¿Cuál es la suma de la medida de los ángulos interiores de un decágono?​

Answer:

Step-by-step explanation:

So Reena has ran a distance of 5 kilometers while only covering one-sixth of the distance.

In its most basic form, an equation is a mathematical statement that indicates that two mathematical expressions are equal. 3x + 5 = 14, for example, is an equation in which 3x + 5 and 14 are two expressions separated by a 'equal' sign. A mathematical phrase with two equal sides separated by an equal sign is called an equation. An example of an equation is 4 + 6 = 10.

Here,

If Reena has completed one sixth of the 30 km run,

30 km / 6 = 5 km.

So, Reena has run a distance of 5 km so far when she had run one sixth of the distance.

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Answer:

four minus three

Step-by-step explanation:

your welcome

c is a constant of the function y = ax² + bx + c is -3

An equation is an expression that shows the relationship between two or more numbers and variables.

Given that:

y = ax² + bx + c

At point (5, 32)

32 = a(5²) + 5b + c   (1)

At point (6,45)

45 = a(6²) + 6b + c   (2)

At point (4, 21)

21 = a(4²) + 4b + c   (3)

Hence:

a = 1, b = 2 and c = -3

The value of c which is a constant of the function y = ax² + bx + c, is -3.

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Answer:

slope: 6/7

y intercept : (0, -6)

Step-by-step explanation:

Answer:

0.64 is a decimal and 64/100 or 64% is the percentage for 64/100.

Step-by-step explanation:

Answer:

64/100 = 0.64

Step-by-step explanation:

64/100=0.64

(i don't know how to explain it)

Step-by-step explanation:

4x=44

x=11

6x+4= 6*11+4= 70

Answer:

6x+4=70

Step-by-step explanation:

To solve this, first, we need to know what x is. To do this, we need to solve the equation:

4x-9=35

The first step to solving this is to add nine to both sides, since we need to do the inverse of subtraction to get our answer.

4x-9+9=35+9

4x=44

Now, do the inverse of multiplying by four, which is dividing by four, to both sides.

4/4x=44/4

x=11

Now that we know what x is, we can find the value of 6x+4. Simply plug in 11 for x.

6(11)+4

66+4

70

Our answer is 70.

The matrix of a quadratic form is always a symmetric matrix.A quadratic form is a mathematical expression that consists of variables raised to the power of two, multiplied by coefficients, and added together.

It can be represented in matrix form as Q(x) = x^T A x, where x is a vector of variables and A is the matrix of coefficients. The matrix A is known as the matrix of the quadratic form.

To show that the matrix of a quadratic form is symmetric, let's consider the expression Q(x) = x^T A x. Using the properties of matrix transpose, we can rewrite this expression as Q(x) = (x^T A^T) x. Since the transpose of a matrix A is denoted as A^T, we can see that A^T is the same as A, as A is already a matrix.

Therefore, we have Q(x) = x^T A x = x^T A^T x. This implies that the matrix of the quadratic form A is symmetric, as A^T = A. In other words, the elements of the matrix A are symmetric with respect to the main diagonal. This property holds true for any quadratic form, regardless of its coefficients or variables, making the matrix of a quadratic form symmetric.

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Studying: Use resources.

If your studying for a test, use some resources, like quizizz, quizlet, flashcards, or the internet. If you do, ask your parents for help. Think it like its your big test, and your studying a lot. If you study and try, you'll pass the test on data management. If you need it, ask your teacher for tutoring or practice some data management questions. Studying will help you not to fail a test.

Now, we'll talk about before the test.

Before test: Rest, eat breakfast, and stay calm.

Step-by-step explanation: Going to bed before a test can prevent you from going to sleep. For example, GMAS (for me) is coming soon, and my teacher encourage us to rest, eat breakfast and stay calm. A recommended time for you to go to bed is 8:00-9:30.

Now, about breakfast.

Eating breakfast is also important because you can perform better, in fact, scientists say that if students eat breakfast before a test or exam, they will perform better! Whatever you do, don't skip breakfast. If you do, you won't perform good, and theirs a chance you could fail.

Now, staying calm is the big one.

If your freaking out, stay calm, say a prayer and get your work done! Staying calm is the big one because most students (I am one of them) get worried if they're gonna fail. Keep this in mind: Try. Your. Best. If you don't try, you won't achieve anything. And please don't cheat. If you cheat, you'll have to repeat the whole grade. Can't cheat in college; you'll get kicked out.

During test: DO. NOT. CHEAT.

CHEATING WILL GET YOU KICKED OUT OF COLLEGE AND YOU'LL AUTOMATICALLY FAIL!!! If your computer prevents you from going to other sites, that is good, but don't pull out ANY study guides or notes during your test, unless it's open-notes. If you don't know a questions, skip it and go to the next one. Then go back, it will come to mind later. If your done with your test early, check your answers. Look back and think, "Is this correct?"

Hope you do good on your test!

~ Lily, from Brainly.

