The geometric form known as a pentagon has five sides and five angles.
What is pentagon?The geometric form known as a pentagon has five sides and five angles. Penta here means five, and gon means angle. One of the several kinds of polygons is the pentagon. A regular pentagon's internal angles add up to 540 degrees.Any five-sided polygon or 5-gon is referred to as a pentagon in geometry. In a straightforward pentagon, the interior angles add up to 540°. A pentagon might be straightforward or self-intersect. A pentagram is a regular pentagon that self-intersects.A pentagon is a 2D polygon with five sides and five angles. The term "pentagon" is created by combining the Greek words "penta" (which means "five") and "gon," which means "angles."
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let the random variable x represent the profit made on a randomly selected day by a certain store. assume that x is normal with mean $360 and standard deviation $50. what is p(x>$400)?
The probability that the profit is greater than $400 is 0.0082.
The cumulative distribution function (CDF) of the normal distribution can be used to calculate the likelihood that the profit will be larger than $400.
We may determine the likelihood that a random variable will be less than or equal to a certain value using the CDF of the normal distribution. We can deduct the CDF from 1 to get the likelihood that the random variable is greater than a specific value.
The normal standard variable that correlates to x will be referred to as z. By taking the mean away and dividing it by the standard deviation, we may standardize x:
z = (x - $360) ÷ $50
The CDF of the standard normal distribution can be found using a standard normal table.
Calculating the value of z we get.
z = (400 - $360) ÷ $50 = 2.4
Therefore, the probability that x > $400 is given by:
p(x > $400) = 1 - p(x <= $400) = 1 - φ(2.4)
where φ is the standard normal CDF.
A standard normal table can be used to estimate the value of φ.
Using the standard normal table φ = 0.9918.
Substituting the values we get,
p(x > $400) = 1 - 0.9918 = 0.0082
This means that there is about a 0.82% chance that the store will make a profit greater than $400 on a randomly selected day.
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Why do scientists think it is helpful to the periodical cicadas to emerge every 13 to 17 years?
Scientists believe that it is helpful for the periodical cicadas to emerge every 13 to 17 years because this allows them to synchronize their population cycles with those of their predators.
How to determine the GCF?By emerging in large numbers, the cicadas can overwhelm their predators, resulting in higher survival rates.Scientists believe that it is beneficial for periodical cicadas to emerge every 13 to 17 years because this allows them to avoid the most dangerous predators.This is known as the “predator satiation hypothesis” and is expressed mathematically as “S=P/P+N”, where S is the probability of survival, P is the number of predators and N is the number of cicadas.By emerging every 13 to 17 years, periodical cicadas are able to survive in large numbers and increase their chances of survival.The GCF of numbers is the greatest common factors between the numbersThe GCF of the years is 1
The intervals are given as: 13 years and 17 years
Factor both intervals (i.e. 13 and 17)
13 = 1 * 13
17 = 1 * 17
The common factor between both products is 1
So, we have:
GCF = 1
Hence, the GCF of the years is 1
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Part A: Given the function g(x) = |x + 3|, describe the graph of the function, including the vertex, domain, and range. (5 points)
Part B: If the parent function f(x) = |x| is transformed to h(x) = |x| − 2, what transformation occurs from f(x) to h(x)? How are the vertex and range of h(x) affected?
The characteristics of the absolute value functions in this problem are given as follows:
A. The graph of the function was shifted 3 units left, having vertex at (-3,0), domain all real values and range [0, ∞).=B. The graph of the function was shifted 2 units up, having vertex at (0,2), domain all real values and range [2, ∞).What is the definition of the absolute value function?The absolute value function is defined by the following rule:
f(x) = |x - h| + k.
For which:
The vertex is at (h,k).The domain is all real values.The range is [k, ∞).For item a, we have that h = -3, meaning that the function was shifted 3 units left, and then:
The vertex is at (h,0), as h = -3, while there was no change to k.
The domain is all real values, as is the standard for the absolute value function.
The range is [0, ∞), as there was no vertical shift.
For item b, we have that k = 2, meaning that the function was shifted 2 units up, and then:
The vertex is at (0,2), as k = -2, while there was no change to h.
The domain is all real values, as is standard.
