Mavis is interested in whether military dependency is related to gender in american samoa. Here is data she collected about the population of american samoa in 201020102010:.

Answers

Answer 1

Mavis is interested in whether military dependency is related to gender in american samoa. then Male = 0.4193 and Female = 0.5087

What does distribution mean in work?

Distribution is the activity of both selling and delivering products and services from manufacturer to customer. This can also be called product distribution. As businesses become more global it becomes important to improve distribution to ensure that customers and all members of the distribution channel are happy.

To obtain the marginal distribution of gender :

Total number of civilians (male + female)

(26393 + 27330) = 53,723

Male :

P(male) = number of male / total

P(male) = 26393 / 53,723 = 0.4912793

P(Female) = number of Female / total

P(Female) = 27330 / 53,723 = 0.5087206

Complete question :

Mavis is interested in whether military dependency is related to gender in American Samoa. Here is data she collected about the population of American Samoa in 2010.

Millitary status _________ female ____ Male

In armed forces _________ 28 _______ 59

Millitary dependent ______ 928 ______ 781

Civilian _______________ 26393 ___27330

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Related Questions

Is a square root always an irrational number?

Answers

No, a square root is not always an irrational number because the perfect square roots are rational number.

What is an irrational number?

Any real number that cannot be written as p/q, where p and q are both integers, the quotient of two integers.

If a number is not a perfect square, the square root of that number is not rational.

For example, the square root is 4 is 2.

The square root of 9 is 3.

But whereas the square root of 5 is 2.23606797755555...... which is irrational

The square root of 8 is 2.8284271247555..... which is irrational.

So, therefore square root of a number is not irrational always it can be rational also.

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Find AC, if possible. A= C= Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. AC= (Simplify your answer.) B. The matrix AC is not defined.

Answers

The multiplication of the given two matrices AC will be [tex]\left[\begin{array}{ccc}-15&12&17\\5&-9&1\end{array}\right][/tex].

What is a matrix?

matrix, a collection of numbers lined up in rows and columns to produce a rectangular array. The elements of the matrix, also known as the entry, are the numerals.

In another word, a matrix is a set of variables that are arranged in such a good way that we can create an algebraic equation from that.

As per the given matrices,

A = [tex]\left[\begin{array}{ccc}2&-1&3\\0&2&-1\end{array}\right][/tex]

C = [tex]\left[\begin{array}{ccc}-5&0&5\\2&-3&2\\-1&3&3\end{array}\right][/tex]

The number of columns in matrix A is the same as the number of rows in matrix C.

The multiplication will be as,

AC = [tex]\left[\begin{array}{ccc}2&-1&3\\0&2&-1\end{array}\right]\times\left[\begin{array}{ccc}-5&0&5\\2&-3&2\\-1&3&3\end{array}\right][/tex]

AC = [tex]\left[\begin{array}{ccc}(2(-5)-1(2)+3(-1)&(0+-1(-3)+3(3))&2(5)+-1(2)+3(3)\\(0+2(2)+(-1(-1))&(0+2(-3)+-1(3)&2(5)+0+2(2)+-1(3)\end{array}\right][/tex]

AC = [tex]\left[\begin{array}{ccc}-15&12&17\\5&-9&1\end{array}\right][/tex]

Hence "The multiplication of the given two matrices AC will be [tex]\left[\begin{array}{ccc}-15&12&17\\5&-9&1\end{array}\right][/tex]".

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How do you teach factors to Grade 5?

Answers

Prime factorization is the process of expressing a number as the sum of all its prime factors. In prime factorization, each and every integer is a prime number.

What is factorization?

It is a method for dividing a polynomial into pieces that will be multiplied together. At this moment, the polynomial's value will be zero.

A component is a number that completely divides another number. To put it another way, if adding two whole numbers results in a product, then the numbers we are adding are factors of the final since the product is divisible by them.

Factors can be found using either division or multiplication. Rules of divisibility can also be used.

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find the gradient vector field of f. f(x, y, z) = 6 x2 + y2 + z2

Answers

The gradient of the vector field of function f(x, y, z) is (12x,2y,2z)

The term gradient of the vector in math is calculated as the vector whose components are given by the partial derivatives of the function and it can be evaluated at any given point, and the gradient represents the direction and magnitude of greatest increase of the function at that point.