Answer:

The y-intercept occurs when x = 0, so you can see it is the point: (0, 11).Step-by-step explanation:

Answer:

Step-by-step explanation:

x-2=0

x=2

f(2)=2³-2(2)²+2(2)+3=8-8+4+3=7≠0

so x-2 is not a factor of f(x).

Answer:

Explanation:

Here, we want to solve the given inequality

We proceed as follows:

Answer:

  (x, y) = (-2, -1) or (1, 2)

Step-by-step explanation:

You want to find the algebraic solutions to the system of equations ...

The x-value of the solutions will be the solutions to ...

  f(x) = g(x)

  f(x) -g(x) = 0

  (x² +2x -1) -(x +1) = 0 . . . . substitute for f(x) and g(x)

  x² +x -2 = 0 . . . . . . . . . simplify

  (x +2)(x -1) = 0 . . . . . factor

The zero product rule says the solutions will be values of x that make one or the other of the factors zero.

  x = -2 or +1 . . . . . . . values that make the factors zero

  y = x +1 = -1 or +2 . . . . from the equation for g(x)

Solutions are (x, y) = (-2, -1) or (1, 2).

We already know that g(x) is satisfied by these x- and y-values.

  f(x) = x² +2x -1 = (x +2)x -1

  f(-2) = (-2 +2)(-2) -1 = 0 -1 = -1 . . . . . (-2, -1) is a solution

  f(1) = (1 +2)(1) -1 = 3 -1 = 2 . . . . . . . . . (1, 2) is a solution

These values agree with the above, so we have shown the solutions satisfy both equations in the system of equations.

Answer:

slope = 3.5

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 )

y = 2 + 3.5x OR y = 3.5x + 2 ← is in slope- intercept form

with slope m = 3.5

Answer: 2.2 and 0.4

Step-by-step explanation:

Answer:

they are corresponding angles, x=7

Step-by-step explanation:

75=11x-2

77=11x

x=7

Answer:

A IS THE ANSWER

Step-by-step explanation:

I USED DESMOS APP try it really helps

The vertices of the feasible region of the inequality is given by 2x + 3y > 12 and 5x + 2y ≥ 15

Inequalities are the mathematical expressions in which both sides are not equal. In inequality, unlike in equations, we compare two values. The equal sign in between is replaced by less than (or less than or equal to), greater than (or greater than or equal to), or not equal to sign.

In an inequality, the two expressions are not necessarily equal which is indicated by the symbols: >, <, ≤ or ≥.

Given data ,

Let the inequality equation be represented as A

Now , the value of A is

Substituting the values in the equation , we get

2x + 3y > 12   be equation (1)

5x + 2y ≥ 15   be equation (2)

where x , y ≥ 0

Now , the inequalities are plotted on the graph ,

where the vertices of the feasible region is given by A , B and C

A ( 0 , 4 ) , B ( 21/11 , 30/11 ) , C ( 3 , 0 )

Hence , the inequalities are solved and the graph is plotted

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Answer:

x<=-7

Step-by-step explanation:

Answer:

x≥7

Step-by-step explanation:

Answer:

Yes

Step-by-step explanation:

y is the litters of water in the tank

x is the time in minutes

m is the change in litters

b is the initial amount of water

so the formula is y = mx + b

whereas m is -14 and b is 770

y = -14x + 770 or y = 770 - 14x

Answer:

a: The experimental probability that Mrs Patel will have to stop at this set of lights tomorrow is 32/50 = 0.64.

b: The experimental probability that she will not have to stop at the lights next Wednesday is 1 - 0.64 = 0.36.

Step-by-step explanation:

The probabilities of an event occurring based on the outcomes of an experiment is known as the experimental probability.

The experiment in this scenario involves Mrs. Patel driving herself to work every day. She stopped 32 times at this set of traffic signals during the course of the experiment's 50 working days. The experimental likelihood that she will have to stop at this set of lights tomorrow is 0.64 based on these findings.

The experimental probability is usually more accurate than the theoretical probability because it is based on actual data. However, the experimental probability can be affected by chance.

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Answer:

y = (x - 2)² - 5

Step-by-step explanation:

y = x² - 4x - 1

using the method of completing the square

add/subtract ( half the coefficient of the x- term)² to x² - 4x

y = x² + 2(- 2)x + 4 - 4 - 1

y = (x - 2)² - 5 ← in vertex form

Answer:

BCA

Step-by-step explanation:

We can use the slope equation to help us do this:

\(m=\dfrac{y_2-y_1}{x_2-x_1}\)

⇒ First, pick two clear points that falls on the given graph:

(0,2), (4,-3)

⇒ Plug these into the equation and solve:

\(m=\dfrac{y_2-y_1}{x_2-x_1}\\\\m=\dfrac{-3-2}{4-0}\\\\m=\dfrac{-5}{4}\)

B) -5/4

(a) False. The radial probability function does not represent the positions of individual electrons, but rather the probability of finding an electron at a particular distance from the nucleus. (b) False. The radial probability function and probability density do not go to zero at the same distance. (c) True. For an ns orbital, the number of radial nodes is equal to the principal quantum number.