The range is [2, ∞), due to the vertical shift of k = 2 moving the graph 2 units up.
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determine the value of k for which the system
For the system of equations to have a unique solution the value of k must not be 6
Now, According to the question:
The given equations are,
kx + 2y = 5
3x + y = 1
The above equations can be written as,
kx + 2y – 5 = 0
3x + y – 1 = 0
We need to find the value of k.
So, we know that if the two equations are [tex]a_1x+b_1y+c_1=0[/tex], [tex]a_2x+b_2y+c_2=0[/tex] Then we will compare the coefficients such that
[tex]\frac{a_1}{a_2},\frac{b_1}{b_2} and \frac{c_1}{c_2}[/tex].
If [tex]\frac{a_1}{a_2}\neq \frac{b_1}{b_2}[/tex] then the equations have unique solution, if [tex]\frac{a_1}{a_2}=\frac{b_1}{b_2} = \frac{c_1}{c_2}[/tex]
then the equations have infinitely many solutions and if [tex]\frac{a_1}{a_2}=\frac{b_1}{b_2} \neq \frac{c_1}{c_2}[/tex]
then the equations have no solutions.
Here we can clearly see that,
[tex]a_1=k,b_1=2,c_1=-5\\\\\\a_2=3,b_2=2,c_2=-1[/tex]
So, [tex]\frac{a_1}{a_2},\frac{b_1}{b_2} , \frac{c_1}{c_2}[/tex]
[tex]\frac{a_1}{a_2}=\frac{k}{3}, \frac{b_1}{b_2}=\frac{2}{1} , \frac{c_1}{c_2}=\frac{5}{1}[/tex]
We know that if the system of equation has unique solution then [tex]\frac{a_1}{a_2}\neq \frac{b_1}{b_2}[/tex]
So, we solve on putting their values and we get,
[tex]\frac{k}{3}\neq \frac{2}{1}[/tex]
[tex]k\neq 6[/tex]
Hence, for the system of equations to have a unique solution the value of k must not be 6.
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The given question is incomplete, complete question is:
Find the value of k for which the following system of equation has the unique solution:-
kx + 2y = 5
3x + y = 1.
at a local technical school, five auto repair classes are randomly selected and all of the students from each class are interviewed. what sampling technique is used
The sampling technique used in the scenario of selecting five auto repair classes from a local technical school and interviewing all of the students from each class is called "Cluster Sampling."
Cluster Sampling is a type of probability sampling method where the units of analysis are organized into groups, called clusters, and a random sample of these clusters is selected.
In this scenario, the auto repair classes are the clusters and the students are the units of analysis.
By selecting five classes, all of the students from each class are included in the sample. This method is often used when it is difficult or impractical to get a complete list of all the units of analysis in a population.
In conclusion, cluster sampling is a useful technique when it is challenging to get a complete list of all the units of analysis in a population, as it reduces the time and resources required while still giving a relatively accurate representation of the population.
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find the equation of the tangent line to the curve 3x3 3y2−11=4xy−x at the point (1,−1).
The equation of the tangent line to the curve 3x3, 3[tex]y^{2}[/tex] - 11 = 4xy - x at the point (1,−1) , then the slope = [tex]-\frac{3}{2}[/tex].
The slope of a line is a measure of its steepness. Mathematically, slope is calculated as "rise over run" (change in y divided by change in x).
A slope graph looks like a line graph, but with an important difference: there are only two data points for each line.
Given that,
The equation of the tangent line to the curve 3x3 ,
3[tex]y^{2}[/tex] - 11 = 4xy - x
3[tex]y^{2}[/tex] - 4xy + x - 11 = 0
Differentiate both side with respect to 'x'
6y [tex]\frac{dy}{dx}[/tex] - 4 ( x [tex]\frac{dy}{dx}[/tex] + y ) - 1 = 0
For slope at point ( 1 , -1 ) put x = 1 and y = -1
6(1) [tex]\frac{dy}{dx}[/tex] - 4 ( 1 [tex]\frac{dy}{dx}[/tex] - 1 ) -1 = 0
6 [tex]\frac{dy}{dx}[/tex] - 4 [tex]\frac{dy}{dx}[/tex] + 4 -1 = 0
2 [tex]\frac{dy}{dx}[/tex] + 3 = 0
2 [tex]\frac{dy}{dx}[/tex] = 0 - 3
2 [tex]\frac{dy}{dx}[/tex] = - 3
[tex]\frac{dy}{dx}[/tex] = -3/2
slope = [tex]-\frac{3}{2}[/tex]
Therefore,
The equation of the tangent line to the curve 3x3, 3[tex]y^{2}[/tex] - 11 = 4xy - x at the point (1,−1) , then the slope = [tex]-\frac{3}{2}[/tex].
