f(-2)

Answers

As a result, the function \(f(x)=-2x^5+3x^3\) has values of 405 for f(3) and 88 for f(-2) when x is substituted for 3 and 2, respectively.

What does function mean?

Statistics and their variations, equations but also associated structures, shapes as well as their locations and potential locations, are all topics covered in algebra. The interaction between a collection of inputs, each of which has an associated output, is referred to as a "function." An relationship between inputs and outputs, where each input yields a single, distinct outcome, is called a function. For each function, a region and a minimal area, or scope, are designated. The letter f is frequently used to represent functions (x). X is the input. The four basic kinds of functions that are offered are on actions, one-to-one operations, many-to-one functions, within functions, and on functions.

given

\(f(x)=-2x^5+3x^3f(3) = -2(3)^5 + 3(3)^3\)

= -486 + 81

= 405

ii)\(f(x)=-2x^5+3x^3f(-2) = -2(-2)^5 + 3(-2)^3\)

= -64 - 24

= - 88

As a result, the function \(f(x)=-2x^5+3x^3\)has values of 405 for f(3) and 88 for f(-2) when x is substituted for 3 and 2, respectively.

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Thank you so much!!!

Thank you so much!!!

Answers

Answer:

\(\fbox{\begin{minipage}{16em}Option D: y = (4/7)x + 8 is correct\end{minipage}}\)

Step-by-step explanation:

(1) A typical form of equation of a line is:

\(y = Mx + b\)

with, \(M\) is slope and \(b\) is y-intercept.

(2) Another straight line has equation in form of:

\(y = Nx + c\)

with \(N\) is slope and \(c\) is y-intercept

(3) If these two lines are perpendicular, according to the property of two perpendicular lines on the two-dimensional plane, we have:

\(M\) x \(N\) = -1

(4) Transform the given equation of original line into typical form:

      \(7x + 4y = -24\\\)

<=> \(4y = -7x - 24\)

<=>  \(y = (\frac{-7}{4})x - \frac{24}{4}\)

<=> \(y = (\frac{-7}{4})x - 6\)

=> \(M = \frac{-7}{4}\)

=> \(N = \frac{-1}{M} = \frac{-1}{\frac{-7}{4} } = \frac{-4}{-7} = \frac{4}{7}\)

=> Option D: \(y = (\frac{4}{7})x + 8\) is correct (Slope = \(\frac{4}{7}\))

Hope this helps!

:)

Consider the following vector field.
F(x, y, z) =
9ex sin(y), 2ey sin(z), 8ez
sin(x)
(a)
Find the curl of the vector field.
curl(F) =
(b)
Find the divergence of the vector field.
div(F) =

Answers

The curl of the vector field

curl(F) = -2ey cos(z)i + 8ez cos(x)j - 9ex cos(y)k

The divergence of the vector field

div(F) = 9e^x sin(y) + 2e^y sin(z) + 8e^z

To find the curl of the vector field F(x, y, z) = 9ex sin(y), 2ey sin(z), 8ez sin(x), we need to compute the determinant of the curl matrix.

(a) Curl of F:

The curl of a vector field F = P(x, y, z)i + Q(x, y, z)j + R(x, y, z)k is given by the following formula:

curl(F) = (∂R/∂y - ∂Q/∂z)i + (∂P/∂z - ∂R/∂x)j + (∂Q/∂x - ∂P/∂y)k

In this case, we have:

P(x, y, z) = 9ex sin(y)

Q(x, y, z) = 2ey sin(z)

R(x, y, z) = 8ez sin(x)

Taking the partial derivatives, we get:

∂P/∂y = 9ex cos(y)

∂Q/∂z = 2ey cos(z)

∂R/∂x = 8ez cos(x)

∂R/∂y = 0 (no y-dependence in R)

∂Q/∂x = 0 (no x-dependence in Q)

∂P/∂z = 0 (no z-dependence in P)