(a) The radial probability function represents the probability of finding an electron at a specific distance from the nucleus. It does not indicate the positions of individual electrons. The function may have maxima or peaks at certain distances, but it does not imply that each electron is located at those specific distances. Therefore, the statement is false.

(b) The radial probability function and probability density are related but represent different aspects. The radial probability function describes the probability of finding an electron at a particular distance, while the probability density represents the probability of finding an electron within a small volume around a point in space. They do not go to zero at the same distance from the nucleus. The radial probability function typically goes to zero at larger distances, while the probability density decreases but does not necessarily reach zero at the same distance. Therefore, the statement is false.

(c) The number of radial nodes in an orbital is indeed equal to the principal quantum number (n). For an ns orbital, where the angular momentum quantum number (l) is 0, the number of radial nodes is equal to n - 1. This means that an ns orbital with a principal quantum number of 2 (n = 2) will have one radial node. So the statement is true.

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Answer:

(1, 3 )

Step-by-step explanation:

To find a solution choose a value for x, substitute into the equation and solve for y.

let x = 1 , then

- 7(1) + 3y = 2 , that is

- 7 + 3y = 2 ( add 7 to both sides )

3y = 9 ( divide both sides by 3 )

y = 3

One possible solution is therefore (1, 3 )

Answer:

Step-by-step explanation:

1 3

Answer:

f(x)=5⋅2.5^x

Step-by-step explanation:

Simple really, all you have to do is plug it in.

5·2.5 ^(-1)

Once you plug it in, solve it! This part you can do on a calculator, or you could always solve it out.  

The answer is 2. So that one was correct because 5⋅2.5^(-1) = 2 like the graph says, -1x = 2y. You still have to make sure that it is correct all the way through. So, just plug in the x value in the (x) spot.

The x values are:

-1, 0, 1, 2, and 3

The y values (which are the answers) are:

2, 5, 12.5, 31.25, and 78.125.

Every time you plug in the numbers, make sure you place them in the right spot. For instance, 5⋅2.5^x is the equation; all you have to do is put the x values in the x spot to get the answer.

The next value 5⋅2.5^(0) equals to 5. If the answers come out the same as the graph; it means its correct.

The other answers are NOT correct because the answer is not the same as the y values.

I want to make this as simple as possible so let me break it down. F(x) is just telling you to plug the equation in. The graph is telling you what numbers to plug in and what the answer should be. The x value is going to be the number you plug in. You just need to put it in the (x) spot (where ever it says (x) that's where you need to plug it in.) The y value is what your answer should be, if it is not your answer, that means it's not correct. An easy way to get the answers is by going through the answer choses and plugging them in as that. So what I did was take the equation f(x)=5⋅2.5^x and plug it in as that. Yes, I did go through all the other ones like f(x)= 2.5^x, but it was way easier to do. Just make sure you check through them all, so you don't mess up.

The equation that represents the table will be y = 5(2.5)ˣ. Then the correct option is C.

Let a be the initial value and x be the power of the exponent function and b be the increasing factor.

The exponent is given as,

y = a(b)ˣ

At x = 0, the value of 'y' is 5. Then we have

5 = a(b)⁰

a = 5

At x = 1, the value of 'y' is 12.5. Then we have

12.5 = 5(b)¹

b = 12.5 / 5

b = 2.5

Thus, the equation that represents the table will be y = 5(2.5)ˣ. Then the correct option is C.

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The class() function will return the class or data type of the object a.

To use the accessor $ to extract the state abbreviations and assign them to an object a, we need to know the specific context or data structure involved. The $ accessor is commonly used in programming languages like R and jQuery to access specific elements or properties within an object or data frame.

Assuming we have an object or data frame containing state abbreviations, we can use the $ accessor in R as follows:

a <- object$state_abbreviations

Here, "object" refers to the name of the object or data frame containing the state abbreviations, and "state_abbreviations" represents the specific column or property that holds the state abbreviations.

Regarding the class of the object a, we can determine it by using the class() function in R:

class(a)

The class() function will return the class or data type of the object a.

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Step-by-step explanation:

y = 5x - 3 is in slope-intercept form.

The slope of this given line is 5,

=> Parallel line will also have slope 5.

We have y = 5x + c, where c is a constant.

When x = 4, y = 7.

=> (7) = 5(4) + c, c = -13.

Therefore the answer is y = 5x - 13.

The probability of x taking on a value between 75 to 90 is 0.25.

Given that x is a continuous random variable uniformly distributed between 65 and 85.To find the probability that x lies between 75 and 90, we need to find the area under the curve between the values 75 and 85, and add to that the area under the curve between 85 and 90.

The curve represents a rectangular shape, the height of which is the maximum probability. So, the height is given by the formula height of the curve = 1/ (b-a) = 1/ (85-65) = 1/20.Area under the curve between 75 and 85 is = (85-75) * (1/20) = (10/20) = 0.5Area under the curve between 85 and 90 is = (90-85) * (1/20) = (5/20) = 0.25.

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Answer:353.4

Step-by-step explanation: V= 3.14 R2 H so  3.14 x 32 (2 is squared) x 12.5 = 353.42917

round to the nearest 10th which is 353.4