Here we have given the function f(x, y, z) = 6x² + y² + z²

Now we have to calculate the gradient of the function by using the following step.

In the given question, we have identified the values of the following as,

=> x = 6x²

=> y = y²

=> z = z²

Now, in order to find the gradient of a function (which is a vector), differentiate the function with respect to each variable.

=> ∇f=(∂f/∂x, ∂f/∂y, ∂f/∂z)

Now, the value of

=> ∂f/∂x = 12x

=> ∂f/∂y = 2y

=> ∂f/∂z = 2z

Now, we have to plug in the point:

=> ∇f(x, y, z) = (12x,2y,2z)

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Which of the decimals in the problem should be represented as a negative rate? which two factors should ericka multiply to find the total variation in water level?.

Answers

The decimal that should be represented as a negative rate in this problem is the 2.2 millimeters per year because it represents a decrease in water level.

The two factors that Ericka should multiply to find the total variation in water level are the rate of change (2.2 millimeters per year) and the time period over which the change occurred (6.2 years). In other words, she should multiply 2.2 by 6.2 to find the total variation in water level.

A novel and somewhat paradoxical tool for monetary policy, negative interest rates are not common. The goal of negative interest rates is to encourage lending and spending rather than saving and hoarding. When cash is placed with a bank, it results in a storage fee rather than the chance to receive interest income. When cash is placed with a bank, it results in a storage fee rather than the chance to receive interest income.

The quantity you are measuring is said to be increasing over time if the rate of change is positive, whereas the opposite is true if the rate of change is negative.

The complete question is:-

Ericka is also in Mr. Whittaker’s science class and she recorded the variation in water level at a different part of the river. She observed that the water level there fell 2.2 millimeters per year over a period of 6.2 years This data is compared to the average annual trend, which shows the water level rising 1.8 mm/year. Which of the decimals in the problem should be represented as a negative rate? Which two factors should Ericka multiply to find the total variation in water level?

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Tickets to the baseball game are on sale for $1.50 off the regular price. Dea buys 6 tickets. If her total cost is $51, what is the regular price of each ticket? Write and solve an equation of the form p(x±q)=r. Then write a sentence to explain your answer.

Answers

Answer:

Below

Step-by-step explanation:

6 (x-1.50) = 51        6 = number of tix     x - 1.50 = sale price     x = reg price

6x - 9 = 51

6x = 60

x = 10 dollar regular price

How many solutions can we get by solving these equations 3x 2y 5 2x 3y 7?

Answers

By resolving these equations, we can arrive at one solution.

To find the number of solutions to a system of equations, you can solve the system either by graphing the equations or by using algebraic methods such as substitution or elimination.

If the equations are compatible (meaning that there is at least one combination of values for the variables that satisfies both equations), then the system has at least one solution. If the equations are independent (meaning that they are not related to each other and cannot be derived from each other), then the system has exactly two solutions. If the equations are dependent (meaning that one of the equations can be derived from the other), then the system has exactly one solution. If the equations are incompatible (meaning that there is no combination of values for the variables that can satisfy both equations), then the system has no solutions.

In this case, the equations are 3x + 2y = 5 and 2x - 3y = 7. To find the number of solutions to this system, you can either graph the equations or solve the system using algebraic methods.

Using algebraic methods, you can start by solving one of the equations for one of the variables in terms of the other:

3x + 2y = 5

2y = -3x + 5

y = (-3/2)x + (5/2)

Then, you can substitute this expression for y into the other equation to solve for x:

2x - 3((-3/2)x + (5/2)) = 7

2x + (9/2)x - (15/2) = 7

(11/2)x - (15/2) = 7

(11/2)x = (15/2) + 7

(11/2)x = (15 + 14)/2

(11/2)x = 29/2

x = 29/11

Substituting this value for x back into the first equation, you can solve for y:

3(29/11) + 2y = 5

87/11 + 2y = 5

2y = 5 - 87/11

2y = (55 - 87)/11

2y = -32/11

y = -32/22

Therefore, the solution to this system of equations is x = 29/11 and y = -32/22. Since there is only one solution, this system has exactly one solution.

The complete question is:-

How many solutions can we get by solving these equations 3x + 2y= 5;2x -3y =7?