Substituting these values into the curl formula, we have:

curl(F) = (0 - 2ey cos(z))i + (8ez cos(x) - 0)j + (0 - 9ex cos(y))k

= -2ey cos(z)i + 8ez cos(x)j - 9ex cos(y)k

Therefore, the curl of the vector field F is given by:

curl(F) = -2ey cos(z)i + 8ez cos(x)j - 9ex cos(y)k

(b) Divergence of F:

The divergence of a vector field F = P(x, y, z)i + Q(x, y, z)j + R(x, y, z)k is given by the following formula:

div(F) = ∂P/∂x + ∂Q/∂y + ∂R/∂z

In this case, we have:

∂P/∂x = 9e^x sin(y)

∂Q/∂y = 2e^y sin(z)

∂R/∂z = 8e^z

Substituting these values into the divergence formula, we have:

div(F) = 9e^x sin(y) + 2e^y sin(z) + 8e^z

Therefore, the divergence of the vector field F is given by:

div(F) = 9e^x sin(y) + 2e^y sin(z) + 8e^z

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A Spanish club is electing a president, vice president, and secretary. The club has 9 members who are eligible for these offices. How many different ways can the 3 offices be filled?

Answers

As per the combination method, there are 84 different ways to fill the three offices from a group of nine eligible members.

A combination is a way of selecting objects from a larger set without regard to the order in which they are selected. In other words, combinations are a way of counting how many different groups can be formed from a set of objects, where the order of the objects in the group does not matter.

In our case, n = 9 (the number of eligible members) and r = 3 (the number of offices to be filled). So we can plug these values into the formula and get:

⁹C₃ = 9! / 3!(9-3)! = (9 × 8 × 7) / (3 × 2 × 1) = 84

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help? 2+2-8+6-2+9+5-6+6-3+8-1+7-0+8-1+10-2+11+

Answers

Answer:

51

Step-by-step explanation:

2+2 = 4

4 - 8 = -4

-4 + 6 = 2

2 - 2 = 0

0 + 9 = 9

9 + 5 = 14

14 - 6 = 8

8 + 6 = 14

14 - 3 = 11

11 + 8 = 19

19 - 1 = 18

18 + 7 = 25

25 - 0 = 25

25 + 8 = 33

33 - 1 = 32

32 + 10 = 42

42 - 2 = 40

40 + 11 = 51

hich of the following are most likely to be dependent samples? multiple choice a study that compares the mean wait times at two different hospital emergency rooms a study that compares the salaries earned by men and women in the same job position a study that compares the weight gain for puppies who eat two different brands of food a study that compares standardized test scores before and after a course is taken

Answers

The statement which most likely represent "dependent-samples" is (d) study which compares standardized "test-scores" before and after course is taken.

The scores obtained before and after are linked, as they are obtained from the same group of individuals, and are therefore dependent samples.

For example, suppose a group of students is given a standardized test before and after taking a preparation course.

The scores obtained before the course are likely to be related to the scores obtained after the course, as they are both measures of the same group of students.

If the course has a significant impact on the scores, the before-and-after scores will likely be correlated, and the samples will be dependent.

Therefore, the correct option is (d).

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The given question is incomplete, the complete question is

Which of the following are most likely to be dependent samples?

(a) A study that compares the mean wait times at two different hospital emergency rooms

(b) A study that compares the salaries earned by men and women in the same job position

(c) A study that compares the weight gain for puppies who eat two different brands of food

(d) A study that compares standardized test scores before and after a course is taken.

Which angle bisector was constructed incorrectly? Explain the step that was completed incorrectly

Answers

The angle bisector that was constructed incorrectly is Example fiqure  2 , this was a result of not dividing the angle into equal parts.

What is a angle bisector?

An angle bisector can be described as a line which is used in dividing a  a given angle usually into  two equal degrees.