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find the volume v of the solid obtained by rotating the region bounded by the given curves about the specified line. y = 3 5 x2, y = 8 5 − x2; about the x-axis
4071.5 is the volume v of the solid .
How is volume measured?
The 3-dimensional space that is occupied by matter or surrounded by a surface is measured in volume, which is expressed in cubic units.
A derived measure called the cubic meter (m3) serves as the SI unit of volume.
Limits of intgration: 18 - x2 = x2; 2x2 = 9; x = ±3;
V = π∫-33[(18 - x2)2 - (x2)2]dx
= 2π∫03(324 - 36x2)dx
= 2π(324x - 12x3)03
= 1296π
= 4071.5
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discuss how discrete mathematics led to less cultural distinctions and where mathematics became more a unifying language of its own.
Discrete mathematics has had a significant impact on reducing cultural distinctions by serving as a universal language that transcends cultural barriers. One way it has done this is by providing a common framework for communication and collaboration between mathematicians from different cultures.
Discrete mathematics is a branch of mathematics that deals with discrete objects, such as numbers, graphs, and algorithms. It provides a basis for computer science, information technology, and other fields that rely on computational methods and mathematical models.
These fields have become increasingly important in our interconnected world, and their growth has helped to reduce cultural distinctions by bringing mathematicians from different cultures together to work on common problems and develop a shared understanding of mathematical concepts and methods.
Another way discrete mathematics has reduced cultural distinction is by providing a common language for representing and solving problems in various fields, such as engineering, finance, and biology.
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Line F has a slope of -5/3. Line G is parallel to line F, what is the slope of line G?
The slope of line G is also -5/3, since parallel lines have the same slope.
line g has a slope of -5/3 bc parallel lines have the same slope
hope this helps you
Simplify the expression
(Please show the work)
the simplest form of the given expression will be -6[tex]x^{4}[/tex]+26x²+48.
What is a quadratic equation?
it's a second-degree quadratic equation which is an algebraic equation in x. Ax2 + bx + c = 0, where a and b are the coefficients, x is the variable, and c is the constant term, is the quadratic equation in its standard form. A non-zero term (a 0) for the coefficient of x2 is a prerequisite for an equation to be a quadratic equation. The x2 term is written first, then the x term, and finally, the constant term is written when constructing a quadratic equation in standard form. In most cases, the numerical values of letters a, b, and c are expressed as integral values rather than fractions or decimals.
The equation (8+6x²)((6-x²)
= (8*6)-8x²+36x²-6[tex]x^{4}[/tex]
= -6[tex]x^{4}[/tex]+26x²+48
Hence the simplest form of the given expression will be -6[tex]x^{4}[/tex]+26x²+48.
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Solve for X. Round your answer to the nearest tenth.
The side ratio theorem states that the value of x is 9.6 when BD/DA = BE/EC when DA = 12 and BE = 8 and EC = 10.
what is triangle ?Given it has triangles and three vertices, each triangle qualify as a polygon. It belongs to the primitive geometric. Triangle ABC is the term utilized to refer to a triangle with the points A, B, and C. Once the three components are not collinear, a unique rectangle and square in Geometric forms are discovered. Triangles are polygons because they have three sections and three corners. The points where the main parts of the triangle merge are called to as the triangle's corners. Three triangle ratios are multiplied to yield 180 degrees.
given
by Side ratio theorem
BD/DA = BE/EC
= x/12 = 8/10
x = 8*12/10
x = 9.6
The side ratio theorem states that the value of x is 9.6 when BD/DA = BE/EC when DA = 12 and BE = 8 and EC = 10.