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Can we return 3 values in Python?

Answers

You can return multiple values from a function in Python.

Now, According to the question:

Can Python function return 3 values?

You can return multiple values from a function in Python. To do so, return a data structure that contains multiple values, like a list containing the number of miles to run each week. Data structures in Python are used to store collections of data, which can be returned from functions.

How do you return 4 values in Python?

In Python, you can return multiple values by simply return them separated by commas. In Python, comma-separated values are considered tuples without parentheses, except where required by syntax. For this reason, the function in the above example returns a tuple with each value as an element.

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a+b/a-b=5/3 what are the following ratios a+b/a

Answers

The ratio for the Illustration a+b/a-b=5/3 is 5:4.

How to illustrate the ratio?

Ratio demonstrates how many times one number can fit into another number. Ratios contrast two numbers by ordinarily dividing them. A/B will be the formula if one is comparing one data point (A) to another data point (B).

From the information given, the equation is written thus:

a + b / a - b = 5 / 3

Cross multiply

5(a - b) = 3 (a + b)

5a - 5b = 3a + 3b

Collect the like terms

5a - 3a = 3b + 5b

2a = 8b

Divide

a = 8b / 2

a = 4b

Therefore (a + b) / a will be:

= (4b + b) / 4b

= 5b / 4b

= 5/4

= 5 : 4

The ratio is 5:4.

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y=-5x/6 standard form

Answers

Answer:

Step-by-step explanation:

i think its b daddy

What is the first prime number?

Answers

A prime number is a positive integer greater than one that has no positive integer divisors other than one and itself. so The first prime number is 2.

What is a prime number?

A whole number higher than one that cannot be divided exactly by any other whole number than itself and one is a prime number.

What is whole number?

Complete numbers, the range of numbers that includes zero and natural numbers and not a decimal or fraction.

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How do you find the missing number in an array without loop?

Answers

You can find the missing number in an array without loop by counting the number of elements in the array, and then looping through the elements.

How do you find the missing number in an array without loop?

Here is a simple program to find the missing numbers in an integer array.

ArrayList<Integer> arr = new ArrayList<Integer>();

int a[] = { 1,3,4,5,6,7,10 };

int j = a[0];

for (int i=0;i<a.length;i++)

{

   if (j==a[i])

   {

       j++;

       continue;

   }

   else

   {

       arr.add(j);

       i--;

   j++;

   }

}

System.out.println("missing numbers are ");

for(int r : arr)

{

   System.out.println(" " + r);

}

You can find the missing number in an array without loop by counting the number of elements in the array, and then looping through the elements.

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. a model proposed for nba basketball supposes that when two teams with roughly the same record play each other, the number of points scored in a quarter by the home team minus the number scored by the visiting team is approximately a normal random variable with mean 1.5 and variance 6. in addition, the model supposes that the point differentials for the four quarters are independent. assume the model is correct. (a) what is the probability the home team wins? (b) what is the conditional probability that the home team wins, given that is is behind 5 points by the end of halftime. (c) what is the conditional probability that the home team wins, given that it is ahead by 5 points at the end of the first quarter

Answers

a) The probability the home team wins is of: 0.7291 = 72.91%.

b) The conditional probability that the home team wins, given that is is behind 5 points by the end of halftime is of: 0.3409 = 34.09%.

c) The conditional probability that the home team wins, given that it is ahead by 5 points at the end of the first quarter is of: 0.9015 = 90.15%.

How to obtain probabilities using the normal distribution?

The z-score of a measure X of a variable that has mean symbolized by [tex]\mu[/tex] and standard deviation symbolized by [tex]\sigma[/tex] is obtained by the rule presented as follows:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

The z-score represents how many standard deviations the measure X is above or below the mean of the distribution, depending if the obtained z-score is positive or negative.Using the z-score table, the p-value associated with the calculated z-score is found, and it represents the percentile of the measure X in the distribution.

The mean and the standard deviation for each quarter are given as follows:

Mean: 1.5.Standard deviation: square root of 6 = 2.45.