It should be noted that the the bisector in the second example was incorrectly constructed as a result of the  bisector not dividing <ABC into two equal parts it doe not matter if it passes intersection of the arcs and point B.

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Which angle bisector was constructed incorrectly? Explain the step that was completed incorrectly
Which angle bisector was constructed incorrectly? Explain the step that was completed incorrectly

given that it serves all of these functions, the questionnaire is at the center of the research process with the quality of the analysis directly affecting the quality of the data collected. true false

Answers

The questionnaire is indeed at the center of the research process, and the quality of the analysis directly affects the quality of the data collected. Therefore, the statement is true.

Here's a step-by-step explanation:

1. A questionnaire is a research instrument used to collect data from participants in a study. It typically consists of a series of questions that are designed to gather specific information.

2. The questionnaire plays a central role in the research process because it serves multiple functions. These include:
  - Collecting data: The questionnaire is used to gather information from participants, which can be in the form of responses to closed-ended questions (e.g., multiple-choice) or open-ended questions (e.g., essay-style answers).
  - Standardizing data collection: By using a questionnaire, researchers can ensure that all participants are asked the same questions in the same order. This helps to minimize bias and increase the reliability of the data collected.  
  - Obtaining quantitative and qualitative data: Depending on the design of the questionnaire, researchers can collect both quantitative data (numerical measurements or ratings) and qualitative data (descriptive or explanatory responses). This allows for a comprehensive analysis of the research topic.
  - Testing hypotheses: Researchers can include specific questions in the questionnaire to test hypotheses or explore relationships between variables. This helps to address the research objectives and answer the research questions.
 
3. The quality of the analysis directly affects the quality of the data collected. After the data is collected through the questionnaire, it needs to be analyzed to draw meaningful conclusions. If the analysis is not done properly, it can lead to incorrect or unreliable results. For example, if the researcher makes mistakes in data entry or fails to use appropriate statistical techniques, it can affect the accuracy and validity of the findings.

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Solve for X.

log4 1/64 = x

Answers

Answer:

Step-by-step explanation:

0.00940718736

Definition of a logarithm:

log a = x ——>b^x=a
b

So, by this definition, b=base, a=product, and x=exponent. Therefore, you can remember: a logarithm IS an exponent or log=EXP. This should make sense because a logarithm solves for an exponent given the base and product, which makes it the inverse operation of exponent. The definition at the top can be translated between logarithms and the equivalent exponential form.

Let’s solve the equation now using these concepts:

log (1/64) = x
4

Let’s convert into exponential form. We will do this to see the logarithm work as an exponential equation, and we are able to do this because they are equivalent forms.

log (1/64) = x ————> 4^x=1/64
4


So, we are actually looking for an exponent with a base of 4 that produces 1/64. Notice that 1/64 is less than 1, and the only way to obtain a product of less than 1 with exponents is to use negative exponents. Remember, positive exponents are how many times the base multiplies itself; this concept applies to negative exponents, but a negative exponent causes the base to be reciprocated.

We know that 4³=64, so how does 64 become 1/64? Well, an exponent of -3 caused this to occur. This is because 4^-3=1/4³=1/64. Remember, negative exponents must be moved to the denominator or numerator to make the power positive; every rational number can be made into a fraction by dividing by 1 because it doesn’t change the value of the number.

Thus, x must be -3. Let’s check:

x=-3

4^-3=1/64

1/4³=1/64

1/64=1/64

So, x=-3 is the answer.

Find z, the total impedance, of each circuit. Express your answer in standard form

Find z, the total impedance, of each circuit. Express your answer in standard form

Answers

Answer:

a. 7 Ω

b. 5 Ω

c. 4.472 Ω

Step-by-step explanation:

a. Since we have two resistors in with resistances R = 4Ω and R' = 3 Ω in series, the total impedance z of the circuit is the sum of the individual resistances.