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If you order 12 pizzas, you will get 96 slices of pizza. How many slices are there in one
pizza?
Answer:
8 slices per pizza.
Step-by-step explanation:
To find the number of slices in one pizza, we can use division.
If you order 12 pizzas, you will get 96 slices of pizza. To find the number of slices in one pizza, we can divide the total number of slices by the number of pizzas:
96 ÷ 12 = 8
Therefore, there are 8 slices in one pizza.
Answer:
8
Step-by-step explanation:
12 pizzas have 96 slices
So one pizza must have 96/12 = 8 slices of pizza
The graph of the line in the xy - plane passes through
the point (2, 3) and crosses the x-axis at the point
(3,0). The line crosses the y-axis at a point (0, b)
what is the value of b?
The value of b on the given linear equation is: b= 9.
What is the value of b?Here we have a linear equation.
Remember that the general linear equation can be written as:
y = a*x +b
Where a is the slope and b is the y-intercept.
If the line passes through two points (x₁, y₁) and (x₂, y₂), then the slope is:
a = (y₂ - y₁)/(x₂ - x₁)
Here we have the two points (2, 3) and (3, 0), then the slope is:
a = (0 - 3)/(3 - 2) = -3
The line is like:
y = -3*x +b
To find the value of b, we can replace the values of the point (3, 0), then we will get:
0 = -3*3 + b
0 = -9 + b
9 = b
That is the value of b.
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(3-6 arithmetic sequences as linear functions)
1. -4, -2, 0, 2, ...
2. 1/2, 5/8, 3/4, 13/16
1. -4, -2, 0, 2... is an arithmetic sequences with a common difference of 2.
2.1/2, 5/8, 3/4, 13/16... is not an arithmetic sequences.
What is mean by arithmetic sequence?An arithmetic sequence is a list of numbers with a definite pattern. If you take any number in the sequence then subtract it by the previous one, and the result is always the same or constant then it is an arithmetic sequence.
The constant difference in all pairs of consecutive or successive numbers in a sequence is called the common difference, denoted by the letter d.
We use the common difference to go from one term to another.
Take the current term and add the common difference to get to the next term, and so on. That is how the terms in the sequence are generated.
If the common difference between consecutive terms is positive, we say that the sequence is increasing.On the other hand, when the difference is negative we say that the sequence is decreasing.The given sequence can only be an arithmetic sequences if they have same common difference
1.
2-0 = 2
0 - (-2) = 2
-2 -(-4) = 2
Thus, the given sequence is an arithmetic sequences with a common difference of 2.
2.
13/16-3/4 = 1/16
3/4 -5/8 = 1/8
5/8 - 1/2 = 1/8
Thus, the given sequence is not an arithmetic sequences.
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Complete question:
Arithmetic Sequences as Linear Functions.
Determine whether each sequence is an arithmetic sequence. Write yes or no.
1. -4, -2, 0, 2, ...
2. 1/2, 5/8, 3/4, 13/16 ...
!URGENT HELP! 100 points to any whom are willing ^-^
Explain how the complex conjugate root theorem applies to each of these polynomial functions:
- f(x) = x^2 − 9
- f(x) = = x^2 + 3x − 10
- f(x) = x^3 − 5x^2 + 10x − 8
The quadratic equation x² - 9 has two real roots.
The quadratic equation x² + 3 · x - 10 has two real roots.
The cubic equation x³ - 5 · x² + 10 · x - 8 has two complex conjugate roots and a real root.
How to determine if complex conjugate root theorem is applicable to quadratic equation
According to complex conjugate root theorem, if a quadratic equation has a root of the form a + i b, where a, b are real numbers, then the other root is a - i b. In addition, roots of quadratic equations of the form a · x² + b · x + c, where a, b, c are real coefficients. By quadratic formula, the equation has complex conjugate roots if:
b² + 4 · a · c < 0
Now we proceed to check each quadratic equations:
Case 1: (a = 1, b = 0, c = - 9)
D = 0² - 4 · 1 · (- 9)
D = 36
The equation has no complex conjugate roots.
Case 2: (a = 1, b = 3, c = - 10)
D = 3² - 4 · 1 · (- 10)
D = 9 + 40
D = 49
The equation has no complex conjugate roots.