Hence for each case, the mean and the standard deviation are given as follows:

Entire game -> Four quarters -> [tex]\mu = 6, \sigma = 9.8[/tex]After halftime -> Two quarters -> [tex]\mu = 3, \sigma = 4.9[/tex]After the first quarter -> Three quarters -> [tex]\mu = 4.5, \sigma = 7.35[/tex]

The probability of the home team winning is the probability of X being greater than zero for four quarters, hence it is one subtracted by the p-value of Z when X = 0, hence:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

Z = (0 - 6)/9.8

Z = -0.61

Z = -0.61 has a p-value of 0.2709.

1 - 0.2709 = 0.7291 = 72.91%.

When the home team is down five points at the end of the halftime, the probability of winning is P(X > 5) for two quarters, hence one subtracted by the p-value of Z when X = 5 as follows:

Z = (5 - 3)/4.9

Z = 0.41

Z = 0.41 has a p-value of 0.6591.

Z =  has a p-value of 0.6591.

1 - 0.6591 = 0.3409 = 34.09%.

When the home team is up five points at the end of the first quarter, the probability of winning is P(X > -5) for three quarters, hence one subtracted by the p-value of Z when X = -5.

Z = (-5 - 4.5)/7.35

Z = -1.29

Z = -1.29 has a p-value of 0.0985.

1 - 0.0985 = 0.9015 = 90.15%.

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What is the value of log2 16 log 2 16?

Answers

We determine the value of log₂16 = 4 by using logarithm laws.

What is logarithm?

Logarithm is the alternative way of representing an exponent. The power at which a number is needed to raise to get the other values is termed as logarithm.

What does mean by log₂?

It is called log base 2 or binary logarithm. It is the inverse of the power of function 2.

How do we calculate the value of log₂ 16?

We stated before that log base 2 is an inverse expression of the power 2. let N is a real positive number and x is the number of exponents. Now, logarithm form of the exponent is written as log₂ N = x

                                                                        2ˣ = N

We are given, log₂ 16

 N= 16

  log₂16 = x

    2ˣ =16

we know that 2⁴ =16

hence, x= 4

hence, log₂ 16 = 4

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How do you write a linear inequality?

Answers

Mathematical expressions known as linear inequalities compare two expressions and used the inequality symbol. The expression may be either a numerical or an algebraic expression, or it may be both.

Define the term linear inequality?

Expressions that compare two linear expressions using inequality symbols are referred to as linear inequalities.

It's important to remember that if p < q, then p must be a number that is unambiguously less than q. If p ≤ q, then p is a number that is strictly smaller than q or exactly equal to q. The same is true for the final two inequality signs > (greater than) and (greater than or equal to).

When resolving multi-step linear inequalities, we must follow the laws of inequality.

Step 1: Simplify an inequality on both sides, both the LHS and the RHS.Step 2: If indeed the inequality is just a strict inequality, when the value is acquired, the solution for x is either less than or larger than the calculated value as stated in the question.

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Complete the statements to compare the weights of
female babies with the weights of male babies.
The median female birth weight is
median male birth weight.
The range of female birth weight is
range of male birth weight.
the
Which birth weight measure is the same for both
genders?
the
Done

Answers

The range and median birth weight are the same for both genders.

Step-by-step explanation:

The average birth weight for babies is around 7.5 lb (3.5 kg). However, a birth weight between 5.5 lb (2.5 kg) and 10 lb (4.5 kg) is considered normal. The general observations with regard to birth weight are as follows:

   Boys are usually a little heavier than girls.

   First babies are usually lighter than later siblings.

   Large parents generally have large babies, while small parents generally have small babies.

   Conditions like diabetes in the mother may lead to increased birth weight.

   Zika virus causes the birth weight to be lower and the size of the head is small.

   The range and median birth weight are the same for both genders.

What is the median if mode is 15 and 48?

Answers

Our Median will be 37 when the Mode is 15 and the Mean is 48.

Relationship between Mean Median and Mode?

An empirically established link exists between the mean, median, and mode in statistics. The average difference between the mean and the mode is three times greater than the difference between the mean and the median, according to observations of innumerable data sets. The equation for this relationship is:

Mode - Mean = 3*(Mean – Median).

on solving this we get:

Mode = 3 * Median - 2 * Mean

In our question, it is given that the Mode is 15 and the Mean is 48 and we have to calculate the Median.

Putting these values in our formula, we get:

15 = 3 * Median - 2 * 48

3 * Median = 15 + 96

Median = 111/3 = 37.