So, z = R + R' = 4 Ω + 3Ω = 7 Ω

b. Since we have a resistor of resistance R = 4Ω in series with an inductor of reactance X = 3 Ω, the total impedance is z = √(R² + X²)

z = √((4 Ω)² + (3 Ω)²)

z = √(16 Ω² + 9 Ω²)

z = √(25 Ω²)

z = 5 Ω

c. Since we have a resistor of resistance R = 4Ω in series with an inductor of reactance X = 3 Ω, and a capacitor of reactance, X' = 1 Ω the total impedance is z = √[R² + (X - X')²]

z = √((4 Ω)² + (3 Ω - 1 Ω)²)

z = √(16 Ω² + (2 Ω)²)

z = √(16 Ω² + 4 Ω²)

z = √(20 Ω²)

z = √(4 × 5) Ω

z = √4 × √5 Ω

z = 2√5 Ω

z = 4.472 Ω

Which number(s) below belong to the solution set of the inequality? Check all that apply. 11x > 132​

Which number(s) below belong to the solution set of the inequality? Check all that apply. 11x &gt; 132

Answers

Answer:

a

c

Step-by-step explanation:

Note that

> means greater than

< means less than

≥ means greater than or equal to  

≤ less than or equal to  

11x ≥ 132

divide both sides of the equation by 11

x ≥ 12

this means that the value of x is greater or equal to 12

In the option, the values that fit this condition are 12 and 26

What is the probability that a family of two children has (a) two boys given that it has at least one boy

Answers

The probability that a family of two children has two boys given that it has at least one boy is 1/3.

To calculate the probability that a family of two children has two boys given that it has at least one boy, we can use conditional probability.

Let's consider the possible outcomes when a family has two children:

BB (both boys)

BG (one boy and one girl)

GB (one girl and one boy)

GG (both girls)

We are given that the family has at least one boy, which means we can disregard the outcome GG (both girls) because it doesn't meet the given condition.

Therefore, out of the three remaining outcomes (BB, BG, GB), only one outcome satisfies the condition of having two boys (BB).

The probability of having two boys given that the family has at least one boy is:

P(Two boys | At least one boy) = P(BB) / (P(BG) + P(GB) + P(BB))

Since each child's gender is independent and has a 1/2 probability of being a boy or a girl, we can calculate the probabilities as follows:

P(BB) = 1/2 * 1/2 = 1/4

P(BG) = 1/2 * 1/2 = 1/4

P(GB) = 1/2 * 1/2 = 1/4

Substituting these values into the formula:

P(Two boys | At least one boy) = (1/4) / (1/4 + 1/4 + 1/4) = 1/3

Therefore, the probability that a family of two children has two boys given that it has at least one boy is 1/3.

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What is the y intercept of the line that has a slope of 4 and goes through the point (-3,12)?

A) 0
B) -12
C) 24
D) 12

Answers

Answer: 0
Hope this helps :)
What is the y intercept of the line that has a slope of 4 and goes through the point (-3,12)?A) 0B) -12C)

could u help me with this partial differentiation question please

could u help me with this partial differentiation question please

Answers

Solution

Step 1:

Write the function

\(f(x,\text{ y\rparen = }\frac{abc}{x-y^2}\text{ - }\frac{ab^2}{x^2}\)

Step 2:

which inequality represents the situation described below

Answers

Show the picture or something

1/2 of a bag of mangoes is to be shared among 6 girls, what fraction of the bag will each girl get?

Answers

Answer:

1/12

Step-by-step explanation:

So lets think of it like this:

The thing being distrubuted is 1/2.

Each of the 6 girls gets a piece of 1/2 equally.

So each girl gets 1/6 of the 1/2.

This can be though of as 1/2*1/6

To find the answer to this multipication problem, multiply the numerator by the numerator, and denominator by the denominator:

1*1

=

1

This is your new numerator.

2*6

=

12

This is your new denominator.

So combine the numerator and denominator:

1/12

This is the fraction of the bag each girl get!

Hope this helps!