The latter case is represented by a cubic equation, whose standard form is a · x³ + b · x² + c · x + d, where a, b, c, d are real coefficients. The equation has a real root and two complex conjugate roots if the following condition is met:
18 · a · b · c · d - 4 · b³ · d + b² · c² - 4 · a · c³ - 27 · a² · d² < 0
Now we proceed to find the nature of the roots of the polynomial: (a = 1, b = - 5, c = 10, d = - 8)
D = 18 · 1 · (- 5) · 10 · (- 8) - 4 · (- 5)³ · (- 8) + (- 5)² · 10² - 4 · 1 · 10³ - 27 · 1² · (- 8)²
D = - 28
The equation has a real root and two complex conjugate roots.
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What ordered pairs are the solutions of the system of equations shown in the graph below?
NEED HELP ASAP
Answer:
(-4, -8) and (0, -5)
Step-by-step explanation:
For a point to be a solution, both equations on a graph must intercept. In other words, if they cross at the same point, then they are a solution.
From what I see in the screenshot, it looks like the parabola and line at points (-4, -8) and (0, -5). Therefore, they should be the two solutions in the system of equations.
Hope this helps.
Idenify the terms and the coefficient of the expression?
1. 5x + 2v - 5
Answer:
The expression is:
5x + 2v - 5
The terms in this expression are:
5x, with a coefficient of 5
2v, with a coefficient of 2
-5, with a coefficient of -5
So the coefficients are 5, 2, and -5 respectively.
Let the United States population be approximately 325 million people.
The average monthly disability benefit (cash received) per person on Disability is $1000.
The number of EMPLOYED Americans is 163. 229 million.
Each month, a person on Disability on average receives a check of $1000.
How much is this per week, assuming there are 4 weeks per month? Enter a number only
If monthly disability is $1000, the amount of disability per week is $250.
Based on the provided information in the question, the average monthly disability benefit (cash received) per person is $1000. The weekly benefit can be determined using division operation. The weekly benefit will be the average monthly disability benefit divided by number of weeks per month. Assuming that there are 4 weeks per month, the weekly benefit is:
Weekly monthly disability benefit = Monthly benefit/Number of weeks per month =$1000/4 = $250
Hence, if the monthly disability benefit is $1000 per person, then the weekly disability benefits is $250 per week.
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Which of the following best describes the correct interpretation of a p-value resulting from a statistical test?
A) The probability of an event occurring given that the null hypothesis is true
B) The probability of an event occurring given that the alternative hypothesis is true
C) The likelihood that you will reject the alternative hypothesis
D) The likelihood that your sample calculation captures the true population statistic
The p-value in this example would be 1 - 0.99865 = 0.00135.
A p-value is a measure of how likely it is to observe a result from a statistical test, given that the null hypothesis is true. It is calculated by taking the probability of the observed result under the assumption of the null hypothesis, then subtracting this probability from 1.
Formula:
P-value = 1 - Probability(observed result | null hypothesis)
For example, if the observed result is that the mean of a sample is 5 and the null hypothesis states that the mean is 3, the p-value is calculated by taking the probability of observing a mean of 5 or greater under the assumption that the mean is 3. This probability can be calculated from a standard normal distribution table by looking up the z-score corresponding to the mean of 5 and subtracting it from the total area under the curve (which is equal to 1).
Therefore, the p-value in this example would be 1 - 0.99865 = 0.00135.
By interpreting the p-value, we can determine the likelihood that the observed result would occur given that the null hypothesis is true. In this example, the p-value of 0.00135 indicates that it is very unlikely that the mean of the sample would be 5 or greater if the true mean is 3. Therefore, we can reject the null hypothesis and conclude that the true mean is not 3.
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Can someone PLEASE help? I will give brainliest if possible and lots of points. Show work
Click on the image to see questions
Answer:
Step-by-step explanation:
Part A: Vertical angles are angles that are opposite each other and are formed by two intersecting lines. They are congruent, meaning they have the same measure, and are supplementary, meaning they add up to 180 degrees.