So, finally, our result will be 37.

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Which shows one way to determine the factors of x³ 12x² 2x 24 by grouping?

Answers

Therefore, the  solution of the given problem is  factors of the given equation are  [tex]x^{2}[/tex](x - 12) - 2. (x - 12).

Examine the equation.

An equation is a mathematical statement that is created by connecting two expressions using the equivalent sign. An example of an equation is 2x - 5 = 15. By resolving this equation, we may ascertain that the variable x has a value of 5.

Here,

The approach of grouping for factoring polynomials in this case is a progression from the method of identifying common factors.

In order to determine the factors of the given polynomial expression,

we are trying to find groups from the common factors in this case.

The components of [tex]x^{3}[/tex]- 12[tex]x^{2}[/tex] - 2x + 24 are hence

=> [tex]x^{2}[/tex](x - 12)  -2 (x - 12)

=> [tex]x^{2}[/tex](x - 12) - 2. (x - 12).

Therefore, the factors of the given equation are  [tex]x^{2}[/tex](x - 12) - 2. (x - 12).

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What is called histogram?

Answers

a numerical data is a histogram

A kangaroo chases a rabbit that starts 150 feet ahead of the kangaroo. for every 12-foot leap of the kangaroo, the rabbit leaps 7 feet. how many leaps would the kangaroo have to make to catch up to the rabbit?

Answers

The kangaroo must take at least 23 leaps to catch up to the rabbit.

To catch up to the rabbit, the kangaroo must travel a total distance of 150 feet. For every 12-foot leap of the kangaroo, the rabbit leaps 7 feet, so the kangaroo must take one more leap than the rabbit in order to cover the same distance.

The number of leaps the rabbit takes can be found by dividing the distance the rabbit travels (150 feet) by the distance the rabbit leaps in each jump (7 feet):

150 feet / 7 feet/leap = 21.43 leaps

Since the kangaroo must take one more leap than the rabbit, the kangaroo must take 21.43 + 1 = 22.43 leaps to catch up to the rabbit.

However, since the number of leaps must be a whole number, the kangaroo must take at least 23 leaps to catch up to the rabbit.

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The number of leaps the rabbit takes can be found by dividing the distance the rabbit travels (150 feet) by the distance the rabbit leaps in each jump (7 feet):

150 feet / 7 feet/leap = 21.43 leaps

Since the kangaroo must take one more leap than the rabbit, the kangaroo must take 21.43 + 1 = 22.43 leaps to catch up to the rabbit.

find the area of the region bounded by the given curves. y = 6x^2 ln x, y = 24 ln(x)

Answers

The area of the region bounded by the given curves is   [tex]32lnx-\frac{58}{3}[/tex]

Given curves,

y = [tex]6x^{2} lnx[/tex]

y = 24lnx

We will find the intersection points of these two curves by equating and then solving.

The intersection of these two curves will be at x = 1,2.

The area under the curves,

A = [tex]\int\limits^2_1 {(24lnx-6x^{2} lnx)} \, dx[/tex]

To solve, concentrate on the unbounded (indefinite) integral:

a = [tex]\int\limits {(24lnx-6x^{2} lnx)} \, dx[/tex]

  = [tex]-6\int\limits {(lnx)(x^{2} -4)} \, dx[/tex]

We will use integration by parts to solve this integration.

[tex]\int\limits {u} \, dv=vu-\int\limits{v} \, du[/tex]

Let us assume,

u = lnx and v = [tex]\frac{1}{3}x^{3} -4x[/tex]

Therefore,

[tex]du = \frac{1}{x}dx[/tex]

[tex]dv=x^{2}-4[/tex]

Putting the values,

a = [tex]-6[(lnx)(\frac{1}{3}x^{3}-4x) - \int\limits{(\frac{1}{x} )(\frac{1}{3}x^{3}-4x)} \, dx ][/tex]

  = [tex]-6[(lnx)(\frac{1}{3}x^{3}-4x) - (\frac{1}{9}x^{3}-4x)][/tex]

  = [tex]-6(lnx)(\frac{1}{3}x^{3}-4x) + \frac{2}{3}x^{3}-24x[/tex]

Returning to the definite integral, now

A = [tex]\int\limits^2_1 {(24lnx-6x^{2} lnx)} \, dx[/tex]

   = [tex][-6(lnx)(\frac{1}{3}x^{3}-4x) + \frac{2}{3}x^{3}-24x]^{2} _{1}[/tex]

   = [tex]-6ln2(\frac{8}{3}-8)+\frac{16}{3}-48-\frac{2}{3}+24[/tex]

   =  [tex]32lnx-\frac{58}{3}[/tex]

Hence, The area of the region bounded by the given curves is [tex]32lnx-\frac{58}{3}[/tex].