Answer:

1/12

Step-by-step explanation:

1/2 ÷ 6 which is 1/2 × 1/6 so 1/12

Jessica earns $800 each month working a part-time job. She wants to save a total of $2,400 for college over a one-year period. What percentage of Jessica's total monthly budget should go to her college savings to meet her goal?

Answers

Answer:

25% should go

Step-by-step explanation:

If she wants to save $2,400;

Then in a month, she should save 2400/12 = 200

So now we need the amount of her monthly earnings will this savings be

That will be;

200/800 * 100%

= 1/4 * 100% = 25%

Need help on this question as well

Need help on this question as well

Answers

The required arc length of sector VW is 8\(\pi\).

Given that, in a circle U, radius  UV = 9 and  central angle of sector m∠VUW = 160°.

To find the arc length of sector VW, we can use the formula:

Arc length = (central angle / 360) x circumference of the circle.

First,  find the circumference of the circle by the  formula for the circumference of a circle is given by:

Circumference = 2 x \(\pi\) x radius.

Circumference = 2 x \(\pi\) x 9 = 18π.

Now, let's find the arc length of sector VW using the central angle of 160 degrees:

Arc length = (160/360) x 18π

Arc length = (4/9) * 18\(\pi\) = 8\(\pi\).

Therefore, the arc length of sector VW is 8\(\pi\).

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Attorneys can now submit documents electronically in many courts; the standard format in U.S. federal courts is ____.

Answers

The standard format for electronic document submission in U.S. federal courts is PDF (Portable Document Format).

PDF, or Portable Document Format, is a widely used file format that allows for the electronic representation of documents. It is designed to be platform-independent, meaning it can be viewed and accessed on different devices and operating systems while retaining its original formatting. In the context of U.S. federal courts, PDF has become the standard format for attorneys to submit documents electronically.

The adoption of PDF as the standard format for electronic document submission in U.S. federal courts brings several advantages. PDF files are generally compact in size, making them easier to transmit and store. They also preserve the interest, fonts, and graphics of the original document, ensuring that the submitted materials are accurately represented.

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Why is math considered to have a sequential learning pattern?.

Answers

Math is considered to have a sequential learning pattern because concepts and skills are introduced in a specific order, building upon previously learned material.

In math, concepts and skills are typically organized in a sequential manner, where each new topic builds upon what has been previously learned. This sequential learning pattern allows students to develop a solid foundation and gradually progress to more advanced topics.

For example, in elementary school, students first learn basic arithmetic operations like addition and subtraction before moving on to multiplication and division. These foundational skills are essential for understanding more complex mathematical concepts later on, such as algebra, geometry, and calculus. By following a sequential learning pattern, students can gradually develop their mathematical understanding and problem-solving abilities. They are able to connect new concepts to what they have already learned, reinforcing their knowledge and enabling them to apply it in different contexts. This sequential approach also ensures that students have the necessary prerequisite knowledge and skills to comprehend more advanced mathematical concepts. It helps create a logical progression in mathematical education, allowing students to build upon their previous knowledge and continually expand their mathematical abilities.

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Please help me with this and also remember your answer has to be step by step

The two figures above are congruent. Find the measure of the angle that isn't labeled on either figure.

Please help me with this and also remember your answer has to be step by step The two figures above are

Answers

The measure of the angle that isn't labeled are:

∠B = 100

∠K = 100

∠L = 41

∠M = 86

What are corresponding angles?

The angles that are in the same position on two parallel lines intersected by a transversal line on the parallel lines.

Corresponding angles are equal.

We have,

Two congruent figures.

Each figure's total sum of the angles must be 360.

The figures are congruent so the corresponding angles must be equal.