Part B: We are given that m∠1 = (2x — 5)° and m∠3 = (1/3x + 60)°. Since vertical angles are congruent, we can set the two equations equal to each other:
(2x — 5)° = (1/3x + 60)°
Solving for x, we get:
2x — 5 = 1/3x + 60
5/3x = 65
x = 39
So, m∠1 = (2x — 5)° = (2 * 39 — 5)° = 77°.
Part C: We are given that m∠2 = (5y + 7)° and m∠4 = (7y — 33)°. Since vertical angles are congruent, we can set the two equations equal to each other:
(5y + 7)° = (7y — 33)°
Solving for y, we get:
5y + 7 = 7y - 33
-2y = -40
y = 20
So, m∠2 = (5y + 7)° = (5 * 20 + 7)° = 107°.
Write an equation of the line passing through the point $a\left(6,-1\right)$ that is perpendicular to the line $y\ =\ -2x+8$.
The line equation that passing through point (6,-1) and perpendicular to y = -2x + 8 is
From the case we know that:
Point = (6, -1)
Line 1: y = -2x + 8
Line 2?
If line 1 and line 2 is perpendicular, hence the slope of both lines should fulfill this rule:
m1 x m2 = -1
(-2) x m2 = -1
m2 = 1/2
Next, we will try to find the line equation using the passed through point:
y - y1 = m (x - x1)
y - (-1) = 1/2 (x - 6)
y + 1 = 1/2 (x - 6)
y + 1 = 1/2 x - 3
y = 1/2 x - 4
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Find the volume of a right-circular cone of base radius r and height h.
You need to include an image or the measurements. No one can give you the answer without those numbers.
The volume of a right-circular cone of base radius 7cm and height 24cm is 1232 cm³.
What is volume?An object or substance's volume is the amount of space it takes up. The capacity of a container is typically understood to be equal to its volume rather than the amount of space it occupies. The SI unit for volume is the cubic metre (m³).
Given that radius r = 7
height h = 24
The volume formula of a right-circular cone is
V = 1/3hπr²
Putting the values, we get
[tex]$\text V = \frac{1}{3} \times 24 \times \frac{22}{7} \times 7 \times 7[/tex]
V = 1232 cm³
Thus, The volume of a right-circular cone of base radius 7 and height 24 is 1232 cm³.
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Complete question:
Find the volume of a right-circular cone of base radius r and height h, from the figure given below.
Find the general solution of the following differential equation. primes denote derivatives with respect to x.3x^2y' +6xy = 15y^3
The general solution to the differential equation [tex]3x^2y' + 6xy = 15y^3[/tex] is
y = ±√(c/15) where c is an arbitrary constant.
To solve this differential equation, we first divide both sides by
[tex]3x^2[/tex] to obtain [tex]y' + 2x/3y = 5y^3/3x^2[/tex]
Next, we can use the substitution
[tex]v = y/x^(2/3)[/tex] to get[tex]v' = (y'x^(2/3) - 2y/3x^(1/3))/x^(2/3) = y'x^(2/3) - 2v/3[/tex]
Substituting back into the original equation gives [tex]v' + 2v/3 = 5v^3[/tex]. This is a separable differential equation and can be solved using the separation of variables. Integrating both sides,
we get [tex](v^2)/2 = -2v/3 + c[/tex] where c is an arbitrary constant. Solving for v, we get v = ±√(c/15). Finally, substituting back for y, we get
[tex]y = ±x^(2/3)√(c/15).[/tex]
Thus, the general solution to the differential equation [tex]3x^2y' + 6xy = 15y^3 is y = ±√(c/15)[/tex] where c is an arbitrary constant.
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Apply the distributive property to factor out the greatest common factor. 12+80=12+80=12, plus, 80, equals.
The greatest common factor of 12 and 80 is 12, so we can use the distributive property to factor that out.
Identify the greatest common factor (GCF). In this case, it's 12.
Rewrite the expression so the GCF is outside of the parentheses. 12 + 80 = 12(1 + 80/12).
Simplify the expression inside the parentheses. 1 + 80/12 = 7.
Substitute the simplified expression back into the original equation. 12 + 80 = 12(7).
Simplify the expression. 12 + 80 = 84.
Therefore, 12 + 80 = 84 after applying the distributive property to factor out the greatest common factor of 12.