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find the exact length of the curve. y = 1 4 x2 − 1 2 ln(x), 1 ≤ x ≤ 4

Answers

The exact length of the curve of the equation y = 1/4 x² − 1/2 ln(x), 1 ≤ x ≤ 4 is 1.125

Here we have given an equation y = 1/4 x² − 1/2 ln(x) with the limit as 1 ≤ x ≤ 4.

Now, the arc length is calculated by differentiating the terms, then we get,

=> dy/dx = x/2 - 1/2x

Now, we have to apply these derivative on the arc length formula, then we get,

=> length =  [tex]\int\limits^4_1 {\sqrt{1 + (\frac{x}{2} -\frac{1}{2x})^2 } } \, dx[/tex]

When we simplify this one then we get,

=> length = [tex]\frac{1}{2} \int\limits^4_1 {\sqrt{x^2 + 2 + \frac{1}{x^2} } } \, dx[/tex]

When we further simplify this one then we get,

=> length = [tex]\frac{1}{2} \int\limits^4_1 {x + \frac{1}{x} } \, dx[/tex]

Now, the result of the differentiation is

=> length = 1/2 [17/4 - 2]

=> length = 1/2 [9/4]

=> length = 1.125

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How do you solve easy expressions?

Answers

The steps to solve expressions easily are:

N°1 : Remove parentheses brackets and bracesN°2 : Group termsN°3 : Validate the same base and exponent to operate in addition and subtraction.N°4 : Simplify

Algebraic expressions

An algebraic expression is a set of numbers and letters that make up an expression that has a meaning, the letters are variables and the numbers are coefficients or independent terms, algebraic expressions can be part of an equation and model mathematical processes.

To solve expressions we must organize:

N°1 : Eliminate parentheses, brackets and braces, with multiplication and division mathematical operations.N°2 : Group dependent terms on one side and independent on the other.N°3 : Validate the same base and exponent to operate in addition and subtraction.N°4 : Simplify

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write the equation 3x-2y=15 in standard form. show work.

Answers

we have given that

X=7

and Y=3

Step-by-step explanation:

3x-2y=15

put value

(3×7)-(2×3)=15

so we can say that the value of X and Y having different value and satisfied given given

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What property of congruence is illustrated in the statement if ∠ A ≅ ∠ B then ∠ B ≅ ∠ A?

Answers

If ∠ A ≅ ∠ B then ∠ B ≅ ∠ A serves as an example of the symmetric property of congruence.

The symmetric property of equality in mathematics is actually fairly straightforward. According to this criterion, if a = b, then b must also be a. In other words, even if two equations' sides are switched, the equation still makes sense.

According to this principle, if a = b and b = c, then a = c.

THE CHARACTERSISTICS OF CONGRUENCE:

1. REFLEXIVE PROPERTY

CONCURRENCE TO LINE SEGMENT AB IS LINE SEGMENT AB

3. SYMMETRIC PROPERTY : Angle B is congruent with angle A if and only if angle A is congruent with angle B.

3. TRANSITIVE PROPERTY: Angle A is in accordance with Angle C if Angle A is in accordance with Angle B and Angle B is in accordance with Angle C.

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Look at screenshot; I need answer you don't have to explain

Answers

In the given graph with the function, x = -9 if f(x) = 7

What is graph?

An illustration of a relation is a function graph. In set theory and modern mathematical foundations, a function is actually equal to its graph. It is often helpful to think of functions as mappings, which include the sets that constitute the domain and the codomain in addition to the relationship between input and output.

A codomain should be considered, for instance, when determining whether a function is onto (surjective) or not. The codomain is not determined by the graph of a function alone. The terms "function" and "graph of a function" are frequently used because, although they refer to the same thing, they express different viewpoints on it.