From the first figure we get,

∠A = 133 ( Corresponding angles )

∠A + ∠B + ∠C + ∠D = 360

133 + ∠B + 41 + 86 = 360

∠B = 360 - 260

∠B = 100

Now,

∠k = ∠B = 100

∠L = ∠C = 41

∠M = ∠D = 86

Thus,

The measure of the angle that isn't labeled are:

∠B = 100

∠K = 100

∠L = 41

∠M = 86

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what is (-7+3i)/(-6-6i) show in steps

Answers

The steps for the final expression.

Step 1: (-7 + 3i) / (-6 - 6i)

Step 2: (-7 + 3i)x(-6 + 6i) / (-6 - 6i)x(-6 + 6i)

Step 3: (42 - 42i - 18i - 18) / (36 + 36)

Step 4: (24 - 60i)/72

Step 5: 24/72 - (60/72)i

Step 6: 1/3 - (5/6)i

What is an expression?

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

Example: 2 + 3x + 4y = 7 is an expression.

We have,

(-7 + 3i) / (-6 - 6i)

Rationalize the denominator.

= (-7 + 3i) / (-6 - 6i) x (-6 + 6i) / (-6 + 6i)

= (42 - 42i - 18i - 18) / (36 + 36)

= (24 - 60i) / 72

= 24/72 - (60/72)i

= 1/3 - (5/6)i

Thus,

The final expression is 1/3 - (5/6)i

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What is the surface area of this figure?

Thanks in advance!

What is the surface area of this figure?Thanks in advance!

Answers

Answer:

24 cm ²  B.

Step-by-step explanation:

if the triangle is a right triangle he I know it

do 4*3=12 the /2 so 6

8-4=4  4*1.5=6  

3*4=12

12+6+6

24 I think

The endpoints of GH are G(3,3) and H(-7,7).
Find the coordinates of the midpoint M.

Answers

Step-by-step explanation:

Hey there!!

You can simply use midpoint formulae to find midpoint of the coordinates.

Here, Given that;

G(3,3) and H(-7,7).

Using midpoint formulae,

\(midpoint \: of \: gh = (\frac{x1 + x2}{2} ,\frac{y1 + y2}{2} \))

\(midpoint \: of \: gh = (\frac{3 - 7}{2} ,\frac{3 + 7}{2} \))

After simplifying it we get,

= (-2,5).

Therefore, midpoint of GH is M(-2,5).

Hope it helps....

A line is parallel to y = 2x – 8 and
intersects the point (-4, -1). What is the
equation of this parallel line?
y = [?]x + [ ]
Hint: Use the Point-Slope Form: y - y1 = m(x - X1)
Then write the equation in slope-intercept form.

A line is parallel to y = 2x 8 andintersects the point (-4, -1). What is theequation of this parallel

Answers

Answer:

y=2x+7

Step-by-step explanation:

When an equation is parallel to another, it shares the same slope.

Our original line is y=2x-8, and it is in slope-intercept form (y=mx+b)

This means that our slope is 2 because m represents the slope.

The slope of our parallel line will then also be 2.

We can begin to plug that into point-slope form which is:

y - y1 = m(x - x1)

This is where (x1, y1) is a point the line intersects, and m is the slope.

Plugging in the slope, we'll have:

y - y1 = 2(x - x1)

We also know it intersects the point (-4, -1)

We can plug this into our equation as well.

y - (-1) = m(x - (-4))

y+1=2(x+4)

Now, we can simplify it into slope-intercept form:

y+1=2(x+4)

Distribute

y+1=2x+8

Subtract 1 from both sides

y=2x+8-1

y=2x+7

Answer:

y = 2x + 7

Step-by-step explanation:

y - y1 = m(x - x1)

First, put y and x into the equation and enter the slope, which is 2.

y + 1 = 2(x + 4)

(The negative 1 and 4 are changed to a positive 1 and 4 since the two negative signs cancel each other out)

Next, distribute.

y + 1 = 2x + 8

Then, you move the 1 to the other side of the equation to isolate the y. This will change the 1's sign into a negative and you will result with this after adding like terms:

y = 2x + 7

The equation of the line parallel to y = 2x - 8, and that goes through the point (-4, -1) is y = 2x + 7

Twenty children were surveyed about the number of hours they play outside in 1 week. The results are shown below.