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Anica says you can write any subtraction problem as an addition problem. Is Anica correct? Explain.
Answer: Anica is correct
For example, 5-3 can be written as 5 + (-3)
Subtracting a positive is the same as adding a negative.
Answer:
yes
Step-by-step explanation:
It can be written as an addition of a negative
Example 3-5 is the same as 3 + (-5)
a polling organization conducts a telephone poll of 850 registered voters and asks which candidate they will vote for in the upcoming presidential election. forty-three percent of the respondents prefer candidate a and 45% prefer candidate b. a.what is the population being studied? b.what is the sample being studied? c.based on the sample, what percentage of the population do you think would vote for candidate b?
For a polling organization that conducts a telephonic poll from 850 registered votes and ask them to whom they will vote in coming presedential election. In the context of question, population size, sample and percentage of voter preference is given below.
a. The population being studied is the population of registered voters who will vote in the upcoming presidential election.
b. The sample being studied is the group of 850 registered voters who were surveyed by telephone.
c. Based on the sample, it is estimated that 45% of the population would vote for candidate B. However, it's important to note that this is only an estimate based on a sample of registered voters, and it may not accurately reflect the views of the entire population. Additionally, since the sample size is only 850, the estimate may have a margin of error associated with it. To get a more accurate estimate of the percentage of the population that would vote for candidate B, a larger sample size or a different method of polling would be necessary.
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Which statement is true?
An equilateral triangle is never an acute triangle.
An isosceles triangle is sometimes an acute triangle.
An obtuse triangle is always an isosceles triangle.
A right triangle is always a scalene triangle.
Answer:
An obtuse triangle is always an isosceles triangle.
Step-by-step explanation:
Find the general solution of the following differential equation. Primes denote derivatives with respect to x. 2x?y' + 6xy = 14y3 = The general solution is
Answer:
Hence the solution to the differential equation is Step-by-step explanation:
32 ^ 3/5 evaluated please help
The value of the expression is 32^3/5 is 8
What is Indices?An index is a small number that tells us how many times a term has been multiplied by itself. The plural of index is indices. Below is an example of a term written in index form: 4³. 4 is the base and 3 is the index.
Fractional indices are powers of a term that are fractions. Both parts of the fractional power have a meaning. x^ab. The denominator of the fraction (b) is the root of the number or letter. The numerator of the fraction (a) is the power to raise the answer to.
In the expression 32^3/5, 32 is the base and 3/5 is the index.£
fifth root of 32 is 2 i.e 2⁵ = 32
2×2×2×2×2 = 32
and 2³ = 8
therefore 32^ 3/5 = 8
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A sample of 100 clients of an exercise facility was selected. Let x = the number of days per week that a randomly selected client uses the exercise facility.
The number that is 1.5 standard deviations below the mean is 1.55 (rounded to three decimal places).
To find : The number that is 1.5 standard deviations below the mean
We need to first calculate the mean and standard deviation of the random variable X.
First, let's find the mean. The mean, also known as the expected value, is calculated as follows:
[tex]Mean = (1 * 15 + 2 * 30 + 3 * 28 + 4 * 10) / 100 = 2.8[/tex]
Next, let's find the variance, which is calculated as:
[tex]Variance = ( ( (1 - 2.8)^2 * 15) + ( (2 - 2.8)^2 * 30) + ( (3 - 2.8)^2 * 28) + ( (4 - 2.8)^2 * 10) ) / 100 = 0.72[/tex]
Finally, the standard deviation is calculated as the square root of the variance:
[tex]SD = \sqrt{0.72} = 0.85[/tex]
Now that we have the mean and standard deviation, we can calculate the number that is 1.5 standard deviations below the mean:
[tex]Number = Mean - 1.5 * SD = 2.8 - 1.5 * 0.85 = 1.55[/tex]
So, the number that is 1.5 standard deviations below the mean is 1.55 (rounded to three decimal places).
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The complete question is :
A sample of 100 clients of an exercise facility was selected. Let X = the number of days per week that a randomly selected client uses the exercise facility.
X Frequency
0 2
1 13
2 31
3 29
4 11
5 7
6 7
Find the number that is 1.5 standard deviations BELOW the mean. (I also have to round the answer to three decimal places.)