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Is it hard to learn algebra?

Answers

For solving algebra Determine the issue, Describe your knowledge, Plan beforehand, Execute the plan ,and Check to see whether the response makes sense.

What is Algebra?

One of the many different mathematical disciplines is algebra. Algebra, a common thread that runs through nearly all of mathematics, is, roughly speaking, the study of mathematical symbols and the rules for using these symbols in formulae. With the use of mathematical expressions, algebra is the area of mathematics that helps to depict situations or problems. We employ integers that have a fixed or definite value in algebra, such as 2, 7, 0.068, etc. In addition to using numbers, algebra also makes use of variables like x, y, and z.

to do algebra for beginners - Determine the issue, specify your knowledge, Plan, execute, and confirm that the solution makes sense.

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Solve the equation

22 = -13 + a

Answers

The equation 22 = -13 + a gives the value a = 35.

What is an equation?

An equation is a mathematical statement that is made up of two expressions connected by an equal sign.

Example:

2x + 4 - 8 is an equation.

We have,

22 = -13 + a

Add 13 on both sides.

22 + 13 = a

a = 35

Thus,

The value of a is 35.

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What is AAA congruence postulate?

Answers

AAA is a triangle similarity theory. Which means all the respective angles of two triangles are equal.

AAA Postulate: (Angle Angle Angle)

It states that if all three angles of a triangle are equal to all three respective angles of another triangle, then the two triangles will be similar.

Let's say the angles ABC , BCA ,CAB of a triangle ABC are equal to the sides XYZ, YZX, ZXY of triangle XYZ then we can say that according to AAA postulates both the sides are similar and as a result we can say that their respective sides will be also same.

AAA postulates sate that if the all three angles of two triangle is equal then they will be called as similar triangle.

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if a student is chosen at random, what is the probability that the student competed in rhythm given they had competed in smooth or standard.

Answers

The probability that the student competed in Rhythm given they had competed in Smooth or Standard: P(Rhythm |Smooth or Standard) or P ( A/( B or C)) is 0.6613 = 66.13%.

We have, A survey was conducted at a local ballroom dance studio asking students with three dance categories. The above Venn diagram shows the number of students in these three categories of dance.

Total number of students in all dance categories n(A or B or C) = 5 + 6 + 8 + 12 + 14 + 15 + 10 + 4

= 74

let us consider the events

A : students in Rhythm dance category

B : students in Standard dance category

C : students in Smooth dance category

Using the conditional probability,

Probability that student has competed in Rhythm and they have competed in Smooth, P(Rhythm/ smooth) = P(A/C) = P(A and C)/P(C)

= (12+14)/74 = 26/74 = 0.703

but we have to calculate probability that the student competed in Rhythm given they had competed in Smooth or Standard, P(Rhythm/Smooth or Standard) = P(Rhythm and (Smooth or Standard))/P(Smooth or Standard)

i.e., P( A/(B or C) )= P(A and (B or C))/P(B or C)

n(B or C) = n(B) + n(C) - n( B and C)

=> n(B or C) = 14 + 5 + 10 + 15 + 12 + 14 + 5 + 6 - 5 - 14 = 62

Now, P(B or C) =n(B or C)/n(A or B or C)

=> P(B or C) = 62/74 = 0.703 = 70.3%

P(A and (B or C)) = n(A and (B or C))/n(A or B or C)

n(A and (B or C)) = n(A) + n(B or C) - n(A or B or C)

= 12 + 14 + 15 + 8 + 62 - 70 +4 = 41

P(A and (B or C)) = 37/74

So, P( A/(B or C) )= P(A and (B or C))/P(B or C)

=> P( A/(B or C) )= 41/74/62/74 = 41/62

= 0.6613 = 66.13%

Hence, the required probability is 66.13%.

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Complete question:

A survey was conducted at a local ballroom dance studio asking students if they had ever competed in the following dance categories:

- Smooth

- Rhythm

- Standard

The results were then presented to the owner in the following Venn Diagram. Use the Venn Diagram to determine the following probabilities. Write your answers in percent form, rounded to the nearest tenth .If a student is chosen at random; what is the probability that the student competed in Rhythm GIVEN they had competed in Smooth or Standard: P(Rhythm |Smooth or Standard)

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