6, 5, 4, 3, 0, 7, 1, 5, 4, 4, 3, 2, 2, 3, 2, 4, 3, 4, 0, 7

Complete and upload the frequency table below and create a histogram to display this data. Make sure there is only 4 intervals.

Twenty children were surveyed about the number of hours they play outside in 1 week. The results are

Answers

The data can be shown in the frequency table with only 4 intervals and the histogram is shown in the picture.

What is a histogram?

It is defined as the depiction of numerical data in a graph using a bar with no space. The histogram depicts the approximate distribution of the data.

We have data:

6, 5, 4, 3, 0, 7, 1, 5, 4, 4, 3, 2, 2, 3, 2, 4, 3, 4, 0, 7

Intervals   Frequency

 0 - 3     6

 3 - 6     11

 6 - 9     3

 9 - 12     0

The histogram is shown in the attached picture.

Thus, the data can be shown in the frequency table with only 4 intervals and the histogram is shown in the picture.

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Twenty children were surveyed about the number of hours they play outside in 1 week. The results are

select the subset(s) that are subspaces. the set of all vectors in of the form where are real numbers all polynomials in that have a non-zero term. the set of all matrices of the form where . the set of all vectors in whose endpoint lies on the line .

Answers

Subsets 1 and 3 are subspaces, while subsets 2 and 4 are not.

How to determine which subsets are subspaces?

To determine which subsets are subspaces, we need to check if they satisfy the three conditions of being a subspace:

closure under addition, closure under scalar multiplication, and containing the zero vector. Let's evaluate each subset:

The set of all vectors in ℝ³ of the form (a, b, c) where a, b, c are real numbers:

  This subset is a subspace. It satisfies closure under addition, closure under scalar multiplication, and contains the zero vector (0, 0, 0). Therefore, it is a subspace of ℝ³.

The set of all polynomials in ℝ[x] that have a non-zero term:

  This subset is not a subspace. While it satisfies closure under addition, it fails to satisfy closure under scalar multiplication. If we multiply a polynomial with a non-zero term by zero, the result will not have a non-zero term. Therefore, it does not contain the zero vector, violating the subspace condition.

The set of all matrices of the form [a, b; c, d] where a, b, c, d are real numbers:

  This subset is a subspace. It satisfies closure under addition, closure under scalar multiplication, and contains the zero matrix [0, 0; 0, 0]. Hence, it is a subspace of the space of 2x2 matrices.

The set of all vectors in ℝ² whose endpoint lies on the line y = 2x:

  This subset is not a subspace. It fails to satisfy closure under scalar multiplication.

If we scale a vector whose endpoint lies on the line y = 2x by a non-zero scalar, the endpoint will no longer lie on the line y = 2x.

Thus, it does not contain the zero vector, violating the subspace condition.

Learn more about subsets and subspaces

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I need help please help

I need help please help

Answers

Answer:

Im not sure

Step-by-step explanation:

1. The floor of a building is 120 feet long
and 80 feet wide. A scale model of the
building has a length of 24 inches. What
is the width of the model?

Answers

Step-by-step explanation:

120 ft relate to 24 inches.

120/80 must be the same ratio as 24/model width.

120/80 = 3/2

so,

24/width = 3/2

48/width = 3

48 = 3width

width = 48/3 = 16 inches


Brett needed to repair a window that sat 12 feet
high on a house. He has a 15 foot ladder. How far away
must he set the ladder from the base of the house for it
to reach the window exactly?
3 ft
65 ft
© 9 ft D 6 ft

Answers

9 feet

Use Pythagorean theorem:
Leg: 12
Hypotenuse: 15

12^2 + x^2 = 15^2
144 + x^2 = 225
x^2 = 81
x = 9
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